Hi Jukka, > > If both both .qix and sbn/sbx spatial indexes are present, which one GDAL is > picking?
I've just checked. .qix is picked up in priority. But it might be difficult to get into that situation, since the OGR shapefile driver should delete any existing .qix or .sbn before building a new .qix. > Is the feeling still the same as in > http://erouault.blogspot.fi/2012/06/gdalogr-using-shapefile-native-sbn.html > that sbn/sbx is faster with big shapefiles? I haven't had any third-party confirmation of this, but this probably doesn't make a huge difference ultimately. .sbn might be a little less CPU intensive than .qix, but this might only show in artificial situations where data is already cached by the operating system (accessing to the shapes is what take the most time), and when you exercice a lot the spatial index. When just scrolling in QGIS, I bet nobody can tell the difference. Even _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
