Re: [GRASS-user] Dissolve polygones from layer1 witch intersect with polygones of layer2

On Tue, Nov 29, 2016 at 4:01 PM, Mounirsky wrote: > > I'm trying to automatize geoprocessing tools using grass command lines in a > python script, > so in the case of an isolate polygon (don't overlap) it will not be added in > may original vector... ! > I want it to work in

Re: [GRASS-user] Dissolve polygones from layer1 witch intersect with polygones of layer2

I'm trying to automatize geoprocessing tools using grass command lines in a python script, so in the case of an isolate polygon (don't overlap) it will not be added in may original vector... ! I want it to work in any case and because I'm ruining command lines so I can't make tests (overlaps or

Re: [GRASS-user] Dissolve polygones from layer1 witch intersect with polygones of layer2

On Mon, Nov 28, 2016 at 3:37 PM, Mounirsky wrote: > > I want to dissolve polygons from layer1 witch overlap with polygons of layer2 > keeping attributes table of layer1 and using command line. > > What I've done : > > v.in.ogr -o input=original_plygons output=layer1 > >

[GRASS-user] Dissolve polygones from layer1 witch intersect with polygones of layer2

I want to dissolve polygons from layer1 witch overlap with polygons of layer2 keeping attributes table of layer1 and using command line. What I've done : v.in.ogr -o input=original_plygons output=layer1 v.in.ogr -o input=plygons_to_add output=layer2 v.patch -a input=layer2 output=layer1

Re: [GRASS-user] Dissolve and sum field

On 10/30/2012 03:31 AM, Phil Donovan wrote: How does one dissolve and sum a field in GRASS? I guess one way would be to create a separate table of summed values and then join them back to the new dissolved layer? How would you create this table of summed values?

[GRASS-user] Dissolve and sum field

How does one dissolve and sum a field in GRASS? I guess one way would be to create a separate table of summed values and then join them back to the new dissolved layer? How would you create this table of summed values? __ *Example table:* Dissolve Column|

[GRASS-user] Dissolve lines

Dear list: I have a vector map layer with 63 lines and I would like to have only one line made of those 63. So, I would like to ask you which is the best way to dissolve lines of a single layer map. I tried with v.dissolve, but the result it’s not the expected. Thank you!!! Paco.

[GRASS-user] dissolve

...and keep table data Hi, I am going to merge some vector areas sharing a common value. I want to keep the information in my table, but I can't find a way to stamp out the desired areas and replace them with desired information. Is there something like union touching areas and keep information

Re: [GRASS-user] dissolve

Ok. I did it with: v.extract: extracting the areas I dont want to merge v.overlay: union the extracted with the dissolved rest so I keep the information of the not-to-be-merged areas. Only thing is, that I have to generate some new information for the dissolved areas. In this case its not that

[GRASS-user] dissolve and multipolygon(1) convert polygon to points(centroid) (2)

Hello all. I have two problems. 1) v.dissolve? it is possible to dissolve the polygons (nonadjacent) who have the same attribute obtaining a multipolygon? 2) v.type I noticed that to get points (representing the centroid) from polygons must change the order by hand ... type = point, centroid