ogr_srs_api.h: Spatial Reference System C API¶
C spatial reference system services and defines.
See also: ogr_spatialref.h
Defines
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SRS_WKT_WGS84_LAT_LONG¶
WGS 84 geodetic (lat/long) WKT / EPSG:4326 with lat,long ordering.
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SRS_PT_ALBERS_CONIC_EQUAL_AREA¶
Albers_Conic_Equal_Area projection.
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SRS_PT_AZIMUTHAL_EQUIDISTANT¶
Azimuthal_Equidistant projection.
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SRS_PT_CASSINI_SOLDNER¶
Cassini_Soldner projection.
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SRS_PT_CYLINDRICAL_EQUAL_AREA¶
Cylindrical_Equal_Area projection.
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SRS_PT_BONNE¶
Cylindrical_Equal_Area projection.
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SRS_PT_ECKERT_I¶
Eckert_I projection.
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SRS_PT_ECKERT_II¶
Eckert_II projection.
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SRS_PT_ECKERT_III¶
Eckert_III projection.
-
SRS_PT_ECKERT_IV¶
Eckert_IV projection.
-
SRS_PT_ECKERT_V¶
Eckert_V projection.
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SRS_PT_ECKERT_VI¶
Eckert_VI projection.
-
SRS_PT_EQUIDISTANT_CONIC¶
Equidistant_Conic projection.
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SRS_PT_EQUIRECTANGULAR¶
Equirectangular projection.
-
SRS_PT_GALL_STEREOGRAPHIC¶
Gall_Stereographic projection.
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SRS_PT_GAUSSSCHREIBERTMERCATOR¶
Gauss_Schreiber_Transverse_Mercator projection.
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SRS_PT_GEOSTATIONARY_SATELLITE¶
Geostationary_Satellite projection.
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SRS_PT_GOODE_HOMOLOSINE¶
Goode_Homolosine projection.
-
SRS_PT_IGH¶
Interrupted_Goode_Homolosine projection.
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SRS_PT_GNOMONIC¶
Gnomonic projection.
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SRS_PT_HOTINE_OBLIQUE_MERCATOR_AZIMUTH_CENTER¶
Hotine_Oblique_Mercator_Azimuth_Center projection.
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SRS_PT_HOTINE_OBLIQUE_MERCATOR¶
Hotine_Oblique_Mercator projection.
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SRS_PT_HOTINE_OBLIQUE_MERCATOR_TWO_POINT_NATURAL_ORIGIN¶
Hotine_Oblique_Mercator_Two_Point_Natural_Origin projection.
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SRS_PT_LABORDE_OBLIQUE_MERCATOR¶
Laborde_Oblique_Mercator projection.
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SRS_PT_LAMBERT_CONFORMAL_CONIC_1SP¶
Lambert_Conformal_Conic_1SP projection.
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SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP¶
Lambert_Conformal_Conic_2SP projection.
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SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP_BELGIUM¶
Lambert_Conformal_Conic_2SP_Belgium projection.
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SRS_PT_LAMBERT_AZIMUTHAL_EQUAL_AREA¶
Lambert_Azimuthal_Equal_Area projection.
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SRS_PT_MERCATOR_1SP¶
Mercator_1SP projection.
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SRS_PT_MERCATOR_2SP¶
Mercator_2SP projection.
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SRS_PT_MERCATOR_AUXILIARY_SPHERE¶
Mercator_Auxiliary_Sphere is used used by ESRI to mean EPSG:3875.
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SRS_PT_MILLER_CYLINDRICAL¶
Miller_Cylindrical projection.
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SRS_PT_MOLLWEIDE¶
Mollweide projection.
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SRS_PT_NEW_ZEALAND_MAP_GRID¶
New_Zealand_Map_Grid projection.
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SRS_PT_OBLIQUE_STEREOGRAPHIC¶
Oblique_Stereographic projection.
-
SRS_PT_ORTHOGRAPHIC¶
Orthographic projection.
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SRS_PT_POLAR_STEREOGRAPHIC¶
Polar_Stereographic projection.
-
SRS_PT_POLYCONIC¶
Polyconic projection.
-
SRS_PT_ROBINSON¶
Robinson projection.
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SRS_PT_SINUSOIDAL¶
Sinusoidal projection.
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SRS_PT_STEREOGRAPHIC¶
Stereographic projection.
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SRS_PT_SWISS_OBLIQUE_CYLINDRICAL¶
Swiss_Oblique_Cylindrical projection.
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SRS_PT_TRANSVERSE_MERCATOR¶
Transverse_Mercator projection.
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SRS_PT_TRANSVERSE_MERCATOR_SOUTH_ORIENTED¶
Transverse_Mercator_South_Orientated projection.
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SRS_PT_TRANSVERSE_MERCATOR_MI_21¶
Transverse_Mercator_MapInfo_21 projection.
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SRS_PT_TRANSVERSE_MERCATOR_MI_22¶
Transverse_Mercator_MapInfo_22 projection.
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SRS_PT_TRANSVERSE_MERCATOR_MI_23¶
Transverse_Mercator_MapInfo_23 projection.
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SRS_PT_TRANSVERSE_MERCATOR_MI_24¶
Transverse_Mercator_MapInfo_24 projection.
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SRS_PT_TRANSVERSE_MERCATOR_MI_25¶
Transverse_Mercator_MapInfo_25 projection.
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SRS_PT_TUNISIA_MINING_GRID¶
Tunisia_Mining_Grid projection.
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SRS_PT_TWO_POINT_EQUIDISTANT¶
Two_Point_Equidistant projection.
-
SRS_PT_VANDERGRINTEN¶
VanDerGrinten projection.
-
SRS_PT_KROVAK¶
Krovak projection.
-
SRS_PT_IMW_POLYCONIC¶
International_Map_of_the_World_Polyconic projection.
-
SRS_PT_WAGNER_I¶
Wagner_I projection.
-
SRS_PT_WAGNER_II¶
Wagner_II projection.
-
SRS_PT_WAGNER_III¶
Wagner_III projection.
-
SRS_PT_WAGNER_IV¶
Wagner_IV projection.
-
SRS_PT_WAGNER_V¶
Wagner_V projection.
-
SRS_PT_WAGNER_VI¶
Wagner_VI projection.
-
SRS_PT_WAGNER_VII¶
Wagner_VII projection.
-
SRS_PT_QSC¶
Quadrilateralized_Spherical_Cube projection.
-
SRS_PT_AITOFF¶
Aitoff projection.
-
SRS_PT_WINKEL_I¶
Winkel_I projection.
-
SRS_PT_WINKEL_II¶
Winkel_II projection.
-
SRS_PT_WINKEL_TRIPEL¶
Winkel_Tripel projection.
-
SRS_PT_CRASTER_PARABOLIC¶
Craster_Parabolic projection.
-
SRS_PT_LOXIMUTHAL¶
Loximuthal projection.
-
SRS_PT_QUARTIC_AUTHALIC¶
Quartic_Authalic projection.
-
SRS_PT_SCH¶
Spherical_Cross_Track_Height projection.
