get_measurements {rmacrostrat} | R Documentation |
Retrieve a range of measurements relevant to making geological inferences.
get_measurements(
measure_id = NULL,
measurement_id = NULL,
measurement = NULL,
measurement_type = NULL,
measurement_class = NULL,
measuremeta_id = NULL,
measure_phase = NULL,
column_id = NULL,
section_id = NULL,
unit_id = NULL,
interval_name = NULL,
lithology_id = NULL,
lithology_type = NULL,
lithology_class = NULL,
project_id = NULL,
sf = FALSE
)
measure_id |
|
measurement_id |
|
measurement |
|
measurement_type |
|
measurement_class |
|
measuremeta_id |
|
measure_phase |
|
column_id |
|
section_id |
|
unit_id |
|
interval_name |
|
lithology_id |
|
lithology_type |
|
lithology_class |
|
project_id |
|
sf |
|
More information can be found about the inputs and outputs for this
function by using def_measurements()
.
A data.frame
containing the following columns:
measurement_id
: The unique identification number of the
measurement.
measuremeta_id
: The unique identification number of the sample.
measurement
: The name of the type of measurement obtained.
measure_units
: The units of the measurement.
measure_phase
: The phase from which the measurement was taken.
method
: The method used to generate the measurement.
n
: The number of observations or measurements.
ref_id
: The unique identification number of the reference
associated with the measurement.
sample_name
: The name of the sample.
geo_unit
: The Macrostrat unit from which the measurement was
taken.
samp_lith
: A lithological description of the rock from which
the measurement was taken.
samp_lith_id
: The unique identification number of the
lithological description of the rock from which the measurement was taken.
samp_desc
: A description of the sample used to generate the
measurement.
samp_age
: The geological time interval assigned to the
measurement.
lat
: Decimal degree latitude of the measurement.
lng
: Decimal degree longitude of the measurement.
unit_id
: The unique identification number of the Macrostrat
unit from which the measurement was taken.
unit_rel_pos
: The relative positive of the sample within the
unit.
col_id
: The unique identification number of the Macrostrat
column from which the measurement was taken.
strat_name_id
: The unique identification number of the
stratigraphic name attributed to the unit from which the measurement was
taken.
match_basis
: A terse description of how the measuremeta data
was linked to the Macrostrat unit.
ref
: The name of the reference.
measure_value
: The value of the measurement.
measure_error
: The reported error on the measurement value.
measure_position
: The position of the measurement in the
Macrostrat column.
measure_n
: The number of measurements used to generate the
measure_value; if greater than one, usually used to produce the
measure_error.
sample_no
: The sample number for the measurement.
error_units
: The units of the error.
If sf
= TRUE
, an sf
object is returned instead, with the same
columns plus a "geometry" column that contains the spatial data.
Bethany Allen
Christopher D. Dean
External data:
def_drilling_sites()
,
def_measurements()
,
get_eodp()
,
get_fossils()
# Return measurements based on their specific IDs
ex1 <- get_measurements(measure_id = c(353, 354))
# Return measurements based on the ID of a specific measurement definition
ex2 <- get_measurements(measurement_id = 42)
# Return measurements for a specific measurement type
ex3 <- get_measurements(measurement = "SiO2")