hist function

Histogram

Create a histogram of the values of a SpatRaster. For large datasets a sample of maxcell is used. methods

## S4 method for signature 'SpatRaster'
hist(x, layer, maxcell=1000000, plot=TRUE, maxnl=16, main, ...)

Arguments

• x: SpatRaster
• layer: positive integer or character to indicate layer numbers (or names). If missing, all layers up to maxnl are used
• maxcell: integer. To regularly sample very large objects
• plot: logical. Plot the histogram or only return the histogram values
• maxnl: positive integer. The maximum number of layers to use. Ignored if layer is not missing
• main: character. Main title(s) for the plot. Default is the value of names
• ...: additional arguments. See hist

Returns

This function is principally used for plotting a histogram, but it also returns an object of class "histogram" (invisibly if plot=TRUE).

See Also

pairs, boxplot

Examples

r1 <- r2 <- rast(nrows=50, ncols=50)
values(r1) <- runif(ncell(r1))
values(r2) <- runif(ncell(r1))
rs <- r1 + r2
rp <- r1 * r2

opar <- par(no.readonly =TRUE)
par(mfrow=c(2,2))
plot(rs, main='sum')
plot(rp, main='product')
hist(rs)
a <- hist(rp)
a
x <- c(rs, rp, sqrt(rs))
hist(x)
par(opar)