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i.signatures(1grass) GRASS GIS User's Manual i.signatures(1grass)

i.signatures - Manage imagery classification signature files

imagery, classification, signatures

i.signatures
i.signatures --help
i.signatures [-p] [type=name] format=name [mapset=name[,name,...]] [remove=name[,name,...]] [rename=from,to[,from,to,...]] [copy=from,to[,from,to,...]] [--help] [--verbose] [--quiet] [--ui]


Print signature files

Print usage summary

Verbose module output

Quiet module output

Force launching GUI dialog


Type of signature file
Options: sig, sigset, libsvm

Output format
Options: plain, json
Default: plain
plain: Plain text output
json: JSON (JavaScript Object Notation)

Name of mapset to list
Default: current search path

Name of file(s) to remove

Name of file to rename

Name of file to copy

i.signatures module allows managing signature files:

  • "sig" – generated by i.gensig for i.maxlik
  • "sigset" – generated by i.gensigset for i.smap
The module can perform multiple actions per run. The order of execution is "copy", "remove", "rename". When the print flag is specified without specifying any type of signature files, it would print all signatures grouped by type.

By default the module will list signature files from all mapsets in the current search path. It is possible to limit listing only to a single mapset by providing the "mapset" option. The mapset can be also not listed in the current search path.
Actions "remove" and "rename" operate only on the current mapset (although accept fully qualified names). The "copy" action will accept a signature file name from any mapset as its first argument (source file to copy).

Print names of all signature files: 

i.signatures -p

Print only signature files of certain type as a JSON: 

i.signatures -p type=sigset format=json

Delete signature file called "foo" of type "sig" (i.gensig / i.maxlik). 

i.signatures remove=foo type=sig

Copy signature file "bar" from mapset "baz" to current mapset 

i.signatures copy=bar@baz,best_version type=sigset

i.gensig i.gensigset

Maris Nartiss

Available at: i.signatures source code (history)

Accessed: Monday Feb 24 17:51:38 2025

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© 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual

GRASS 8.4.1