I'm looking to do something which seem simple to me, but I haven't found a solution since 2 days I looked for.
I've got a Postgis DB with lot of points (WGS84) spaced of 100 meters which cover a territory. For each of these points, I've got a value associated. I want to convert all theses point to a raster Geotiff.
The ideal process will make a Geotiff file where each pixels corresponds to the value of the corresponding points of the db.
I tried the heatmap plug-in of QGIS, but It doesn't do what I want, it interpolate lot of new points I don't need, I want in the tiff file only values I've got in my database.
Any suggestion about how to easily generate this file ?