Chuiqing, The OGR Shapefile driver supports spatial indexing through qix files. To explicitly create a spatial index use the Create Index command:
CREATE SPATIAL INDEX ON tablename [DEPTH N] Depth can range from 1 to 12. You can issue the SQL command using ogrinfo. ogrinfo -sql 'CREATE SPATIAL INDEX ON shapefilename [DEPTH N]' path/to/shapefile/directory http://www.gdal.org/ogr/drv_shapefile.html -> Spatial and Attribute Indexing. On Fri, Feb 14, 2014 at 3:12 AM, <chqz...@gmail.com> wrote: > Hi chaitanya_ch, > I know you are an expert on this, I want to know how can I use GDAL > library to implemented qix reading and using in spatial filtering. > I have many large shape files in Gigbyte level, they are very slow when > navigating in my app. I want to use *.qix file through GDAL library to > accelerate it. > > How can I do that? > Thank you, > > C. Zeng > > > _____________________________________ > Sent from http://osgeo-org.1560.x6.nabble.com > > -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E
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