wk_crs_inherit

wk_crs_longlat

wk_crs_auto

wk_crs_auto_value

The CRS handling in the wk package requires two sentinel CRS values.
The first, <code>wk_crs_inherit()</code>, signals that the vector should inherit
a CRS of another vector if combined. This is useful for empty, <code>NULL</code>,
and/or zero-length geometries. The second, <code>wk_crs_auto()</code>, is used
as the default argument of <code>crs</code> for constructors so that zero-length
geometries are assigned a CRS of <code>wk_crs_inherit()</code> by default.

Provides a minimal R and C++ API for parsing
well-known binary and well-known text representation of
geometries to and from R-native formats.
Well-known binary is compact
and fast to parse; well-known text is human-readable
and is useful for writing tests. These formats are
useful in R only if the information they contain can be
accessed in R, for which high-performance functions
are provided here.

Dewey Dunnington

Lightweight Well-Known Geometry Parsing

Edzer Pebesma

Anthony North

wk_crs_inherit function

<dl><dt>crs</dt>
<dd>A value for the coordinate reference system supplied by
the user.</dd>
<dt>x</dt>
<dd>A raw input to a construuctor whose length and crs attributte
is used to determine the default CRS returned by <code>wk_crs_auto()</code>.</dd></dl>

Arguments

Special CRS values — wk_crs_inherit

<dl>

<dt>crs</dt>
<dd>A value for the coordinate reference system supplied by
the user.</dd>


<dt>x</dt>
<dd>A raw input to a construuctor whose length and crs attributte
is used to determine the default CRS returned by <code>wk_crs_auto()</code>.</dd>

</dl>

wk_crs_inherit: Special CRS values

Description

Usage

Arguments

Examples