s.voronoi can be run either non-interactively or interactively. The program will be run non-interactively if the user specifies the name of an existing site list file and a name for a vect file, using the form
s.voronoi [-aq] sites=name1 vect=name2 catnum=optCatnum labels=optLabel
where name1 is the name of an existing site list file and name2 is the name of vector output file. optCatnum can be "keep" only if the site file category number is integer. optLabel can be "no", no labels, "cat", use site file category number as label, str,num, use the num string type field of the site file as label, dec,num, use the num decimal type field of the site file as label.
Alternately, the user can simply type s.voronoi on the command line, without program arguments. In this case, the user will be prompted for parameter values using the standard GRASS parser interface described in the manual entry for parser.
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