-
SRS_PP_CENTRAL_MERIDIAN¶
central_meridian projection parameter
-
SRS_PP_SCALE_FACTOR¶
scale_factor projection parameter
-
SRS_PP_STANDARD_PARALLEL_1¶
standard_parallel_1 projection parameter
-
SRS_PP_STANDARD_PARALLEL_2¶
standard_parallel_2 projection parameter
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SRS_PP_PSEUDO_STD_PARALLEL_1¶
pseudo_standard_parallel_1 projection parameter
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SRS_PP_LONGITUDE_OF_CENTER¶
longitude_of_center projection parameter
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SRS_PP_LATITUDE_OF_CENTER¶
latitude_of_center projection parameter
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SRS_PP_LONGITUDE_OF_ORIGIN¶
longitude_of_origin projection parameter
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SRS_PP_LATITUDE_OF_ORIGIN¶
latitude_of_origin projection parameter
-
SRS_PP_FALSE_EASTING¶
false_easting projection parameter
-
SRS_PP_FALSE_NORTHING¶
false_northing projection parameter
-
SRS_PP_AZIMUTH¶
azimuth projection parameter
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SRS_PP_LONGITUDE_OF_POINT_1¶
longitude_of_point_1 projection parameter
-
SRS_PP_LATITUDE_OF_POINT_1¶
latitude_of_point_1 projection parameter
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SRS_PP_LONGITUDE_OF_POINT_2¶
longitude_of_point_2 projection parameter
-
SRS_PP_LATITUDE_OF_POINT_2¶
latitude_of_point_2 projection parameter
-
SRS_PP_LONGITUDE_OF_POINT_3¶
longitude_of_point_3 projection parameter
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SRS_PP_LATITUDE_OF_POINT_3¶
latitude_of_point_3 projection parameter
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SRS_PP_RECTIFIED_GRID_ANGLE¶
rectified_grid_angle projection parameter
-
SRS_PP_LANDSAT_NUMBER¶
landsat_number projection parameter
-
SRS_PP_PATH_NUMBER¶
path_number projection parameter
-
SRS_PP_PERSPECTIVE_POINT_HEIGHT¶
perspective_point_height projection parameter
-
SRS_PP_SATELLITE_HEIGHT¶
satellite_height projection parameter
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SRS_PP_FIPSZONE¶
fipszone projection parameter
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SRS_PP_ZONE¶
zone projection parameter
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SRS_PP_LATITUDE_OF_1ST_POINT¶
Latitude_Of_1st_Point projection parameter.
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SRS_PP_LONGITUDE_OF_1ST_POINT¶
Longitude_Of_1st_Point projection parameter.
-
SRS_PP_LATITUDE_OF_2ND_POINT¶
Latitude_Of_2nd_Point projection parameter.
-
SRS_PP_LONGITUDE_OF_2ND_POINT¶
Longitude_Of_2nd_Point projection parameter.
-
SRS_PP_PEG_POINT_LATITUDE¶
peg_point_latitude projection parameter
-
SRS_PP_PEG_POINT_LONGITUDE¶
peg_point_longitude projection parameter
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SRS_PP_PEG_POINT_HEADING¶
peg_point_heading projection parameter
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SRS_PP_PEG_POINT_HEIGHT¶
peg_point_height projection parameter
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SRS_UL_METER¶
Linear unit Meter.
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SRS_UL_FOOT¶
Linear unit Foot (International)
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SRS_UL_FOOT_CONV¶
Linear unit Foot (International) conversion factor to meter.
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SRS_UL_US_FOOT¶
Linear unit Foot.
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SRS_UL_US_FOOT_CONV¶
Linear unit Foot conversion factor to meter.
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SRS_UL_NAUTICAL_MILE¶
Linear unit Nautical Mile.
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SRS_UL_NAUTICAL_MILE_CONV¶
Linear unit Nautical Mile conversion factor to meter.
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SRS_UL_LINK¶
Linear unit Link.
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SRS_UL_LINK_CONV¶
Linear unit Link conversion factor to meter.
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SRS_UL_CHAIN¶
Linear unit Chain.
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SRS_UL_CHAIN_CONV¶
Linear unit Chain conversion factor to meter.
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SRS_UL_ROD¶
Linear unit Rod.
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SRS_UL_ROD_CONV¶
Linear unit Rod conversion factor to meter.
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SRS_UL_LINK_Clarke¶
Linear unit Link_Clarke.
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SRS_UL_LINK_Clarke_CONV¶
Linear unit Link_Clarke conversion factor to meter.
-
SRS_UL_KILOMETER¶
Linear unit Kilometer.
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SRS_UL_KILOMETER_CONV¶
Linear unit Kilometer conversion factor to meter.
-
SRS_UL_DECIMETER¶
Linear unit Decimeter.
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SRS_UL_DECIMETER_CONV¶
Linear unit Decimeter conversion factor to meter.
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SRS_UL_CENTIMETER¶
Linear unit Decimeter.
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SRS_UL_CENTIMETER_CONV¶
Linear unit Decimeter conversion factor to meter.
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SRS_UL_MILLIMETER¶
Linear unit Millimeter.
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SRS_UL_MILLIMETER_CONV¶
Linear unit Millimeter conversion factor to meter.
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SRS_UL_INTL_NAUT_MILE¶
Linear unit Nautical_Mile_International.
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SRS_UL_INTL_NAUT_MILE_CONV¶
Linear unit Nautical_Mile_International conversion factor to meter.
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SRS_UL_INTL_INCH¶
Linear unit Inch_International.
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SRS_UL_INTL_INCH_CONV¶
Linear unit Inch_International conversion factor to meter.
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SRS_UL_INTL_FOOT¶
Linear unit Foot_International.
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SRS_UL_INTL_FOOT_CONV¶
Linear unit Foot_International conversion factor to meter.
-
SRS_UL_INTL_YARD¶
Linear unit Yard_International.
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SRS_UL_INTL_YARD_CONV¶
Linear unit Yard_International conversion factor to meter.
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SRS_UL_INTL_STAT_MILE¶
Linear unit Statute_Mile_International.
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SRS_UL_INTL_STAT_MILE_CONV¶
Linear unit Statute_Mile_Internationalconversion factor to meter.
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SRS_UL_INTL_FATHOM¶
Linear unit Fathom_International.
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SRS_UL_INTL_FATHOM_CONV¶
Linear unit Fathom_International conversion factor to meter.
-
SRS_UL_INTL_CHAIN¶
Linear unit Chain_International.
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SRS_UL_INTL_CHAIN_CONV¶
Linear unit Chain_International conversion factor to meter.
-
SRS_UL_INTL_LINK¶
Linear unit Link_International.
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SRS_UL_INTL_LINK_CONV¶
Linear unit Link_International conversion factor to meter.
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SRS_UL_US_INCH¶
Linear unit Inch_US_Surveyor.
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SRS_UL_US_INCH_CONV¶
Linear unit Inch_US_Surveyor conversion factor to meter.
-
SRS_UL_US_YARD¶
Linear unit Yard_US_Surveyor.
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SRS_UL_US_YARD_CONV¶
Linear unit Yard_US_Surveyor conversion factor to meter.
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SRS_UL_US_CHAIN¶
Linear unit Chain_US_Surveyor.
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SRS_UL_US_CHAIN_CONV¶
Linear unit Chain_US_Surveyor conversion factor to meter.
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SRS_UL_US_STAT_MILE¶
Linear unit Statute_Mile_US_Surveyor.
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SRS_UL_US_STAT_MILE_CONV¶
Linear unit Statute_Mile_US_Surveyor conversion factor to meter.
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SRS_UL_INDIAN_YARD¶
Linear unit Yard_Indian.
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SRS_UL_INDIAN_YARD_CONV¶
Linear unit Yard_Indian conversion factor to meter.
-
SRS_UL_INDIAN_FOOT¶
Linear unit Foot_Indian.
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SRS_UL_INDIAN_FOOT_CONV¶
Linear unit Foot_Indian conversion factor to meter.
-
SRS_UL_INDIAN_CHAIN¶
Linear unit Chain_Indian.
-
SRS_UL_INDIAN_CHAIN_CONV¶
Linear unit Chain_Indian conversion factor to meter.
-
SRS_UA_DEGREE¶
Angular unit degree.
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SRS_UA_DEGREE_CONV¶
Angular unit degree conversion factor to radians.
-
SRS_UA_RADIAN¶
Angular unit radian.
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SRS_PM_GREENWICH¶
Prime meridian Greenwich.
