.check_raster

This function checks the input object to ensure
it is a valid raster object or a character path to a raster file.
It also provides warnings and informative messages based on the input type.

internal

Geospatial data computation is parallelized by grid, hierarchy,
or raster files. Based on 'future' (Bengtsson, 2024 <doi:10.32614/CRAN.package.future>)
and 'mirai' (Gao et al., 2025 <doi:10.32614/CRAN.package.mirai>) parallel back-ends,
'terra' (Hijmans et al., 2025 <doi:10.32614/CRAN.package.terra>) and
'sf' (Pebesma et al., 2024 <doi:10.32614/CRAN.package.sf>)
functions as well as convenience functions in the package can be distributed
over multiple threads. The simplest way of parallelizing generic geospatial
computation is to start from par_pad_*() functions to par_grid(),
par_hierarchy(), or par_multirasters() functions. Virtually any functions
accepting classes in 'terra' or 'sf' packages can be used in the three
parallelization functions. A common raster-vector overlay operation
is provided as a function extract_at(), which uses
'exactextractr' (Baston, 2023 <doi:10.32614/CRAN.package.exactextractr>), with
options for kernel weights for summarizing raster values at vector geometries.
Other convenience functions for vector-vector operations including
simple areal interpolation (summarize_aw()) and summation of
exponentially decaying weights (summarize_sedc()) are also provided.

Insang Song

chopin

Spatial Parallel Computing by Hierarchical Data Partitioning

Kyle Messier

Alec L. Robitaille

Eric R. Scott

.check_raster function

<dl><dt>input</dt>
<dd>The input object to be checked. It can be either
a SpatRaster object or a character path to a raster file.</dd>
<dt>extent</dt>
<dd>The extent of the raster. Defaults to NULL.
Numeric vector should be put in order of
<code>c(xmin, xmax, ymin, ymax)</code>.</dd>
<dt>...</dt>
<dd>Placeholder.</dd></dl>

Arguments

Check Raster Input — .check_raster

<dl>

<dt>input</dt>
<dd>The input object to be checked. It can be either
a SpatRaster object or a character path to a raster file.</dd>


<dt>extent</dt>
<dd>The extent of the raster. Defaults to NULL.
Numeric vector should be put in order of
<code>c(xmin, xmax, ymin, ymax)</code>.</dd>


<dt>...</dt>
<dd>Placeholder.</dd>

</dl>

.check_raster: Check Raster Input

Description

Usage

Value

Arguments