290 reputation
29
bio website
location Greece
age
visits member for 1 year, 5 months
seen 6 hours ago
stats profile views 22

Who

ToDo

  • Ask questions!

  • Try to answer questions...

Thinking

Acting

  • ...

Interested in


May
19
revised r.mapcalculator and python again
minor formatting improvement
May
19
revised How to use QgsOverlayAnalyzer class in pyQGIS?
minor formatting improvement
May
19
suggested suggested edit on How to use QgsOverlayAnalyzer class in pyQGIS?
May
19
suggested suggested edit on r.mapcalculator and python again
May
19
comment run r.stats as a quiet module in GRASS-Python script
Despite the original question being "old", it is still a valid one.
May
19
answered run r.stats as a quiet module in GRASS-Python script
May
17
comment How to make the layer 2 use the same vector categories from layer 1?
O-K, the correct sequence is to transfer/add layer categories using v.category with option=transfer and then, (re-)connect the attribute table of interest in the layer of interest, e.g. by using v.db.connect and layer=2. Check out this grass-dev thread.
May
17
comment How to make the layer 2 use the same vector categories from layer 1?
And because I was too fast (1st, this is an old question, 2nd you want to use the cats from layer 1): I guess it is not that easy after all!
May
17
comment How to make the layer 2 use the same vector categories from layer 1?
You need to populate the "cat" column in a newly added layer with v.to.db rivers_tmp (or rivers after renaming) option=cat layer=2 col=cat. Also, pay some attention to the type= parameter -- for areas (=boundary + centroid) you need to use type=centroid.
May
17
comment How to make the layer 2 use the same vector categories from layer 1?
I think too that requiring an intermediate vector map, as for adding a new layer, is not intuitive.
May
17
comment How do I reproject one raster to match another's in GRASS
1st, you can reproject raster map files outside of GRASS, simply by using gdal utilities. 2nd, if the maps are referenced in different projection systems, it is not possible to have them imported inside the same GRASS Location. You should have created an independent Location for each of your raster maps (since they are projected in different systems). Then, as markusN "answered" reproject from one Location to another.
May
17
comment GRASS v.overlay.or Error when trying to split a polygon with a line
From v.overlay's manual: or: also known as 'union' in GIS (only for atype=area). Not possible to use or with atype=area.
May
8
revised What is the best/easiest way to obtain temporal Landsat imagery?
update
May
4
comment Define area of study in Google Earth before Import in Qgis
Here too, no comments or explanations for the down-votes! Please, leave a short comment when you down-vote a question, why did you do so?
May
2
comment What is Change Detection and how I can perform such analysis with open source tools?
Four aspects of change detection, particularly important when monitoring natural resources (Macleod and Congalton 1998): Detect changes, Identify nature of change, Measure change extent, Assess spatial pattern of change.
Apr
29
comment Can QGIS open KMZ files?
Folks, please leave a short comment for negative votes! Thanks
Apr
28
revised How to compile QGIS with GRASS on Ubuntu?
typo in command line instructions
Apr
23
awarded  Constituent
Apr
23
awarded  Caucus
Mar
18
comment What is the OSGeo4W-equivalent for Linux?
One problem, though, in compiling source code and installing it, is the de-installation! It certainly is better, for beginners, to use pre-compiled packages from within a package manager. Removing manually what sudo make install has put in to the system may be a hard and time-consuming task.