search

grass-svn2git / grass-issues-test

0 stars 0 forks source link

d.legend: option to get info from stdin instead of raster #1

Open grass-svn2git opened 5 years ago

grass-svn2git commented 5 years ago

Reported by hamish on 11 Mar 2008 12:06 UTC this was code wish # 391 over on the old gforge tracker. moving it here. http://wald.intevation.org/tracker/index.php?func=detail&aid=391&group_id=21&atid=188

Hamish

Hi,

It would be nice if d.legend could look for "map=-" and if so take legend cat and color info from stdin. That way vector maps and custom legends could be made without resorting to tricks like making a dummy raster file to hold that info. [see v.colors addon script]

If data is fed from stdin (signaled by map=-) create categorical legend using that data. Data format: "cat|label|color"

e.g.

d.legend -m map="-" <<EOF
1|Main Street|255:0:0
2|Elm Street|0:255:0
3|Old Coach Road|0:0:255
EOF

In this way d.legend could work as a system module by the GUI instead of a user module, and be useful for non-raster tasks too.

see expanded thread on the -dev mailing list: http://thread.gmane.org/gmane.comp.gis.grass.devel/19852/focus=19952

Hamish

Migrated-From: https://trac.osgeo.org/grass/ticket/89

grass-svn2git commented 5 years ago

Modified by hamish on 8 May 2009 10:22 UTC

grass-svn2git commented 5 years ago

Comment by @wenzeslaus on 31 Aug 2018 02:16 UTC This would be similar to what https://grass.osgeo.org/grass77/manuals/d.legend.vect supports (input option). .html