[Qgis-developer] New GRASS plugin: a test drive

Radim Blazek radim.blazek at gmail.com
Mon Oct 12 08:12:21 PDT 2015

On Mon, Oct 12, 2015 at 12:17 PM, m roy <royroge at outlook.com> wrote:
> Il 12/10/2015 10.06, Radim Blazek ha scritto:
>> The user must have some minimum knowledge about GRASS topological
>> model. Note that 'Add Area' makes only sense for isolated areas,
>> common boundaries of adjacent areas must be digitized by 'Add
>> Boundary' because the boundary is shared by areas on both sides.
>> Radim
> I think that the QGIS "Add Area" should be renamed to "Add closed boundary"
> (or something like that) because GRASS has the "Add Area" tool that in fact
> allow you to add boundary and centroid in one go;

OK, if I don't manage to add centroid placement.

> another issue I discovered while testing QGIS digitizer with GRASS vectors
> is that there is no difference between node and vertex, in GRASS they have
> two different "topological meaning"; as it is now you can't tell
> where to connect with a new boundary because of this.

I think that the cleanest way to get nodes displayed will be to add
first/last vertex marker line symbol in boundaries style, which you
can try immediately if you change 'GRASS Edit' style.


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