## DESCRIPTION

r.quantile computes quantiles in a manner suitable for use with large amounts of data. It is using two passes.

## EXAMPLE

Calculation of elevation quantiles (printed to standard-out):

    g.region rast=elevation -p
    r.quantile input=elevation percentiles=0.1,1,10,25,50,75,90,99,99.9

The output of r.quantile can be used for quantile classification:

    g.region rast=elevation -p
    r.quantile elevation quantiles=5 -r --quiet | r.recode elevation \
               out=elev_quant5 rules=-

## SEE ALSO

r.quant

## AUTHOR

Glynn Clements

Last changed: $Date$