polygon_to_raster: Create a raster from a polygon sf object
In JGCRI/rgis: R-based Geographic Information System (GIS) utilities

polygon_to_raster

R Documentation

Create a raster from a polygon sf object

Description

Creates a raster from a polygon sf object using the fasterize library and function which provides great improvement over raster::rasterize. See https://cran.r-project.org/web/packages/fasterize/fasterize.pdf

Usage

polygon_to_raster(
  sf,
  raster,
  field = NULL,
  fun,
  background = NA_real_,
  by = NULL
)

Arguments

`sf`	an sf::sf() object with a geometry column of POLYGON and/or MULTIPOLYGON objects
`raster`	A raster object. Used as a template for the raster output. Can be created with raster::raster()
`field`	character. The name of a column in sf, providing a value for each of the polygons rasterized. If NULL (default), all polygons will be given a value of 1
`fun`	character. The name of a function by which to combine overlapping polygons. Currently takes "sum", "first", "last", "min", "max", "count", or "any". Future versions may include more functions or the ability to pass custom R/C++ functions. If you need to summarize by a different function, useby= to get a RasterBrick and then raster::stackApply() or raster::calc() to summarize
`background`	numeric. Value to put in the cells that are not covered by any of the features of x. Default is NA.
`by`	character. The name of a column in sf by which to aggregate layers. If set, fasterize will return a RasterBrick with as many layers as unique values of the by column