[GRASS-dev] Total area of a polygon changes by shifting using v.transform in grass6.5
swap.ghsh at gmail.com
Sun Mar 17 01:39:43 PDT 2013
Actually I create a vector polygon using vector digitizing tool. My aim is
to shift & rotate the created vector arround some elevated raster map using
v.transform and create newvector.
Now I convert newvector polygon to raster suppose rast1.
Next generate report by passing two raster- elevated-raster, rast1.
After sending this maill I discover that vector area not changes but the
converted raster area not same with vector polygon.
Thanks & Regards,
On Sun, Mar 17, 2013 at 2:57 AM, Markus Neteler <neteler at osgeo.org> wrote:
> On Fri, Mar 15, 2013 at 8:50 AM, SWAPAN GHOSH <swap.ghsh at gmail.com> wrote:
> > Any body can help me to recover the problem like-
> > "Total area of a polygon changes by shifting using v.transform in
> > grass6.5"
> If I get the question right: intersect "before" and "after" with v.overlay,
> then calculate the resulting area with v.report.
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