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seen Jul 29 at 21:45

Aug
13
awarded  Popular Question
Jun
4
awarded  Popular Question
Mar
31
awarded  Popular Question
Apr
24
awarded  Caucus
Mar
14
revised How to create contiguous area cartograms in QGIS or R?
added 169 characters in body
Mar
14
revised Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js
solution added, files removed
Mar
14
accepted Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js
Mar
14
comment Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js
New day, new luck! First: Today I understand @mbostocks answer and finally managed to use the proper TWO flags (-s_srs AND -t_srs TOGETHER). Second: I initially worked in some exotic non-transferable (by ogr2ogr EPSG:21780) projection - after starting again with EPSG:21781 the reprojection to EPSG:4326 was possible. Hooray!
Mar
13
comment Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js
ok I am tired - I did ' ogr2ogr -f geoJSON -s_srs hexmap.prj hexmap_fix.geojson hexmap.shp ' but without success.
Mar
13
comment Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js
sry, on output is -t_srs, but I am wrong anyway...
Mar
13
comment Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js
Thank you - I am still struggling. I am doing: 'ogr2ogr -f geoJSON -a_srs hexmap.prj hexmap_fix.geojson hexmap.shp'
Mar
13
comment Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js
I just realised there are a few duplicate nodes in the geoJSON file! Maybe thats the problem. But this is bizarre: I checked the geometry before export (as described above) and there isn't a single error... the duplicate nodes only appear, when re-import the created geoJSON file.
Mar
13
revised Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js
added 28 characters in body
Mar
13
asked Either GeoJson to TopoJson conversion problem, or projection-issue with D3.js
Mar
12
revised How to create contiguous area cartograms in QGIS or R?
point 6 added
Mar
12
awarded  Self-Learner
Mar
12
revised How to create contiguous area cartograms in QGIS or R?
Problem illustration added, clarification
Mar
12
revised How to create contiguous area cartograms in QGIS or R?
Problem illustration added, clarification
Mar
12
revised How to create contiguous area cartograms in QGIS or R?
point 5 added
Mar
12
answered How to create contiguous area cartograms in QGIS or R?