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SRS_DN_NAD27¶
North_American_Datum_1927 datum name.
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SRS_DN_NAD83¶
North_American_Datum_1983 datum name.
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SRS_DN_WGS72¶
WGS_1972 datum name.
-
SRS_DN_WGS84¶
WGS_1984 datum name.
-
SRS_WGS84_SEMIMAJOR¶
Semi-major axis of the WGS84 ellipsoid.
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SRS_WGS84_INVFLATTENING¶
Inverse flattening of the WGS84 ellipsoid.
Typedefs
-
typedef void *OGRSpatialReferenceH¶
Opaque type for a Spatial Reference object.
-
typedef void *OGRCoordinateTransformationH¶
Opaque type for a coordinate transformation object.
-
typedef struct OSRCRSListParameters OSRCRSListParameters¶
Structure to describe optional parameters to OSRGetCRSInfoListFromDatabase()
Unused for now.
-
typedef struct OGRCoordinateTransformationOptions *OGRCoordinateTransformationOptionsH¶
Coordinate transformation options.
Enums
-
enum OGRAxisOrientation¶
Axis orientations (corresponds to CS_AxisOrientationEnum).
Values:
-
enumerator OAO_Other¶
Other.
-
enumerator OAO_North¶
North.
-
enumerator OAO_South¶
South.
-
enumerator OAO_East¶
East.
-
enumerator OAO_West¶
West.
-
enumerator OAO_Up¶
Up (to space)
-
enumerator OAO_Down¶
Down (to Earth center)
-
enumerator OAO_Other¶
-
enum OSRAxisMappingStrategy¶
Data axis to CRS axis mapping strategy.
Values:
-
enumerator OAMS_TRADITIONAL_GIS_ORDER¶
Traditional GIS order.
-
enumerator OAMS_AUTHORITY_COMPLIANT¶
Compliant with the order mandated by the CRS authority.
-
enumerator OAMS_CUSTOM¶
Custom.
-
enumerator OAMS_TRADITIONAL_GIS_ORDER¶
-
enum OSRCRSType¶
Type of Coordinate Reference System (CRS).
Values:
-
enumerator OSR_CRS_TYPE_GEOGRAPHIC_2D¶
Geographic 2D CRS.
-
enumerator OSR_CRS_TYPE_GEOGRAPHIC_3D¶
Geographic 3D CRS.
-
enumerator OSR_CRS_TYPE_GEOCENTRIC¶
Geocentric CRS.
-
enumerator OSR_CRS_TYPE_PROJECTED¶
Projected CRS.
-
enumerator OSR_CRS_TYPE_VERTICAL¶
Vertical CRS.
-
enumerator OSR_CRS_TYPE_COMPOUND¶
Compound CRS.
-
enumerator OSR_CRS_TYPE_OTHER¶
Other.
-
enumerator OSR_CRS_TYPE_GEOGRAPHIC_2D¶
Functions
-
const char *OSRAxisEnumToName(OGRAxisOrientation eOrientation)¶
Return the string representation for the OGRAxisOrientation enumeration.
For example "NORTH" for OAO_North.
- Returns
an internal string
-
void OSRSetPROJSearchPaths(const char *const *papszPaths)¶
Set the search path(s) for PROJ resource files.
- Since
GDAL 3.0
- Parameters
papszPaths -- NULL terminated list of directory paths.
-
char **OSRGetPROJSearchPaths(void)¶
Get the search path(s) for PROJ resource files.
- Since
GDAL 3.0.3
- Returns
NULL terminated list of directory paths. To be freed with CSLDestroy()
-
void OSRSetPROJAuxDbPaths(const char *const *papszPaths)¶
Set list of PROJ auxiliary database filenames.
See also
OSRGetPROJAuxDbPaths, proj_context_set_database_path
- Since
GDAL 3.3
- Parameters
papszAux -- NULL-terminated list of auxiliary database filenames, or NULL
-
char **OSRGetPROJAuxDbPaths(void)¶
Get PROJ auxiliary database filenames.
See also
OSRSetPROJAuxDbPaths, proj_context_set_database_path
- Since
GDAL 3.3.0
- Returns
NULL terminated list of PROJ auxiliary database filenames. To be freed with CSLDestroy()
-
void OSRGetPROJVersion(int *pnMajor, int *pnMinor, int *pnPatch)¶
Get the PROJ version.
- Since
GDAL 3.0.1
- Parameters
pnMajor -- Pointer to major version number, or NULL
pnMinor -- Pointer to minor version number, or NULL
pnPatch -- Pointer to patch version number, or NULL
-
OGRSpatialReferenceH OSRNewSpatialReference(const char*)¶
Constructor.
This function is the same as OGRSpatialReference::OGRSpatialReference()
-
OGRSpatialReferenceH OSRCloneGeogCS(OGRSpatialReferenceH)¶
Make a duplicate of the GEOGCS node of this OGRSpatialReference object.
This function is the same as OGRSpatialReference::CloneGeogCS().
-
OGRSpatialReferenceH OSRClone(OGRSpatialReferenceH)¶
Make a duplicate of this OGRSpatialReference.
This function is the same as OGRSpatialReference::Clone()
-
void OSRDestroySpatialReference(OGRSpatialReferenceH)¶
OGRSpatialReference destructor.
This function is the same as OGRSpatialReference::~OGRSpatialReference() and OGRSpatialReference::DestroySpatialReference()
- Parameters
hSRS -- the object to delete
-
int OSRReference(OGRSpatialReferenceH)¶
Increments the reference count by one.
This function is the same as OGRSpatialReference::Reference()
-
int OSRDereference(OGRSpatialReferenceH)¶
Decrements the reference count by one.
This function is the same as OGRSpatialReference::Dereference()
-
void OSRRelease(OGRSpatialReferenceH)¶
Decrements the reference count by one, and destroy if zero.
This function is the same as OGRSpatialReference::Release()
-
OGRErr OSRValidate(OGRSpatialReferenceH)¶
Validate SRS tokens.
This function is the same as the C++ method OGRSpatialReference::Validate().
-
OGRErr OSRImportFromEPSG(OGRSpatialReferenceH, int)¶
Initialize SRS based on EPSG geographic, projected or vertical CRS code.
This function is the same as OGRSpatialReference::importFromEPSG().
-
OGRErr OSRImportFromEPSGA(OGRSpatialReferenceH, int)¶
Initialize SRS based on EPSG geographic, projected or vertical CRS code.
This function is the same as OGRSpatialReference::importFromEPSGA().
-
OGRErr OSRImportFromWkt(OGRSpatialReferenceH, char**)¶
Import from WKT string.
Consult also the OGC WKT Coordinate System Issues page for implementation details of WKT in OGR.
This function is the same as OGRSpatialReference::importFromWkt().
-
OGRErr OSRImportFromProj4(OGRSpatialReferenceH, const char*)¶
Import PROJ coordinate string.
This function is the same as OGRSpatialReference::importFromProj4().
-
OGRErr OSRImportFromESRI(OGRSpatialReferenceH, char**)¶
Import coordinate system from ESRI .prj format(s).
This function is the same as the C++ method OGRSpatialReference::importFromESRI().
-
OGRErr OSRImportFromPCI(OGRSpatialReferenceH hSRS, const char*, const char*, double*)¶
Import coordinate system from PCI projection definition.
This function is the same as OGRSpatialReference::importFromPCI().
-
OGRErr OSRImportFromUSGS(OGRSpatialReferenceH, long, long, double*, long)¶
Import coordinate system from USGS projection definition.
This function is the same as OGRSpatialReference::importFromUSGS().
-
OGRErr OSRImportFromXML(OGRSpatialReferenceH, const char*)¶
Import coordinate system from XML format (GML only currently).
This function is the same as OGRSpatialReference::importFromXML().
