[GRASS-user] Euclidean distance (grow.distance) on raster to certain extent?

[Daniel Lee]

Hi Tanya,

I would use r.distance rather than r.grow.distance and then reclassify the
results to include only areas with <=1108 m distance - that should be a lot
easier.

Best,
Daniel

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2012/5/7 Tanya Dyck <tanya.dyck at hotmail.com>

>  Hello,
>
> I am trying to run the grow.distance command to create a raster that
> displays the euclidean distance from an 'orchard' outward to 1108m.  I am
> not trying to measure the distance between 2 non-null features, but simply
> wish to have the euclidean distance extend out from the orchard to 1108m.
>  I recognize this tool does not allow a distance to be included so I
> created a buffer around my orchard (1108m) and intended to run
> grow.distance on that, however it outputs the distance as if it includes
> the full raster extent (so I have an output raster of 1108m that is all
> yellow as opposed to a range of values displaying varying distances) and
> not limited to my buffer. I want it to assume the buffer extent is the
> raster extent, so to speak.  Is there another way to do this?
> Any ideas would be much appreciated.
>
> Best,
>
> Tanya
>
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