[GRASS-dev] Re: grass-dev Digest, Vol 28, Issue 19

[Moritz Lennert]

On 08/08/08 18:12, Michael Barton wrote:
> 
> 
> On Aug 8, 2008, at 9:00 AM, <grass-dev-request at lists.osgeo.org> wrote:
> 
>> Date: Fri, 08 Aug 2008 17:53:48 +0200
>> From: Moritz Lennert <mlennert at club.worldonline.be>
>> Subject: [GRASS-dev] [Fwd: Re: [GRASS-user] vector layer labelling
>>     doesn't    work....]
>> To: grass-dev <grass-dev at lists.osgeo.org>
>> Message-ID: <489C6C0C.7070302 at club.worldonline.be>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> Forwarding to dev-list in case someone wants to react. Summary: in
>> vector area maps, labels are only displayed when centroids are also
>> displayed.
>>
>> Proposal: automatically display centroids, when attribute label option
>> is activated.
> 
> This is ugly for areas. 

Well, currently, if you want to display labels, you have to display the 
centroids, but you can make them points with size 1, so hardly visible...

> It would be much better to allow labels to be 
> displayed without centroids being displayed.

Then you would need a new ltype parameter to determine for which types 
of features you would like to see labels. Otherwise, in a layer (using 
new proposed terminology) mixing different types of features, GRASS 
wouldn't know for which type you want labels, since you did not need to 
activate them with the type parameter...

So, three choices:

1) We automatically activate centroids when the user choses to display 
lables. Maybe we could allow a point size of 0 to not display the 
centroid at all.

2) We add an ltype parameter.

3) We don't change anything and educate users ;-)

Moritz