-
OGRErr OSRImportFromDict(OGRSpatialReferenceH, const char*, const char*)¶
Read SRS from WKT dictionary.
This method will attempt to find the indicated coordinate system identity in the indicated dictionary file. If found, the WKT representation is imported and used to initialize this OGRSpatialReference.
More complete information on the format of the dictionary files can be found in the epsg.wkt file in the GDAL data tree. The dictionary files are searched for in the "GDAL" domain using CPLFindFile(). Normally this results in searching /usr/local/share/gdal or somewhere similar.
This method is the same as the C++ method OGRSpatialReference::importFromDict().
- Parameters
hSRS -- spatial reference system handle.
pszDictFile -- the name of the dictionary file to load.
pszCode -- the code to lookup in the dictionary.
- Returns
OGRERR_NONE on success, or OGRERR_SRS_UNSUPPORTED if the code isn't found, and OGRERR_SRS_FAILURE if something more dramatic goes wrong.
-
OGRErr OSRImportFromPanorama(OGRSpatialReferenceH, long, long, long, double*)¶
Import coordinate system from "Panorama" GIS projection definition.
-
OGRErr OSRImportFromOzi(OGRSpatialReferenceH, const char*const*)¶
Import coordinate system from OziExplorer projection definition.
This function will import projection definition in style, used by OziExplorer software.
Note: another version of this function with a different signature existed in GDAL 1.X.
- Since
OGR 2.0
- Parameters
hSRS -- spatial reference object.
papszLines -- Map file lines. This is an array of strings containing the whole OziExplorer .MAP file. The array is terminated by a NULL pointer.
- Returns
OGRERR_NONE on success or an error code in case of failure.
-
OGRErr OSRImportFromMICoordSys(OGRSpatialReferenceH, const char*)¶
Import Mapinfo style CoordSys definition.
This method is the equivalent of the C++ method OGRSpatialReference::importFromMICoordSys
-
OGRErr OSRImportFromERM(OGRSpatialReferenceH, const char*, const char*, const char*)¶
Create OGR WKT from ERMapper projection definitions.
This function is the same as OGRSpatialReference::importFromERM().
-
OGRErr OSRImportFromUrl(OGRSpatialReferenceH, const char*)¶
Set spatial reference from a URL.
This function is the same as OGRSpatialReference::importFromUrl()
-
OGRErr OSRExportToWkt(OGRSpatialReferenceH, char**)¶
Convert this SRS into WKT 1 format.
Consult also the OGC WKT Coordinate System Issues page for implementation details of WKT in OGR.
The WKT version can be overridden by using the OSR_WKT_FORMAT configuration option. Valid values are the one of the FORMAT option of exportToWkt( char ** ppszResult, const char* const* papszOptions ) const
This function is the same as OGRSpatialReference::exportToWkt().
-
OGRErr OSRExportToWktEx(OGRSpatialReferenceH, char **ppszResult, const char *const *papszOptions)¶
Convert this SRS into WKT format.
This function is the same as OGRSpatialReference::exportToWkt(char ** ppszResult,const char* const* papszOptions ) const
- Since
GDAL 3.0
-
OGRErr OSRExportToPrettyWkt(OGRSpatialReferenceH, char**, int)¶
Convert this SRS into a nicely formatted WKT 1 string for display to a person.
The WKT version can be overridden by using the OSR_WKT_FORMAT configuration option. Valid values are the one of the FORMAT option of exportToWkt( char ** ppszResult, const char* const* papszOptions ) const
This function is the same as OGRSpatialReference::exportToPrettyWkt().
-
OGRErr OSRExportToPROJJSON(OGRSpatialReferenceH hSRS, char **ppszReturn, const char *const *papszOptions)¶
Convert this SRS into PROJJSON format.
This function is the same as OGRSpatialReference::exportToPROJJSON() const
- Since
GDAL 3.1 and PROJ 6.2
-
OGRErr OSRExportToProj4(OGRSpatialReferenceH, char**)¶
Export coordinate system in PROJ.4 legacy format.
This function is the same as OGRSpatialReference::exportToProj4().
Warning
Use of this function is discouraged. Its behavior in GDAL >= 3 / PROJ >= 6 is significantly different from earlier versions. In particular +datum will only encode WGS84, NAD27 and NAD83, and +towgs84/+nadgrids terms will be missing most of the time. PROJ strings to encode CRS should be considered as a legacy solution. Using a AUTHORITY:CODE or WKT representation is the recommended way.
-
OGRErr OSRExportToPCI(OGRSpatialReferenceH, char**, char**, double**)¶
Export coordinate system in PCI projection definition.
This function is the same as OGRSpatialReference::exportToPCI().
-
OGRErr OSRExportToUSGS(OGRSpatialReferenceH, long*, long*, double**, long*)¶
Export coordinate system in USGS GCTP projection definition.
This function is the same as OGRSpatialReference::exportToUSGS().
-
OGRErr OSRExportToXML(OGRSpatialReferenceH, char**, const char*)¶
Export coordinate system in XML format.
This function is the same as OGRSpatialReference::exportToXML().
-
OGRErr OSRExportToPanorama(OGRSpatialReferenceH, long*, long*, long*, long*, double*)¶
Export coordinate system in "Panorama" GIS projection definition.
-
OGRErr OSRExportToMICoordSys(OGRSpatialReferenceH, char**)¶
Export coordinate system in Mapinfo style CoordSys format.
This method is the equivalent of the C++ method OGRSpatialReference::exportToMICoordSys
-
OGRErr OSRExportToERM(OGRSpatialReferenceH, char*, char*, char*)¶
Convert coordinate system to ERMapper format.
This function is the same as OGRSpatialReference::exportToERM().
-
OGRErr OSRMorphToESRI(OGRSpatialReferenceH)¶
Convert in place to ESRI WKT format.
This function is the same as the C++ method OGRSpatialReference::morphToESRI().
-
OGRErr OSRMorphFromESRI(OGRSpatialReferenceH)¶
Convert in place from ESRI WKT format.
This function is the same as the C++ method OGRSpatialReference::morphFromESRI().
-
OGRSpatialReferenceH OSRConvertToOtherProjection(OGRSpatialReferenceH hSRS, const char *pszTargetProjection, const char *const *papszOptions)¶
Convert to another equivalent projection.
Currently implemented:
SRS_PT_MERCATOR_1SP to SRS_PT_MERCATOR_2SP
SRS_PT_MERCATOR_2SP to SRS_PT_MERCATOR_1SP
SRS_PT_LAMBERT_CONFORMAL_CONIC_1SP to SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP
SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP to SRS_PT_LAMBERT_CONFORMAL_CONIC_1SP
- Since
GDAL 2.3
- Parameters
hSRS -- source SRS
pszTargetProjection -- target projection.
papszOptions -- lists of options. None supported currently.
- Returns
a new SRS, or NULL in case of error.
-
const char *OSRGetName(OGRSpatialReferenceH hSRS)¶
Return the CRS name.
The returned value is only short lived and should not be used after other calls to methods on this object.
- Since
GDAL 3.0
-
OGRErr OSRSetAttrValue(OGRSpatialReferenceH hSRS, const char *pszNodePath, const char *pszNewNodeValue)¶
Set attribute value in spatial reference.
This function is the same as OGRSpatialReference::SetNode()
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const char *OSRGetAttrValue(OGRSpatialReferenceH hSRS, const char *pszName, int iChild)¶
Fetch indicated attribute of named node.
This function is the same as OGRSpatialReference::GetAttrValue()
-
OGRErr OSRSetAngularUnits(OGRSpatialReferenceH, const char*, double)¶
Set the angular units for the geographic coordinate system.
This function is the same as OGRSpatialReference::SetAngularUnits()
-
double OSRGetAngularUnits(OGRSpatialReferenceH, char**)¶
Fetch angular geographic coordinate system units.
