is.lonlat,character-method

is.lonlat

is.lonlat,GLocation-method

is.lonlat,sf-method

<code>is.lonlat()</code> attempts to determine if a coordinate reference system is unprojected (e.g., WGS84, NAD83, NAD27, etc.). For <code>GRaster</code>s and <code>GVector</code>s, the function should always be correct. For WKT character strings and <code>sf</code> vectors, it does this by looking for the "CONVERSION[" tag in the WKT string (or the object's WKT string), and if it finds one, returns <code>FALSE</code>. This may not be truthful in all cases.

Processing of large-in-memory/large-on disk rasters and spatial
vectors using 'GRASS GIS' <https://grass.osgeo.org/>. Most functions in
the 'terra' package are	recreated. Processing of medium-sized and smaller
spatial objects will nearly always be faster using 'terra' or 'sf', but
for large-in-memory/large-on-disk objects, 'fasterRaster' may be faster.
To use most of the functions, you must have the stand-alone version (not
the 'OSGeoW4' installer version) of 'GRASS GIS' 8.0 or higher.

Adam B. Smith

fasterRaster

Faster Raster and Spatial Vector Processing Using 'GRASS GIS'

is.lonlat,character-method function

<dl><dt>x</dt>
<dd>A WKT coordinate reference string or an object from which on can be obtained (e.g., a <code>GRaster</code>, <code>GVector</code>, <code>GRegion</code>, <code>GLocation</code>, <code>SpatRaster</code>, <code>SpatVector</code>, or <code>sf</code> object).</dd></dl>

Arguments

Test if a coordinate reference system is unprojected — is.lonlat,character-method

<dl>

<dt>x</dt>
<dd>A WKT coordinate reference string or an object from which on can be obtained (e.g., a <code>GRaster</code>, <code>GVector</code>, <code>GRegion</code>, <code>GLocation</code>, <code>SpatRaster</code>, <code>SpatVector</code>, or <code>sf</code> object).</dd>

</dl>

is.lonlat,character-method: Test if a coordinate reference system is unprojected

Description

Usage

Value

Arguments

See Also