raster: cellsFromExtent – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

cellsFromExtent

Cells from extent, and vice versa

Description

cellsFromExtent returns the cell numbers for a Raster* object that are within a specfied extent (rectangular area), supply an object of class Extent, or another Raster* object.

extentFromCells returns an Extent object from a Raster* object and cell numbers. All cells are within the returned Extent.

Usage

cellsFromExtent(object, extent, expand=FALSE)
extentFromCells(object, cells)

Arguments

`object`	A Raster* object
`extent`	An object of class Extent (which you can create with newExtent(), or another Raster* object )
`expand`	Logical. If `TRUE`, `NA` is returned for (virtual) cells implied by `bndbox`, that are outside the RasterLayer (`object`). If `FALSE`, only cell numbers for the area where `object` and `bndbox` overlap are returned (see intersect)
`cells`	numeric. A vector of cell numbers

Value

a vector of cell numbers

Examples

r <- raster()
bb <- extent(-5, 5, -5, 5)
cells <- cellsFromExtent(r, bb)
r <- crop(r, bb)
values(r) <- cells

e <- extentFromCells(r, 50:55)

raster

Geographic Data Analysis and Modeling

v3.4-10

GPL (>= 3)

Authors

Robert J. Hijmans [cre, aut] (<https://orcid.org/0000-0001-5872-2872>), Jacob van Etten [ctb], Michael Sumner [ctb], Joe Cheng [ctb], Dan Baston [ctb], Andrew Bevan [ctb], Roger Bivand [ctb], Lorenzo Busetto [ctb], Mort Canty [ctb], Ben Fasoli [ctb], David Forrest [ctb], Aniruddha Ghosh [ctb], Duncan Golicher [ctb], Josh Gray [ctb], Jonathan A. Greenberg [ctb], Paul Hiemstra [ctb], Kassel Hingee [ctb], Institute for Mathematics Applied Geosciences [cph], Charles Karney [ctb], Matteo Mattiuzzi [ctb], Steven Mosher [ctb], Babak Naimi [ctb], Jakub Nowosad [ctb], Edzer Pebesma [ctb], Oscar Perpinan Lamigueiro [ctb], Etienne B. Racine [ctb], Barry Rowlingson [ctb], Ashton Shortridge [ctb], Bill Venables [ctb], Rafael Wueest [ctb]

Initial release

2021-05-02