This function is the same as OGRSpatialReference::GetAngularUnits()
-
OGRErr OSRSetLinearUnits(OGRSpatialReferenceH, const char*, double)¶
Set the linear units for the projection.
This function is the same as OGRSpatialReference::SetLinearUnits()
-
OGRErr OSRSetTargetLinearUnits(OGRSpatialReferenceH, const char*, const char*, double)¶
Set the linear units for the target node.
This function is the same as OGRSpatialReference::SetTargetLinearUnits()
- Since
OGR 1.9.0
-
OGRErr OSRSetLinearUnitsAndUpdateParameters(OGRSpatialReferenceH, const char*, double)¶
Set the linear units for the projection.
This function is the same as OGRSpatialReference::SetLinearUnitsAndUpdateParameters()
-
double OSRGetLinearUnits(OGRSpatialReferenceH, char**)¶
Fetch linear projection units.
This function is the same as OGRSpatialReference::GetLinearUnits()
-
double OSRGetTargetLinearUnits(OGRSpatialReferenceH, const char*, char**)¶
Fetch linear projection units.
This function is the same as OGRSpatialReference::GetTargetLinearUnits()
- Since
OGR 1.9.0
-
double OSRGetPrimeMeridian(OGRSpatialReferenceH, char**)¶
Fetch prime meridian info.
This function is the same as OGRSpatialReference::GetPrimeMeridian()
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int OSRIsGeographic(OGRSpatialReferenceH)¶
Check if geographic coordinate system.
This function is the same as OGRSpatialReference::IsGeographic().
-
int OSRIsDerivedGeographic(OGRSpatialReferenceH)¶
Check if derived geographic coordinate system.
(for example a rotated long/lat grid)
This function is the same as OGRSpatialReference::IsDerivedGeographic().
-
int OSRIsLocal(OGRSpatialReferenceH)¶
Check if local coordinate system.
This function is the same as OGRSpatialReference::IsLocal().
-
int OSRIsProjected(OGRSpatialReferenceH)¶
Check if projected coordinate system.
This function is the same as OGRSpatialReference::IsProjected().
-
int OSRIsCompound(OGRSpatialReferenceH)¶
Check if the coordinate system is compound.
This function is the same as OGRSpatialReference::IsCompound().
-
int OSRIsGeocentric(OGRSpatialReferenceH)¶
Check if geocentric coordinate system.
This function is the same as OGRSpatialReference::IsGeocentric().
- Since
OGR 1.9.0
-
int OSRIsVertical(OGRSpatialReferenceH)¶
Check if vertical coordinate system.
This function is the same as OGRSpatialReference::IsVertical().
- Since
OGR 1.8.0
-
int OSRIsSameGeogCS(OGRSpatialReferenceH, OGRSpatialReferenceH)¶
Do the GeogCS'es match?
This function is the same as OGRSpatialReference::IsSameGeogCS().
-
int OSRIsSameVertCS(OGRSpatialReferenceH, OGRSpatialReferenceH)¶
Do the VertCS'es match?
This function is the same as OGRSpatialReference::IsSameVertCS().
-
int OSRIsSame(OGRSpatialReferenceH, OGRSpatialReferenceH)¶
Do these two spatial references describe the same system ?
This function is the same as OGRSpatialReference::IsSame().
-
int OSRIsSameEx(OGRSpatialReferenceH, OGRSpatialReferenceH, const char *const *papszOptions)¶
Do these two spatial references describe the same system ?
This function is the same as OGRSpatialReference::IsSame().
-
OGRErr OSRSetLocalCS(OGRSpatialReferenceH hSRS, const char *pszName)¶
Set the user visible LOCAL_CS name.
This function is the same as OGRSpatialReference::SetLocalCS()
-
OGRErr OSRSetProjCS(OGRSpatialReferenceH hSRS, const char *pszName)¶
Set the user visible PROJCS name.
This function is the same as OGRSpatialReference::SetProjCS()
-
OGRErr OSRSetGeocCS(OGRSpatialReferenceH hSRS, const char *pszName)¶
Set the user visible PROJCS name.
This function is the same as OGRSpatialReference::SetGeocCS()
- Since
OGR 1.9.0
-
OGRErr OSRSetWellKnownGeogCS(OGRSpatialReferenceH hSRS, const char *pszName)¶
Set a GeogCS based on well known name.
This function is the same as OGRSpatialReference::SetWellKnownGeogCS()
-
OGRErr OSRSetFromUserInput(OGRSpatialReferenceH hSRS, const char*)¶
Set spatial reference from various text formats.
This function is the same as OGRSpatialReference::SetFromUserInput()
-
OGRErr OSRCopyGeogCSFrom(OGRSpatialReferenceH hSRS, const OGRSpatialReferenceH hSrcSRS)¶
Copy GEOGCS from another OGRSpatialReference.
This function is the same as OGRSpatialReference::CopyGeogCSFrom()
-
OGRErr OSRSetTOWGS84(OGRSpatialReferenceH hSRS, double, double, double, double, double, double, double)¶
Set the Bursa-Wolf conversion to WGS84.
This function is the same as OGRSpatialReference::SetTOWGS84().
-
OGRErr OSRGetTOWGS84(OGRSpatialReferenceH hSRS, double*, int)¶
Fetch TOWGS84 parameters, if available.
This function is the same as OGRSpatialReference::GetTOWGS84().
-
OGRErr OSRAddGuessedTOWGS84(OGRSpatialReferenceH hSRS)¶
Try to add a a 3-parameter or 7-parameter Helmert transformation to WGS84.
This function is the same as OGRSpatialReference::AddGuessedTOWGS84().
- Since
GDAL 3.0.3
-
OGRErr OSRSetCompoundCS(OGRSpatialReferenceH hSRS, const char *pszName, OGRSpatialReferenceH hHorizSRS, OGRSpatialReferenceH hVertSRS)¶
Setup a compound coordinate system.
This function is the same as OGRSpatialReference::SetCompoundCS()
-
OGRErr OSRPromoteTo3D(OGRSpatialReferenceH hSRS, const char *pszName)¶
"Promotes" a 2D CRS to a 3D CRS one.
See OGRSpatialReference::PromoteTo3D()
- Since
GDAL 3.1 and PROJ 6.3
-
OGRErr OSRDemoteTo2D(OGRSpatialReferenceH hSRS, const char *pszName)¶
"Demote" a 3D CRS to a 2D CRS one.
See OGRSpatialReference::DemoteTo2D()
- Since
GDAL 3.2 and PROJ 6.3
-
OGRErr OSRSetGeogCS(OGRSpatialReferenceH hSRS, const char *pszGeogName, const char *pszDatumName, const char *pszEllipsoidName, double dfSemiMajor, double dfInvFlattening, const char *pszPMName, double dfPMOffset, const char *pszUnits, double dfConvertToRadians)¶
Set geographic coordinate system.
This function is the same as OGRSpatialReference::SetGeogCS()
-
OGRErr OSRSetVertCS(OGRSpatialReferenceH hSRS, const char *pszVertCSName, const char *pszVertDatumName, int nVertDatumType)¶
Setup the vertical coordinate system.
This function is the same as OGRSpatialReference::SetVertCS()
- Since
OGR 1.9.0
-
double OSRGetSemiMajor(OGRSpatialReferenceH, OGRErr*)¶
Get spheroid semi major axis.
This function is the same as OGRSpatialReference::GetSemiMajor()
-
double OSRGetSemiMinor(OGRSpatialReferenceH, OGRErr*)¶
Get spheroid semi minor axis.
This function is the same as OGRSpatialReference::GetSemiMinor()
-
double OSRGetInvFlattening(OGRSpatialReferenceH, OGRErr*)¶
Get spheroid inverse flattening.
