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location Greece
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visits member for 3 years, 3 months
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Mar
24
awarded  Civic Duty
Mar
24
comment Difference between FCELL, DCELL and CELL in GRASS GIS?
Please accept one of the answers, both are valid.
Mar
24
answered Difference between FCELL, DCELL and CELL in GRASS GIS?
Mar
21
revised How to georeference using GDAL tools?
correct order for lon and lat in -a_ullr
Mar
21
comment How to georeference using GDAL tools?
I have edited the post for the correct order of x and y in -a_ullr.
Mar
21
suggested approved edit on How to georeference using GDAL tools?
Mar
19
comment Empty raster returned after GRASS i.atcorr with Landsat8 data
Of course, only the original poster can accept an answer. Given the "historical" character of this one, perhaps it is wise to close it, if the OP won't take further action.
Mar
19
comment GRASS i.landsat.toar returns empty raster
Please, accept this answer so as to help future readers to understand better the historical nature of the question. In addition, this example emphasizes the speed with which things can roll in an open source project. In case the answer won't be accepted within reasonable time --given it is an old question and, thus, of less "usage" interest-- I kindly ask (and will act upon via a flag) for closing it.
Mar
19
answered GRASS i.landsat.toar returns empty raster
Mar
19
comment Empty raster returned after GRASS i.atcorr with Landsat8 data
@PolyGeo Apologies for the delay, I've answered the question.
Mar
19
comment Empty raster returned after GRASS i.atcorr with Landsat8 data
Herewith, I kindly ask for to either accept this answer, or close this question if the original poster does not act upon within some reasonable time (given that this is an old question and the poster has no interest any more).
Mar
19
answered Empty raster returned after GRASS i.atcorr with Landsat8 data
Mar
14
comment Error message retrieval in grass.read_command
@markusN's comment is the answer. This shouldn't be an open question any more.
Feb
28
comment What Does the Cell Value in a Composite Raster Mean?
Check also this thread: lists.osgeo.org/pipermail/grass-user/2015-January/071739.html.
Feb
28
comment What Does the Cell Value in a Composite Raster Mean?
Please, read the manual for r.composite. If you use the "default" intensity levels for each component (that is 32), you should get slightly different RGB values compared to the "input" RGB. You may want to use r.what with the -r parameter (Output color values as RRR:GGG:BBB) to query a cell's RGB combination. Also to look at r.what.color. [Links to GRASS6, as this is the version the OP uses].
Feb
25
comment infer the altitude from a DTM & finally provide it to point / evincere la altitudine da un DTM & finalmente fornirla a dei punti
Is the table of the vector map in which you are trying to load the values connected to the database? Check with db.tables -p for example. You might need to add a new, empty, column in which the queried raster values will be fed (ie by using v.db.addcolumn).
Feb
17
comment GDAL-GRASS building fails
Just to avoid mis-information, as stated above by markusN, GDAl and GRASS are not (necessarily) circular dependent.
Feb
15
revised processing MODIS hdf files with gdal
this question clearly refers to the Windows OS
Feb
15
suggested approved edit on processing MODIS hdf files with gdal
Feb
13
comment Open source database of world locations
I'd change the word "source" with "access" in the title.