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Nov
6
revised How to calculate raster statistics for polygons?
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Nov
3
answered How to calculate raster statistics for polygons?
Oct
2
awarded  Editor
Oct
2
revised Summarize the total area of land use polygons within map sheets - how?
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Sep
22
comment Summarize the total area of land use polygons within map sheets - how?
I still run 32-bit Java on a laptop with 4 GB RAM, so I definitely need to update my workstation. But its good to know that its not all hardware, but rather how you tweak your software to use it that does the trick. And I´m really happy to have found this feature in OJ, its one of my favorite desktop GIS.
Sep
22
answered How do you calculate the area of polygons which overlap a buffer around a point?
Sep
22
answered Summarize the total area of land use polygons within map sheets - how?
Sep
22
comment Summarize the total area of land use polygons within map sheets - how?
This does the trick, sort of. Its much more laborious and complicated than doing it with OJ, but it seems I can actually get all 26 000 map sheets processed this way.
Sep
22
comment Summarize the total area of land use polygons within map sheets - how?
Thanks for your info on execution time. It seems my problem really is a hardware issue: I need an updated & more powerful desktop.
Sep
22
comment Summarize the total area of land use polygons within map sheets - how?
I am using the PLUS-version but I have´nt dug deep enough to note this particular functionality. It does the trick, I did a test on part of my dataset. But when I try to run the tool on my full dataset, OJ runs out of memory when trying to load all the 1,2 million land use parcels. Thanks for the tip, though, I´ll be sure to use it on smaller datasets.
Sep
22
awarded  Student
Sep
22
asked Summarize the total area of land use polygons within map sheets - how?
May
27
answered How to perform Raster Reclassification in QGIS?
Aug
13
awarded  Teacher
Mar
5
answered What free programs should every GIS user have installed?