raster: crosstab – R documentation

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crosstab

Cross-tabulate

Description

Cross-tabulate two RasterLayer objects, or mulitiple layers in a RasterStack or RasterBrick to create a contingency table.

Usage

## S4 method for signature 'Raster,Raster'
crosstab(x, y, digits=0, long=FALSE, useNA=FALSE, progress='', ...)

## S4 method for signature 'RasterStackBrick,missing'
crosstab(x, digits=0, long=FALSE, useNA=FALSE, progress='', ...)

Arguments

`x`	Raster* object
`y`	Raster* object if `x` is a RasterLayer; Can be missing if `x` is a RasterStack or RasterBrick
`digits`	integer. The number of digits for rounding the values before cross-tabulation
`long`	logical. If `TRUE` the results are returned in 'long' format data.frame instead of a table
`useNA`	logical, indicting if the table should includes counts of `NA` values
`progress`	character. "text", "window", or "" (the default, no progress bar), only for large files that cannot be processed in one step
`...`	additional arguments. none implemented

Value

A table or data.frame

Examples

r <- raster(nc=5, nr=5)
values(r) <- runif(ncell(r)) * 2
s <- setValues(r, runif(ncell(r)) * 3)
crosstab(r,s)

rs <- r/s
r[1:5] <- NA
s[20:25] <- NA
x <- stack(r, s, rs)
crosstab(x, useNA=TRUE, long=TRUE)

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