quantile function

Quantiles of spatial data

Compute quantiles for each cell across the layers of a SpatRaster.

You can use use global(x, fun=quantile) to instead compute quantiles across cells for each layer.

You can also use this method to compute quantiles of the numeric variables of a SpatVector. methods

## S4 method for signature 'SpatRaster'
quantile(x, probs=seq(0, 1, 0.25), na.rm=FALSE, filename="", ...) 

## S4 method for signature 'SpatVector'
quantile(x, probs=seq(0, 1, 0.25), ...)

Arguments

• x: SpatRaster or SpatVector
• probs: numeric vector of probabilities with values in [0,1]
• na.rm: logical. If TRUE, NA's are removed from x before the quantiles are computed
• filename: character. Output filename
• ...: additional arguments for writing files as in writeRaster

Returns

SpatRaster with layers representing quantiles

See Also

app

Examples

r <- rast(system.file("ex/logo.tif", package="terra"))   
rr <- c(r/2, r, r*2)
qr <- quantile(rr)
qr

## Not run:

# same but slower
qa <- app(rr, quantile)
## End(Not run)

#quantile by layer instead of by cell
qg <- global(r, quantile)