Re: [gdal-dev] Recommended strategy to handle MIF file with a few big multipolygons
Hello, On Tue, Mar 11, 2014 at 12:05 AM, Even Rouault even.roua...@mines-paris.org wrote: Well, attach a debugger to the ogr2ogr process and see where the time is spent. your SQL clause could be replaced by -fid 1, but I'm not sure that the reason for the slowness. Don't know. I could handle to load it in PostGIS using ogr2ogr and changing some Postgres parameters. Thanks anyway! Hello, I'm working with a MIF file, contaning just 5 multipolygons (in form of regions, in MapInfo terms). But the file weights 700MB. So, the multipolygons are really big. I'd like to transform my file to SHP or PostGIS using ogr2ogr, but any operation takes forever. My current approach is to use -sql flag this way: ogr2ogr -sql select * from my_layer where fid = 1 my_layer.shp my_layer.mif But after 2 hours, it still continues working. I've activated debug, and last text I've seen is: Shape: Treating as encoding 'ISO-8859-1'. All the clip operations I've tried with ogr2ogr have the same problems: I have to wait hours, and after that, I just get a SHP of 100 Bytes. So, I kill the process. Should I be more patient? Or is there any smarter approach to handle this kind of file? Best regards, -- Geospatial professional services http://even.rouault.free.fr/services.html -- Jorge Arevalo Freelance developer http://about.me/jorgeas80 ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
[gdal-dev] Recommended strategy to handle MIF file with a few big multipolygons
Hello, I'm working with a MIF file, contaning just 5 multipolygons (in form of regions, in MapInfo terms). But the file weights 700MB. So, the multipolygons are really big. I'd like to transform my file to SHP or PostGIS using ogr2ogr, but any operation takes forever. My current approach is to use -sql flag this way: ogr2ogr -sql select * from my_layer where fid = 1 my_layer.shp my_layer.mif But after 2 hours, it still continues working. I've activated debug, and last text I've seen is: Shape: Treating as encoding 'ISO-8859-1'. All the clip operations I've tried with ogr2ogr have the same problems: I have to wait hours, and after that, I just get a SHP of 100 Bytes. So, I kill the process. Should I be more patient? Or is there any smarter approach to handle this kind of file? Best regards, -- Jorge Arevalo Freelance developer http://about.me/jorgeas80 ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] Recommended strategy to handle MIF file with a few big multipolygons
Well, attach a debugger to the ogr2ogr process and see where the time is spent. your SQL clause could be replaced by -fid 1, but I'm not sure that the reason for the slowness. Hello, I'm working with a MIF file, contaning just 5 multipolygons (in form of regions, in MapInfo terms). But the file weights 700MB. So, the multipolygons are really big. I'd like to transform my file to SHP or PostGIS using ogr2ogr, but any operation takes forever. My current approach is to use -sql flag this way: ogr2ogr -sql select * from my_layer where fid = 1 my_layer.shp my_layer.mif But after 2 hours, it still continues working. I've activated debug, and last text I've seen is: Shape: Treating as encoding 'ISO-8859-1'. All the clip operations I've tried with ogr2ogr have the same problems: I have to wait hours, and after that, I just get a SHP of 100 Bytes. So, I kill the process. Should I be more patient? Or is there any smarter approach to handle this kind of file? Best regards, -- Geospatial professional services http://even.rouault.free.fr/services.html ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
