[Shapelib] spatial index support - idx file

Frank Warmerdam fwarmerdam at gmail.com
Wed Mar 9 12:44:26 EST 2005

On Wed, 9 Mar 2005 12:35:20 -0500, Gregory Muench
<gmuench at currentcomm.net> wrote:
> Is there a shapelib function that will create a .idx spatial index file?


I am not familiar with .idx spatial indexes.  ESRI uses spatial indexes
using the extensions .sbn and .sbx.  MapServer and OGR use 
spatial indexes with the extension .qix.  The .qix format is supported
by the CVS version of Shapelib, but not the last published version. 

Does that answer your question?  

PS. .idx sounds more like an attribute index to me. 

Best regards,
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent

More information about the Shapelib mailing list