[GRASS-user] Triangles polygons with Arc*

[Daniel Victoria]

Well, maybe Arc is smoothing those 3 pixels...

On Tue, May 27, 2008 at 12:07 AM, maning sambale
<emmanuel.sambale at gmail.com> wrote:
> Hi,
> Hi,
>
> Just curious if anybody encountered this issue with Arc*:
> When converting raster to vector using ArcGIS/View triangular polygons
> are generated especially with small areas (1-3 pixels from the
> original raster).
>
> See image:
> http://farm3.static.flickr.com/2127/2510680112_25cc16686e.jpg
>
> I think I made a similar thing before (using ArcGIS "Hydro
> extension").  Is this correct?
> As far as I'm concerned, the output should be regular polygon blocks
> since raster grid is the input.  Unless in GRASS, you use the -s flag
> of r.to.vect
>
> maning
>
>
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