I am trying to create a raster which displays the relative distance of a pixel to a set of polygons of a specific value.
I have satellite derived fire scar data going back for the last 20 years.
For the purposes of my analysis any vegetation older that 3 years is classified as long un-burnt (this analysis is for a particularly fire prone region). The rest is classed as young vegetation.
It is easy enough to produce a shp/raster which, displays these two classes either in separate files or together. My first thought was to convert the files to geotif and do a proximity analysis in QGIS, I then tried a multi distance buffer but this didn't work properly either.
The blue polygons are old vegetation, the pink are younger. Ideally the raster will display a graduation scale of distance from the blue polygons (including the blue polygons which would display 0m/km).
