barplot: Bar plot of a SpatRaster

In terra: Spatial Data Analysis

Bar plot of a SpatRaster

Description

Create a barplot of the values of 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

See Also

hist, boxplot

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 documentation built on Oct. 14, 2024, 5:07 p.m.