I'm using QGIS 2.8.1. I have one raster map with rainfall data with 1:3 scale when zoomed to layer.
There's another vector map with points which in scale 1:221,691 when zoomed to layer.
Both are having the same CRS which is WGS 84/UTM zone 44N EPSG:32644. I want to use "Add grid values to points function" under Raster-Vector operations in the processing toolbox. But grid values appear as null for the points in the output attribute table. I think this because the scales are different. How can I solve this?