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Feb 9, 2020 at 22:40 review Reopen votes
Feb 10, 2020 at 7:06
Apr 13, 2017 at 12:33 history edited CommunityBot
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Mar 31, 2017 at 6:58 history closed PolyGeo Needs more focus
Mar 31, 2017 at 6:58 history edited PolyGeo CC BY-SA 3.0
added 27 characters in body
May 1, 2016 at 16:19 answer added Stefan timeline score: 11
Feb 6, 2015 at 12:01 history edited PolyGeo CC BY-SA 3.0
edited body; edited tags
Feb 22, 2012 at 20:32 answer added geographika timeline score: 1
Feb 21, 2012 at 21:59 comment added Uffe Kousgaard If DBF or SHP goes beyond 2 GB you are likely to run into problems on many systems. Beyond 4 GB won't work with SHP at all and I think DBF would have the same problem. In theory it should work, but in reality most software is using signed 32-bit integers for opening them.
Feb 21, 2012 at 21:35 vote accept canisrufus
Feb 21, 2012 at 20:03 comment added djq @RagiYaserBurhum I see. 4GBs bad, 2GBs good. Interestingly the shapefile size limited the file size I could loading into PostGIS (on Win 32bit). Completely separate problem, but it made me pay attention to how big my file was.
Feb 21, 2012 at 19:08 comment added Ragi Yaser Burhum @celenius From gdal.org/ogr/drv_shapefile.html "Geometry: The Shapefile format explicitly uses 32bit offsets and so cannot go over 8GB (it actually uses 32bit offsets to 16bit words). Hence, it is is not recommended to use a file size over 4GB. Attributes: The dbf format does not have any offsets in it, so it can be arbitrarily large." So you can have dbfs that are pretty big, but you have to be careful with your shp going over 4GB. Then you are playing with fire.
Feb 21, 2012 at 18:46 comment added djq @Mapperz Are you certain about the 2GB file limit for shapefiles? I generated some shapefiles that were 3GB recently and was able to open them in ArcMap.
Feb 21, 2012 at 18:21 comment added Ragi Yaser Burhum @PolyGeo you and everyone else :)
Feb 21, 2012 at 18:03 history edited underdark CC BY-SA 3.0
edited title
Feb 21, 2012 at 17:51 answer added Stéphane Henriod timeline score: 3
Feb 21, 2012 at 4:16 comment added PolyGeo Would like to see Python API to read/write File Geodatabase (at least Simple Features) without ArcGIS license - that would be Open.
Feb 21, 2012 at 1:52 comment added Ragi Yaser Burhum @canisrufus technically, you can also use the ArcObjects driver gdal.org/ogr/drv_ao.html that writes to any ESRI supported format (as long as you have an ESRI license).
Feb 21, 2012 at 1:46 answer added Ragi Yaser Burhum timeline score: 52
Feb 21, 2012 at 1:23 comment added canisrufus Ah, an important difference.
Feb 20, 2012 at 23:35 history tweeted twitter.com/#!/StackGIS/status/171739876880957440
Feb 20, 2012 at 22:20 comment added Mapperz Shapefiles and Personal Geodatabases (an MS Access table) are limited to 2GB. That is not very much data in today's terms... so would recommend File Geodatabases
Feb 20, 2012 at 22:17 comment added canisrufus Oops, I searched this doc table for "geodatabase" and read that it won't write personal geodatabases. I missed that it writes FileGDBs.
Feb 20, 2012 at 22:12 comment added Mapperz You can write and read geodatabases (via API) using GDAL gdal.org/ogr/drv_filegdb.html using resources.arcgis.com/content/geodatabases/10.0/file-gdb-api
Feb 20, 2012 at 21:23 comment added canisrufus @Mapperz Other than the recently released Geodatabase API, I don't see any tools for writing a geodatabase that are free. I don't think this could count as a replacement except in the ESRI portion of the world.
Feb 20, 2012 at 20:52 comment added Mapperz Geodatabase? but then the shapefile never had true topology.
Feb 20, 2012 at 20:51 answer added Uffe Kousgaard timeline score: 18
Feb 20, 2012 at 20:50 answer added Kirk Kuykendall timeline score: 6
Feb 20, 2012 at 20:45 answer added johanvdw timeline score: 7
Feb 20, 2012 at 20:02 history asked canisrufus CC BY-SA 3.0