Up to know I have used GDAL to extract raster data from geotiffs and then opengl's used to show that raster data. But when it comes to extract vector data with the help of ogr library, what library ...
Up to now, I have used GDAL in order to read raster information and geotiffs and show them with the help of OpenGL. Now I have a vector dataset, and by that, I mean I have the files with types: DBF ...
I want to know how to keep a layer always on top of other layers! After adding a vector layer ( QgisInterface->addVectorLayer ), I want that layer to always be displayed on top of layers added later. ...