ОПИСАНИЕ

v.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. (GRASS Shell Script)

ПРИМЕЧАНИЯ

Unless the database and driver are specified, it default the values set in db.connect.

ПРИМЕР

g.region rast=elevation.10m -p
v.random out=samples n=100
v.db.addtable samples col="heights double precision"
v.what.rast samples rast=elevation.10m col=heights
v.db.select samples

v.db.univar samples col=heights

СМ. ТАКЖЕ

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

АВТОР

Michael Barton, Arizona State University

and authors of r.univar.sh

Last changed: $Date: 2007-06-23 15:41:37 -0500 (Сб, 23 июн 2007) $

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