[GRASS-user] Digitizing in GRASS::change the shape of a polygon - help needed

GRASS GRASS user
,
1

Dear GRASS-users,
I need to modify an existing polygon-theme in GRASS/QGIS: some areas have to be changed in size. Within the digitize-module of QGIS, I used the tool "Move element" and "Add new boundary". However, I was not able to close the polygon again (it is still drawn in red, not in green). Therefore, I would be very glad for some general hints about digitizing in GRASS!

Best,
Wolfgang
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2

Wolfgang Qual wrote:
[...]

I was not able to close the polygon again (it is still drawn in red,
not in green). Therefore, I would be very glad for some general hints
about digitizing in GRASS!

Hi Wolfgang -
I have recently used v.digit for the first time (in Grass 6.0.1).
I had similar problems. Changing the snapping threshold did not work for me. I just had to zoom in close enough instead.
I then switched to digitising with the Grass plugin of Qgis, because there I could zoom with the mouse wheel during vertex input.

-- Robert

3

Wolfgang Qual wrote:

Dear GRASS-users, I need to modify an existing polygon-theme in
GRASS/QGIS: some areas have to be changed in size. Within the
digitize-module of QGIS,

Do you mean v.digit?

I used the tool "Move element" and "Add new
boundary". However, I was not able to close the polygon again (it is
still drawn in red, not in green). Therefore, I would be very glad
for some general hints about digitizing in GRASS!

In QGIS such operations (if I correctly understand what you mean) work
OK for me.

Regards,
Maciek