enmSdmX (version 1.2.12)

getCRS: WKT string for a named coordinate reference system or a spatial object

Description

Retrieve the Well-Known text string (WKT2) for a coordinate reference system (CRS) by name or from a spatial object. The most common usage of the function is to return the WKT2 string using an easy-to-remember name. For example, getCRS('wgs84') returns the WKT2 string for the WGS84 datum. To get a table of strings, just use getCRS().

Usage

getCRS(x = NULL, nice = FALSE, warn = TRUE)

Value

A string representing WKT2 (well-known text) object or a data.frame.

Arguments

x

This can be any of:

• Name of CRS: Each CRS has at least one "alias", which appears in the table returned by getCRS(). You can use any of the aliases to refer to a CRS. Within the function, spaces, case, and dashes in aliases are ignored, but to help make the aliases more memorable, the aliases include them.

• NULL (default): This returns a table of projections with their aliases (nearly the same as data(crss)).

• An object of class SpatVector, SpatRaster, or sf. If this is a "Spat" or "G" object, then a character vector with the CRS in WKT form is returned. If a sf is supplied, then a crs object is returned in WKT format.

nice

If TRUE, then print the CRS in a formatted manner and return it invisibly. Default is FALSE.

warn

If TRUE (default), then print a warning if the name of the CRS cannot be found.

Examples

# view table of available CRSs
getCRS()

# get specific WKT2 strings
getCRS('WGS84')
getCRS('Mollweide')
getCRS('WorldClim')

# WKT2 strings nice for your eyes
getCRS('WGS84', TRUE)

data(mad0)
getCRS(mad0)