def_measurements {rmacrostrat} | R Documentation |
A function to retrieve the definitions of different measurements that are included in the Macrostrat database. By default, all definitions are returned.
def_measurements(
measure_id = NULL,
measurement_type = NULL,
measurement_class = NULL
)
measure_id |
|
measurement_type |
|
measurement_class |
|
A data.frame
containing the following columns:
measure_id
: The unique identification number of the
measurement.
name
: The name of the measurement.
type
: Measurement type, less inclusive than class
class
: Measurement class, more inclusive than type.
t_units
: The total number of Macrostrat units containing this
measurement.
William Gearty
Christopher D. Dean
External data:
def_drilling_sites()
,
get_eodp()
,
get_fossils()
,
get_measurements()
Geologic features and attributes:
def_econs()
,
def_environments()
,
def_grain_sizes()
,
def_lithologies()
,
def_lithology_att()
,
def_minerals()
,
def_structures()
# Return all definitions
ex1 <- def_measurements()
# Return subsets of definitions
ex2 <- def_measurements(measure_id = c(1, 2, 4))
ex3 <- def_measurements(measurement_class = "geochemical")