[GRASS-user] vector layer labelling doesn't work....

[Michael Barton]

On Aug 8, 2008, at 8:33 AM, <grass-user-request at lists.osgeo.org> wrote:

> Date: Fri, 8 Aug 2008 17:13:28 +0200
> From: "Martin Landa" <landa.martin at gmail.com>
> Subject: Re: [GRASS-user] vector layer labelling doesn't work....
> To: "G. Allegri" <giohappy at gmail.com>
> Cc: grassuser <grass-user at lists.osgeo.org>
> Message-ID:
> 	<f8fe65c40808080813k66635c86t78e7b23225ebc761 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi,
>
> 2008/8/8 G. Allegri <giohappy at gmail.com>:
>> Anyway I will change in my build :-)
>>
>> gui/tcltk/gis.m/vector.tcl - Line 143:
>> set opt($count,1,type_centroid) 0 -> set opt($count, 
>> 1,type_centroid) 1
>
> in wxGUI it takes default d.vect type options, so
> "point,line,boundary,centroid,area,face". Not sure why TCL/TK differs
> here.

The wxPython GUI uses the default, autogenerated GUI as a properties  
dialog. There are definite maintenance advantages to doing this, which  
is why we've done it. But it means that it comes up with whatever are  
the defaults for the module command.

The TclTk GUI has a custom coded properties window for each d.*  
command, meaning it does not have to use the command line defaults. In  
TclTk, I turned displaying the centroids off by default because they  
are really annoying and ugly in areas unless you have specific need to  
see them (just like direction is turned off in lines an boundaries).

If it is needed, I can add code to turn on centroids when area  
labeling is turned on in TclTk. But a better solution IMHO is to fix  
d.vect so that it is not *necessary* to have centroids showing in  
order to display labels for areas.

Michael