## DESCRIPTION

db.univar calculates basic univariate statistics for numeric attributes in a data table. It will calculate minimum, maximum, range, mean, standard deviation, variance, coefficient of variation, quartiles, median, and 90th percentile. It uses db.select to create list values for statistical calculations. NOTES If the database and driver are not specified, the default values set in db.connect will be used.

## EXAMPLE

In this example, random points are sampled from the elevation map (North Carolina sample dataset) and univariate statistics performed:

    g.region raster=elevation -p
    v.random output=samples n=100
    v.db.addtable samples column="heights double precision"
    v.what.rast samples raster=elevation column=heights
    v.db.select samples

    db.univar samples column=heights

## SEE ALSO

v.db.univar, r.univar, v.univar, db.select, d.vect.thematic

## AUTHOR

Michael Barton, Arizona State University

and authors of r.univar.sh

Last changed: $Date: 2016-11-14 00:05:32 +0100 (Mon, 14 Nov 2016) $