srs_is_same: Do these two spatial references describe the same system?

In gdalraster: Bindings to the 'Geospatial Data Abstraction Library' Raster API

Do these two spatial references describe the same system?

Description

srs_is_same() returns TRUE if these two spatial references describe the same system. This is a wrapper for OSRIsSame() in the GDAL Spatial Reference System C API.

Usage

srs_is_same(
  srs1,
  srs2,
  criterion = "",
  ignore_axis_mapping = FALSE,
  ignore_coord_epoch = FALSE
)

Arguments

srs1	Character string. OGC WKT for a spatial reference system.
srs2	Character string. OGC WKT for a spatial reference system.
criterion	Character string. One of STRICT, EQUIVALENT, EQUIVALENT_EXCEPT_AXIS_ORDER_GEOGCRS. Defaults to EQUIVALENT_EXCEPT_AXIS_ORDER_GEOGCRS.
ignore_axis_mapping	Logical scalar. If TRUE, sets IGNORE_DATA_AXIS_TO_SRS_AXIS_MAPPING=YES in the call to OSRIsSameEx() in the GDAL Spatial Reference System API. Defaults to NO.
ignore_coord_epoch	Logical scalar. If TRUE, sets IGNORE_COORDINATE_EPOCH=YES in the call to OSRIsSameEx() in the GDAL Spatial Reference System API. Defaults to NO.

Value

Logical. TRUE if these two spatial references describe the same system, otherwise FALSE.

See Also

srs_is_geographic(), srs_is_projected()

Examples

elev_file <- system.file("extdata/storml_elev.tif", package="gdalraster")
ds <- new(GDALRaster, elev_file, TRUE)
srs_is_same(ds$getProjectionRef(), epsg_to_wkt(26912))
srs_is_same(ds$getProjectionRef(), epsg_to_wkt(5070))
ds$close()

gdalraster documentation built on April 4, 2025, 4:38 a.m.