[gdal-dev] Point density gdal_rasterize -add switch

[Karl Zinglersen]

The rasterization of points, lines and polygons went nicely with -burn 1
-add to a discrete heat map. Thank you, Jukka.

Particularly we where happy with the line density, but have a follow-up
question:
What does the raster values represent?

We did a vector polygon grid test clipping up the lines, where line length
or line count were different, so we guess it is something else.

Karl

Den 30. jan. 2018 17.16 skrev "jratike80" <
jukka.rahkonen at maanmittauslaitos.fi>:

> > Burn works:
> > gdal_rasterize.exe -burn 1 -tr 20 20 -l points c:/Temp/points.shp
> > c:/Temp/out.tif
>
> > Add doesn't
> > gdal_rasterize.exe -add -tr 20 20 -l points c:/Temp/points.shp
> > c:/Temp/out.tif
>
> Hi,
>
> I have never used the -add option but I would try it as
>
> gdal_rasterize.exe -burn 1 -add -tr 20 20 -l points c:/Temp/points.shp
> c:/Temp/out.tif
>
> -Jukka Rahkonen-
>
>
>
> --
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