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Jul
21
comment Difference between gdalwarp and projectRaster
Thanks for this hint with the projection methods! If I find time I'll take a look deeper into those (However, I'm more familiar with R then with C).
Jul
20
comment Difference between gdalwarp and projectRaster
I expect that both methods yield the same re-projected raster, the same extent and the same value at (-100, 50). However, they apparently don't :(
Jul
20
comment Difference between gdalwarp and projectRaster
No one? I supplied a fully reproducible example (should work with Linux or Mac)...
Jul
20
revised Difference between gdalwarp and projectRaster
added 39 characters in body
Jul
17
asked Difference between gdalwarp and projectRaster
Apr
16
awarded  Autobiographer
Mar
30
accepted Find headwater polygons
Feb
19
comment Find headwater polygons
I just selected a few polygons in the north of the data set overview, detail.
Feb
18
awarded  Benefactor
Feb
17
comment Find headwater polygons
I will run the query on a server. I think that only a minor part of the polygons will meet the selection criteria...
Feb
17
comment Find headwater polygons
Great! Thank's for your efforts!
Feb
13
comment Find headwater polygons
@JohnBarça. It's not a part of my actual data set, but very similar and freely available here.
Feb
12
comment Find headwater polygons
Thank you all for your thoughts! I am getting closer (e.g. this is part (1) of @MikkelLydholmRasmussen suggestions).
Feb
11
awarded  Promoter
Feb
11
revised Find headwater polygons
added 218 characters in body
Feb
11
comment Find headwater polygons
@JohnBarça I put sample data on my dropbox. Data is from south-west Germany and approx. 10% of my data set. It's two shape files - one with streams and one with polygons.
Feb
5
comment Find headwater polygons
Sorry for the delay @JohnBarça! I am currently too busy with other things... Will try to provide example data by the end of the week.
Feb
2
comment Find headwater polygons
Yeah, will upload a reproducible data set this evening.
Jan
29
comment Find headwater polygons
It covers Germany and has ~40.000 rows.
Jan
29
awarded  Commentator