raster_by_poly

Overlay a SpatialPolygonsDataFrame or sf polygons layer on a raster layer
and clip the raster to each polygon. Optionally done in parallel

Various layers of B.C., including administrative boundaries,
natural resource management boundaries, census boundaries etc. All
layers are available in BC Albers
(<https://spatialreference.org/ref/epsg/3005/>) equal-area projection,
which is the B.C. government standard. The layers are sourced from the
British Columbia and Canadian government under open licenses,
including B.C. Data Catalogue (<https://data.gov.bc.ca>), the
Government of Canada Open Data Portal
(<https://open.canada.ca/en/using-open-data>), and Statistics Canada
(<https://www.statcan.gc.ca/en/reference/licence>).

Andy Teucher

bcmaps

Map Layers and Spatial Utilities for British Columbia

Sam Albers

Stephanie Hazlitt

Province of British Columbia 

raster_by_poly function

<dl><dt>raster_layer</dt>
<dd>the raster layer</dd>
<dt>poly</dt>
<dd>a <code>SpatialPolygonsDataFrame</code> layer or <code>sf</code> layer</dd>
<dt>poly_field</dt>
<dd>the field on which to split the <code>SpatialPolygonsDataFrame</code></dd>
<dt>summarize</dt>
<dd>Should the function summarise the raster values in each
polygon to a vector? Default <code>FALSE</code></dd>
<dt>parallel</dt>
<dd>process in parallel? Default <code>FALSE</code>. If <code>TRUE</code>, it is up to
the user to call <code><a href="https://future.futureverse.org/reference/plan.html">future::plan()</a></code> (or set <a href="https://future.futureverse.org/reference/future.options.html">options</a>)
to specify what parallel strategy to use.</dd></dl>

Arguments

Overlay a SpatialPolygonsDataFrame or sf polygons layer on a raster layer
and clip the raster to each polygon. Optionally done in parallel — raster_by_poly

<dl>

<dt>raster_layer</dt>
<dd>the raster layer</dd>


<dt>poly</dt>
<dd>a <code>SpatialPolygonsDataFrame</code> layer or <code>sf</code> layer</dd>


<dt>poly_field</dt>
<dd>the field on which to split the <code>SpatialPolygonsDataFrame</code></dd>


<dt>summarize</dt>
<dd>Should the function summarise the raster values in each
polygon to a vector? Default <code>FALSE</code></dd>


<dt>parallel</dt>
<dd>process in parallel? Default <code>FALSE</code>. If <code>TRUE</code>, it is up to
the user to call <code><a href='https://future.futureverse.org/reference/plan.html'>future::plan()</a></code> (or set <a href='https://future.futureverse.org/reference/future.options.html'>options</a>)
to specify what parallel strategy to use.</dd>

</dl>

raster_by_poly: Overlay a SpatialPolygonsDataFrame or sf polygons layer on a raster layer and clip the raster to each polygon. Optionally done in parallel

Description

Usage

Value

Arguments