Execute ( -e) actions

Several simple ``special actions'' are available in (``linked into'') gstat. They are invoked as

gstat -e action arguments

and are strictly controlled by command line options and arguments. A list of available actions is obtained by calling

gstat -e

and usage for each action is printed after running

gstat -e action

without arguments. Following is a list of available actions:

cover out_map in_map1 in_map2 ...

cover several input maps into the output map: substitute in out_map the missing values of in_map1 with the first non-missing value found in subsequent input maps, on a cell-by-cell basis

convert

Converts grid map file from one format to another (minimal converter)

nominal out_map in_map0 in_map1 ... in_mapn

from multiple input grid map files write in each grid cell of out_map the number of the first map with a non-zero value in that grid cell (a value in $[0,...,n]$)

map2gif

convert grid map file to gif file. The gif library used to generate gif's from maps is not distributed as part of the gstat distribution; see http://www.boutell.com/gd/

semivariogram

calculate sample variogram, using command line interface

covariogram

calculate sample covariogram, using command line interface

semivariance

print semivariance table for a variogram model

covariance

print covariance table for a variogram model

statistics

output summary statistics for values read from one or more files (for each file: min, max, median, quantiles, mean, standard deviation, n)