This function is the same as OGRSpatialReference::GetInvFlattening()
-
OGRErr OSRSetAuthority(OGRSpatialReferenceH hSRS, const char *pszTargetKey, const char *pszAuthority, int nCode)¶
Set the authority for a node.
This function is the same as OGRSpatialReference::SetAuthority().
-
const char *OSRGetAuthorityCode(OGRSpatialReferenceH hSRS, const char *pszTargetKey)¶
Get the authority code for a node.
This function is the same as OGRSpatialReference::GetAuthorityCode().
-
const char *OSRGetAuthorityName(OGRSpatialReferenceH hSRS, const char *pszTargetKey)¶
Get the authority name for a node.
This function is the same as OGRSpatialReference::GetAuthorityName().
-
int OSRGetAreaOfUse(OGRSpatialReferenceH hSRS, double *pdfWestLongitudeDeg, double *pdfSouthLatitudeDeg, double *pdfEastLongitudeDeg, double *pdfNorthLatitudeDeg, const char **ppszAreaName)¶
Return the area of use of the CRS.
This function is the same as the OGRSpatialReference::GetAreaOfUse() method.
- Since
GDAL 3.0
-
OGRErr OSRSetProjection(OGRSpatialReferenceH, const char*)¶
Set a projection name.
This function is the same as OGRSpatialReference::SetProjection()
-
OGRErr OSRSetProjParm(OGRSpatialReferenceH, const char*, double)¶
Set a projection parameter value.
This function is the same as OGRSpatialReference::SetProjParm()
-
double OSRGetProjParm(OGRSpatialReferenceH hSRS, const char *pszParamName, double dfDefault, OGRErr*)¶
Fetch a projection parameter value.
This function is the same as OGRSpatialReference::GetProjParm()
-
OGRErr OSRSetNormProjParm(OGRSpatialReferenceH, const char*, double)¶
Set a projection parameter with a normalized value.
This function is the same as OGRSpatialReference::SetNormProjParm()
-
double OSRGetNormProjParm(OGRSpatialReferenceH hSRS, const char *pszParamName, double dfDefault, OGRErr*)¶
This function is the same as OGRSpatialReference::
This function is the same as OGRSpatialReference::GetNormProjParm()
-
OGRErr OSRSetUTM(OGRSpatialReferenceH hSRS, int nZone, int bNorth)¶
Set UTM projection definition.
This is the same as the C++ method OGRSpatialReference::SetUTM()
-
int OSRGetUTMZone(OGRSpatialReferenceH hSRS, int *pbNorth)¶
Get utm zone information.
This is the same as the C++ method OGRSpatialReference::GetUTMZone()
-
OGRErr OSRSetStatePlane(OGRSpatialReferenceH hSRS, int nZone, int bNAD83)¶
Set State Plane projection definition.
This function is the same as OGRSpatialReference::SetStatePlane().
-
OGRErr OSRSetStatePlaneWithUnits(OGRSpatialReferenceH hSRS, int nZone, int bNAD83, const char *pszOverrideUnitName, double dfOverrideUnit)¶
Set State Plane projection definition.
This function is the same as OGRSpatialReference::SetStatePlane().
-
OGRErr OSRAutoIdentifyEPSG(OGRSpatialReferenceH hSRS)¶
Set EPSG authority info if possible.
This function is the same as OGRSpatialReference::AutoIdentifyEPSG().
Since GDAL 2.3, the OSRFindMatches() function can also be used for improved matching by researching the EPSG catalog.
-
OGRSpatialReferenceH *OSRFindMatches(OGRSpatialReferenceH hSRS, char **papszOptions, int *pnEntries, int **ppanMatchConfidence)¶
Try to identify a match between the passed SRS and a related SRS in a catalog.
Matching may be partial, or may fail. Returned entries will be sorted by decreasing match confidence (first entry has the highest match confidence).
The exact way matching is done may change in future versions. Starting with GDAL 3.0, it relies on PROJ' proj_identify() function.
This function is the same as OGRSpatialReference::FindMatches().
- Since
GDAL 2.3
- Parameters
hSRS -- SRS to match
papszOptions -- NULL terminated list of options or NULL
pnEntries -- Output parameter. Number of values in the returned array.
ppanMatchConfidence -- Output parameter (or NULL). *ppanMatchConfidence will be allocated to an array of *pnEntries whose values between 0 and 100 indicate the confidence in the match. 100 is the highest confidence level. The array must be freed with CPLFree().
- Returns
an array of SRS that match the passed SRS, or NULL. Must be freed with OSRFreeSRSArray()
-
void OSRFreeSRSArray(OGRSpatialReferenceH *pahSRS)¶
Free return of OSRIdentifyMatches()
- Since
GDAL 2.3
- Parameters
pahSRS -- array of SRS (must be NULL terminated)
-
int OSREPSGTreatsAsLatLong(OGRSpatialReferenceH hSRS)¶
This function returns TRUE if EPSG feels this geographic coordinate system should be treated as having lat/long coordinate ordering.
This function is the same as OGRSpatialReference::OSREPSGTreatsAsLatLong().
-
int OSREPSGTreatsAsNorthingEasting(OGRSpatialReferenceH hSRS)¶
This function returns TRUE if EPSG feels this projected coordinate system should be treated as having northing/easting coordinate ordering.
This function is the same as OGRSpatialReference::EPSGTreatsAsNorthingEasting().
- Since
OGR 1.10.0
-
const char *OSRGetAxis(OGRSpatialReferenceH hSRS, const char *pszTargetKey, int iAxis, OGRAxisOrientation *peOrientation)¶
Fetch the orientation of one axis.
This method is the equivalent of the C++ method OGRSpatialReference::GetAxis
-
int OSRGetAxesCount(OGRSpatialReferenceH hSRS)¶
Return the number of axis of the coordinate system of the CRS.
This method is the equivalent of the C++ method OGRSpatialReference::GetAxesCount()
- Since
GDAL 3.1
-
OGRErr OSRSetAxes(OGRSpatialReferenceH hSRS, const char *pszTargetKey, const char *pszXAxisName, OGRAxisOrientation eXAxisOrientation, const char *pszYAxisName, OGRAxisOrientation eYAxisOrientation)¶
Set the axes for a coordinate system.
This method is the equivalent of the C++ method OGRSpatialReference::SetAxes
-
OSRAxisMappingStrategy OSRGetAxisMappingStrategy(OGRSpatialReferenceH hSRS)¶
Return the data axis to CRS axis mapping strategy.
See OGRSpatialReference::GetAxisMappingStrategy()
- Since
GDAL 3.0
-
void OSRSetAxisMappingStrategy(OGRSpatialReferenceH hSRS, OSRAxisMappingStrategy strategy)¶
Set the data axis to CRS axis mapping strategy.
See OGRSpatialReference::SetAxisMappingStrategy()
- Since
GDAL 3.0
-
const int *OSRGetDataAxisToSRSAxisMapping(OGRSpatialReferenceH hSRS, int *pnCount)¶
Return the data axis to SRS axis mapping.
See OGRSpatialReference::GetDataAxisToSRSAxisMapping()
- Since
GDAL 3.0
-
OGRErr OSRSetDataAxisToSRSAxisMapping(OGRSpatialReferenceH hSRS, int nMappingSize, const int *panMapping)¶
Set a custom data axis to CRS axis mapping.
s Automatically implies SetAxisMappingStrategy(OAMS_CUSTOM)
See OGRSpatialReference::SetDataAxisToSRSAxisMapping()
- Since
GDAL 3.1
-
OGRErr OSRSetACEA(OGRSpatialReferenceH hSRS, double dfStdP1, double dfStdP2, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Albers Conic Equal Area.
-
OGRErr OSRSetAE(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Azimuthal Equidistant.
-
OGRErr OSRSetBonne(OGRSpatialReferenceH hSRS, double dfStandardParallel, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)¶
Bonne.
