Thanks dbnakuru, quote author="dbnakuru"> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> Otherwise what you can do is test to see if your point is in any of the polygons returned by OGR. So let OGR do the initial checks then grab the vertices yourself and run a point in polygon test. There are multiple examples of the crossings test available on the web search for code point in polygon to see a bunch in google. Just pick the one that's appropriate for whatever language you're using.
I am writing the application in Java using the Java bindings. Thus, as you suggested, for the inputs for which I get multiple features, for each feature, I will run the point-in-polygon test by retrieving all its ring points and checking the input point if it falls inside the polygon ring of the feature. For this, I am trying to call feature.GetGeometryRef().getPoints(). This method is returning me null. Also, getPointCount() is returning me 0. When I write the same thing in C++, by doing : OGRGeometry *geom = feature->GetGeometryRef(); OGRLinearRing *extRing = ((OGRPolygon *) geom)->getExteriorRing(); // ....extRing->getNumPoints() ... etc This returns me valid number of points and their coordinates. In Java, there is no explicit api for different geometry types. How do I achieve this using the Java api ? Am I going in the right direction to achieve this? -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Re-Accuracy-of-OGRLayer-SetSpatialFilter-API-tp4980063p4980987.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
