I have a .csv-file containing x and y-coordinates as well as different variables with attributes (var1 to var3). The csv looks like that:
Loading the data into QGIS with Add Layer → Add Delimited Text Layer then results in a point layer covering the whole world with the points lying about 1/4 degree apart from each other. Filtering by variable attributes (show only points where var1 is not NULL) gives me a point layer where each point hits some parcel of land. This looks like this (point layer over some polygon layer):
What I want is to rasterize the point layer into equally sized rasters in order to be able to calculate zonal statistics and do other operations.