-
OGRErr OSRSetCEA(OGRSpatialReferenceH hSRS, double dfStdP1, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)¶
Cylindrical Equal Area.
-
OGRErr OSRSetCS(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Cassini-Soldner.
-
OGRErr OSRSetEC(OGRSpatialReferenceH hSRS, double dfStdP1, double dfStdP2, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Equidistant Conic.
-
OGRErr OSRSetEckert(OGRSpatialReferenceH hSRS, int nVariation, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)¶
Eckert I-VI.
-
OGRErr OSRSetEckertIV(OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)¶
Eckert IV.
-
OGRErr OSRSetEckertVI(OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)¶
Eckert VI.
-
OGRErr OSRSetEquirectangular(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Equirectangular.
-
OGRErr OSRSetEquirectangular2(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfPseudoStdParallel1, double dfFalseEasting, double dfFalseNorthing)¶
Equirectangular generalized form.
-
OGRErr OSRSetGS(OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)¶
Gall Stereograpic.
-
OGRErr OSRSetGH(OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)¶
Goode Homolosine.
-
OGRErr OSRSetIGH(OGRSpatialReferenceH hSRS)¶
Interrupted Goode Homolosine.
-
OGRErr OSRSetGEOS(OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfSatelliteHeight, double dfFalseEasting, double dfFalseNorthing)¶
GEOS - Geostationary Satellite View.
-
OGRErr OSRSetGaussSchreiberTMercator(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Gauss Schreiber Transverse Mercator.
-
OGRErr OSRSetGnomonic(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Gnomonic.
-
OGRErr OSRSetHOM(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfAzimuth, double dfRectToSkew, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Hotine Oblique Mercator using azimuth angle.
Hotine Oblique Mercator using azimuth angle.
This is the same as the C++ method OGRSpatialReference::SetHOM()
-
OGRErr OSRSetHOMAC(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfAzimuth, double dfRectToSkew, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Set an Oblique Mercator projection using azimuth angle.
This is the same as the C++ method OGRSpatialReference::SetHOMAC()
-
OGRErr OSRSetHOM2PNO(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfLat1, double dfLong1, double dfLat2, double dfLong2, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Hotine Oblique Mercator using two points on centerline.
Hotine Oblique Mercator using two points on centerline.
This is the same as the C++ method OGRSpatialReference::SetHOM2PNO()
-
OGRErr OSRSetIWMPolyconic(OGRSpatialReferenceH hSRS, double dfLat1, double dfLat2, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
International Map of the World Polyconic.
-
OGRErr OSRSetKrovak(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfAzimuth, double dfPseudoStdParallelLat, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Krovak Oblique Conic Conformal.
-
OGRErr OSRSetLAEA(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Lambert Azimuthal Equal-Area.
-
OGRErr OSRSetLCC(OGRSpatialReferenceH hSRS, double dfStdP1, double dfStdP2, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Lambert Conformal Conic.
-
OGRErr OSRSetLCC1SP(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Lambert Conformal Conic 1SP.
-
OGRErr OSRSetLCCB(OGRSpatialReferenceH hSRS, double dfStdP1, double dfStdP2, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Lambert Conformal Conic (Belgium)
-
OGRErr OSRSetMC(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Miller Cylindrical.
-
OGRErr OSRSetMercator(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Mercator.
-
OGRErr OSRSetMercator2SP(OGRSpatialReferenceH hSRS, double dfStdP1, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Mercator 2SP.
-
OGRErr OSRSetMollweide(OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)¶
Mollweide.
-
OGRErr OSRSetNZMG(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
New Zealand Map Grid.
-
OGRErr OSRSetOS(OGRSpatialReferenceH hSRS, double dfOriginLat, double dfCMeridian, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Oblique Stereographic.
-
OGRErr OSRSetOrthographic(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Orthographic.
-
OGRErr OSRSetPolyconic(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Polyconic.
-
OGRErr OSRSetPS(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Polar Stereographic.
-
OGRErr OSRSetRobinson(OGRSpatialReferenceH hSRS, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Robinson.
-
OGRErr OSRSetSinusoidal(OGRSpatialReferenceH hSRS, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Sinusoidal.
-
OGRErr OSRSetStereographic(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Stereographic.
-
OGRErr OSRSetSOC(OGRSpatialReferenceH hSRS, double dfLatitudeOfOrigin, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)¶
Swiss Oblique Cylindrical.
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OGRErr OSRSetTM(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Transverse Mercator.
Special processing available for Transverse Mercator with GDAL >= 1.10 and PROJ >= 4.8 : see OGRSpatialReference::exportToProj4().
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OGRErr OSRSetTMVariant(OGRSpatialReferenceH hSRS, const char *pszVariantName, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Transverse Mercator variant.
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OGRErr OSRSetTMG(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
Tunesia Mining Grid
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OGRErr OSRSetTMSO(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)¶
Transverse Mercator (South Oriented)
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OGRErr OSRSetTPED(OGRSpatialReferenceH hSRS, double dfLat1, double dfLong1, double dfLat2, double dfLong2, double dfFalseEasting, double dfFalseNorthing)¶
TPED (Two Point Equi Distant)
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OGRErr OSRSetVDG(OGRSpatialReferenceH hSRS, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)¶
VanDerGrinten.
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OGRErr OSRSetWagner(OGRSpatialReferenceH hSRS, int nVariation, double dfCenterLat, double dfFalseEasting, double dfFalseNorthing)¶
Wagner I — VII.
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OGRErr OSRSetQSC(OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong)¶
Quadrilateralized Spherical Cube.
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OGRErr OSRSetSCH(OGRSpatialReferenceH hSRS, double dfPegLat, double dfPegLong, double dfPegHeading, double dfPegHgt)¶
Spherical, Cross-track, Height.
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OGRErr OSRSetVerticalPerspective(OGRSpatialReferenceH hSRS, double dfTopoOriginLat, double dfTopoOriginLon, double dfTopoOriginHeight, double dfViewPointHeight, double dfFalseEasting, double dfFalseNorthing)¶
Vertical Perspective / Near-sided Perspective.
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double OSRCalcInvFlattening(double dfSemiMajor, double dfSemiMinor)¶
Compute inverse flattening from semi-major and semi-minor axis.
- Since
GDAL 2.0
- Parameters
dfSemiMajor -- Semi-major axis length.
dfSemiMinor -- Semi-minor axis length.
- Returns
inverse flattening, or 0 if both axis are equal.
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double OSRCalcSemiMinorFromInvFlattening(double dfSemiMajor, double dfInvFlattening)¶
Compute semi-minor axis from semi-major axis and inverse flattening.
- Since
GDAL 2.0
- Parameters
dfSemiMajor -- Semi-major axis length.
dfInvFlattening -- Inverse flattening or 0 for sphere.
- Returns
semi-minor axis
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void OSRCleanup(void)¶
Cleanup cached SRS related memory.
This function will attempt to cleanup any cache spatial reference related information, such as cached tables of coordinate systems.
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OSRCRSInfo **OSRGetCRSInfoListFromDatabase(const char *pszAuthName, const OSRCRSListParameters *params, int *pnOutResultCount)¶
Enumerate CRS objects from the database.
The returned object is an array of OSRCRSInfo* pointers, whose last entry is NULL. This array should be freed with OSRDestroyCRSInfoList()
- Since
GDAL 3.0
- Parameters
pszAuthName -- Authority name, used to restrict the search. Or NULL for all authorities.
params -- Additional criteria. Must be set to NULL for now.
pnOutResultCount -- Output parameter pointing to an integer to receive the size of the result list. Might be NULL
- Returns
an array of OSRCRSInfo* pointers to be freed with OSRDestroyCRSInfoList(), or NULL in case of error.
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void OSRDestroyCRSInfoList(OSRCRSInfo **list)¶
Destroy the result returned by OSRGetCRSInfoListFromDatabase().
