Changes between Version 4 and Version 5 of VirtualSpatialData
- Timestamp:
- Jan 27, 2009, 4:05:10 PM (15 years ago)
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VirtualSpatialData
v4 v5 11 11 1. create a DSN (ODBC datasource) for your data source and test it. How you do this is system and driver dependent, you have to either know how or figure it out yourself. 12 12 2. test using ogrinfo 13 3. create a virtual data file using the instructions provided at http://www. remotesensing.org/gdal/ogr/drv_vrt.html13 3. create a virtual data file using the instructions provided at http://www.gdal.org/ogr/drv_vrt.html 14 14 4. test using ogrinfo 15 15 5. create a layer of TYPE OGR with a CONNECTION that points to the virtual data file and DATA that is one of the OGRVRTLayer layer names, with appropriate classes for drawing … … 68 68 ogrinfo is a binary utility that can be built from the gdal source tree. Once you figure out how to build it, you can use it to test various aspects of an OGR datasource. Details on using ogrinfo can be found at: 69 69 70 http://www.gdal.org/ogr /ogr_utilities.html70 http://www.gdal.org/ogr_utilities.html 71 71 72 72 The options you will likely want to use are:
