[GRASS-dev] [GRASS GIS] #89: d.legend: option to get info from stdin instead of raster

[Michael Barton]

On Mar 11, 2008, at 8:10 AM, grass-dev-request at lists.osgeo.org wrote:

> Date: Tue, 11 Mar 2008 12:06:17 -0000
> From: "GRASS GIS" <trac at osgeo.org>
> Subject: [GRASS-dev] [GRASS GIS] #89: d.legend: option to get info
> 	from stdin instead of raster
> To: undisclosed-recipients:;
> Message-ID: <040.f21e419e269e8aaf50aef6d63372318e at osgeo.org>
> Content-Type: text/plain; charset="utf-8"
>
> #89: d.legend: option to get info from stdin instead of raster
> ------------------------- 
> +--------------------------------------------------
>  Reporter:  hamish       |       Owner:  grass-dev at lists.osgeo.org
>      Type:  enhancement  |      Status:  new
>  Priority:  minor        |   Milestone:  6.4.0
> Component:  default      |     Version:  unspecified
>  Keywords:               |
> ------------------------- 
> +--------------------------------------------------
>  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

Ironically, I'm stuck in the" North Carolina data set" with a plane  
delay after a stint in Washington. But have a chance to catch up on  
email.

This is an excellent idea BUT please don't limit it to stdin. Allow  
this to be a load from file option so that it can be used from the  
GUI too.

Michael