- Since
GDAL 3.0
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OGRCoordinateTransformationH OCTNewCoordinateTransformation(OGRSpatialReferenceH hSourceSRS, OGRSpatialReferenceH hTargetSRS)¶
Create transformation object.
This is the same as the C++ function OGRCreateCoordinateTransformation(const OGRSpatialReference *, const OGRSpatialReference *)
Input spatial reference system objects are assigned by copy (calling clone() method) and no ownership transfer occurs.
OCTDestroyCoordinateTransformation() should be used to destroy transformation objects.
This will honour the axis order advertized by the source and target SRS, as well as their "data axis to SRS axis mapping". To have a behavior similar to GDAL < 3.0, the OGR_CT_FORCE_TRADITIONAL_GIS_ORDER configuration option can be set to YES.
- Parameters
hSourceSRS -- source spatial reference system.
hTargetSRS -- target spatial reference system.
- Returns
NULL on failure or a ready to use transformation object.
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OGRCoordinateTransformationOptionsH OCTNewCoordinateTransformationOptions(void)¶
Create coordinate transformation options.
To be freed with OCTDestroyCoordinateTransformationOptions()
- Since
GDAL 3.0
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int OCTCoordinateTransformationOptionsSetOperation(OGRCoordinateTransformationOptionsH hOptions, const char *pszCO, int bReverseCO)¶
Sets a coordinate operation.
See OGRCoordinateTransformationOptions::SetCoordinateTransformation()
- Since
GDAL 3.0
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int OCTCoordinateTransformationOptionsSetAreaOfInterest(OGRCoordinateTransformationOptionsH hOptions, double dfWestLongitudeDeg, double dfSouthLatitudeDeg, double dfEastLongitudeDeg, double dfNorthLatitudeDeg)¶
Sets an area of interest.
See OGRCoordinateTransformationOptions::SetAreaOfInterest()
- Since
GDAL 3.0
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int OCTCoordinateTransformationOptionsSetDesiredAccuracy(OGRCoordinateTransformationOptionsH hOptions, double dfAccuracy)¶
Sets the desired accuracy for coordinate operations.
See OGRCoordinateTransformationOptions::SetDesiredAccuracy()
- Since
GDAL 3.3
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int OCTCoordinateTransformationOptionsSetBallparkAllowed(OGRCoordinateTransformationOptionsH hOptions, int bAllowBallpark)¶
Sets whether ballpark transformations are allowed.
See OGRCoordinateTransformationOptions::SetDesiredAccuracy()
- Since
GDAL 3.3 and PROJ 8
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void OCTDestroyCoordinateTransformationOptions(OGRCoordinateTransformationOptionsH)¶
Destroy coordinate transformation options.
- Since
GDAL 3.0
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OGRCoordinateTransformationH OCTNewCoordinateTransformationEx(OGRSpatialReferenceH hSourceSRS, OGRSpatialReferenceH hTargetSRS, OGRCoordinateTransformationOptionsH hOptions)¶
Create transformation object.
This is the same as the C++ function OGRCreateCoordinateTransformation(const OGRSpatialReference *, const OGRSpatialReference *, const OGRCoordinateTransformationOptions& )
Input spatial reference system objects are assigned by copy (calling clone() method) and no ownership transfer occurs.
OCTDestroyCoordinateTransformation() should be used to destroy transformation objects.
The source SRS and target SRS should generally not be NULL. This is only allowed if a custom coordinate operation is set through the hOptions argument.
This will honour the axis order advertized by the source and target SRS, as well as their "data axis to SRS axis mapping". To have a behavior similar to GDAL < 3.0, the OGR_CT_FORCE_TRADITIONAL_GIS_ORDER configuration option can be set to YES.
If options contains a user defined coordinate transformation pipeline, it will be unconditionally used. If options has an area of interest defined, it will be used to research the best fitting coordinate transformation (which will be used for all coordinate transformations, even if they don't fall into the declared area of interest) If no options are set, then a list of candidate coordinate operations will be researched, and at each call to Transform(), the best of those candidate regarding the centroid of the coordinate set will be dynamically selected.
- Since
GDAL 3.0
- Parameters
hSourceSRS -- source spatial reference system.
hTargetSRS -- target spatial reference system.
hOptions -- Coordinate transformation options.
- Returns
NULL on failure or a ready to use transformation object.
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void OCTDestroyCoordinateTransformation(OGRCoordinateTransformationH)¶
OGRCoordinateTransformation destructor.
This function is the same as OGRCoordinateTransformation::DestroyCT()
- Parameters
hCT -- the object to delete
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int OCTTransform(OGRCoordinateTransformationH hCT, int nCount, double *x, double *y, double *z)¶
Transform an array of points.
- Parameters
hTransform -- Transformation object
nCount -- Number of points
x -- Array of nCount x values.
y -- Array of nCount y values.
z -- Array of nCount z values.
- Returns
TRUE or FALSE
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int OCTTransformEx(OGRCoordinateTransformationH hCT, int nCount, double *x, double *y, double *z, int *pabSuccess)¶
Transform an array of points.
- Parameters
hTransform -- Transformation object
nCount -- Number of points
x -- Array of nCount x values.
y -- Array of nCount y values.
z -- Array of nCount z values.
pabSuccess -- Output array of nCount value that will be set to TRUE/FALSE
- Returns
TRUE or FALSE
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int OCTTransform4D(OGRCoordinateTransformationH hCT, int nCount, double *x, double *y, double *z, double *t, int *pabSuccess)¶
Transform an array of points.
- Since
GDAL 3.0
- Parameters
hTransform -- Transformation object
nCount -- Number of points
x -- Array of nCount x values. Should not be NULL
y -- Array of nCount y values. Should not be NULL
z -- Array of nCount z values. Might be NULL
t -- Array of nCount time values. Might be NULL
pabSuccess -- Output array of nCount value that will be set to TRUE/FALSE. Might be NULL.
- Returns
TRUE or FALSE
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int OCTTransform4DWithErrorCodes(OGRCoordinateTransformationH hCT, int nCount, double *x, double *y, double *z, double *t, int *panErrorCodes)¶
Transform an array of points.
- Since
GDAL 3.3, and PROJ 8 to be able to use PROJ public error codes
- Parameters
hTransform -- Transformation object
nCount -- Number of points
x -- Array of nCount x values. Should not be NULL
y -- Array of nCount y values. Should not be NULL
z -- Array of nCount z values. Might be NULL
t -- Array of nCount time values. Might be NULL
panErrorCodes -- Output array of nCount value that will be set to 0 for success, or a non-zero value for failure. Refer to PROJ 8 public error codes. Might be NULL
- Returns
TRUE or FALSE
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struct OSRCRSInfo¶
- #include <ogr_srs_api.h>
Structure given overall description of a CRS.
This structure may grow over time, and should not be directly allocated by client code.
Public Members
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char *pszAuthName¶
Authority name.
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char *pszCode¶
Object code.
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char *pszName¶
Object name.
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OSRCRSType eType¶
Object type.
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int bDeprecated¶
Whether the object is deprecated.
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int bBboxValid¶
Whereas the west_lon_degree, south_lat_degree, east_lon_degree and north_lat_degree fields are valid.
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double dfWestLongitudeDeg¶
Western-most longitude of the area of use, in degrees.
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double dfSouthLatitudeDeg¶
Southern-most latitude of the area of use, in degrees.
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double dfEastLongitudeDeg¶
Eastern-most longitude of the area of use, in degrees.
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double dfNorthLatitudeDeg¶
Northern-most latitude of the area of use, in degrees.
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char *pszAreaName¶
Name of the area of use.
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char *pszProjectionMethod¶
Name of the projection method for a projected CRS.
Might be NULL even for projected CRS in some cases.
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char *pszAuthName¶