terra: barplot – R documentation

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barplot

Bar plot of a SpatRaster

Description

Create a barplot of the values of a the first layer of a SpatRaster. For large datasets a regular sample with a size of approximately maxcells is used.

Usage

## S4 method for signature 'SpatRaster'
barplot(height, maxcell=1000000, digits=0, breaks=NULL, col, ...)

Arguments

`height`	SpatRaster
`maxcell`	integer. To regularly subsample very large datasets
`digits`	integer used to determine how to `round` the values before tabulating. Set to `NULL` or to a large number if you do not want any rounding
`breaks`	breaks used to group the data as in `cut`
`col`	a color generating function such as `rainbow` (the default), or a vector of colors
`...`	additional arguments for plotting as in `barplot`

Value

A numeric vector (or matrix, when beside = TRUE) of the coordinates of the bar midpoints, useful for adding to the graph. See barplot

Examples

f <- system.file("ex/elev.tif", package="terra")
r <- rast(f)
barplot(r, digits=-1, las=2, ylab="Frequency")

op <- par(no.readonly = TRUE)
par(mai = c(1, 2, .5, .5))
barplot(r, breaks=10, col=c("red", "blue"), horiz=TRUE, digits=NULL, las=1)
par(op)

terra

Spatial Data Analysis

v1.2-10

GPL (>= 3)

Authors

Robert J. Hijmans [cre, aut] (<https://orcid.org/0000-0001-5872-2872>), Roger Bivand [ctb] (<https://orcid.org/0000-0003-2392-6140>), Karl Forner [ctb], Jeroen Ooms [ctb] (<https://orcid.org/0000-0002-4035-0289>), Edzer Pebesma [ctb] (<https://orcid.org/0000-0001-8049-7069>)

Initial release

2021-05-12