raster_by_poly: Overlay a SpatialPolygonsDataFrame or sf polygons layer on a...

In bcgov/bcmaps: Map Layers and Spatial Utilities for British Columbia

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

Description

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

Usage

raster_by_poly(
  raster_layer,
  poly,
  poly_field,
  summarize = FALSE,
  parallel = FALSE
)

Arguments

raster_layer	the raster layer
poly	a SpatialPolygonsDataFrame layer or sf layer
poly_field	the field on which to split the SpatialPolygonsDataFrame
summarize	Should the function summarise the raster values in each polygon to a vector? Default FALSE
parallel	process in parallel? Default FALSE. If TRUE, it is up to the user to call future::plan() (or set options) to specify what parallel strategy to use.

Value

a list of RasterLayers if summarize = FALSE otherwise a list of vectors.

bcgov/bcmaps documentation built on Oct. 26, 2024, 10:26 p.m.