[GRASS5] [PATCH] v.what: doesn't substract isles'areas

[Thierry Laronde]

On Mon, Sep 08, 2003 at 04:23:49PM +0200, Markus Neteler wrote:
> On Mon, Sep 08, 2003 at 12:02:51PM +0200, Radim Blazek wrote:
> > On Sunday 31 August 2003 23:18, Thierry Laronde wrote:
> > > Hello,
> > >
> > > The subject says it all. d.what.vect and v.what were not in sync,
> > > d.what.vect was correctly substracting the areas of the islands, when
> > > v.what was not.
> > >
> > > The patch is simply derived from d.what.vect.
> > 
> > I have commited to cvs.
> 
> Should this go into the release_branch? 
> Yes, first someone should test the updated v.what in Lat/Long, UTM etc.
> 
> But keeping the bug in 5.0.3 I don't like too much...

Agreed.

For the tests, I think that  G_begin_polygon_area_calculations() handles all
the conversions? [This is not humor, merely a question since I have only made
 a quick comparison/search to fix this bug that was critical, at least for
what I was doing at the moment ;) I'm only scratching the surface of GRASS
and there may be subtleties that I have missed].

+  /*
+   inititalizations needed to do area calculations for
+   grid cells, based on the current window "projection" field.
+  */
+  G_begin_polygon_area_calculations();

Cheers,

-- 
Thierry Laronde (Alceste) <tlaronde at polynum.org>
Key fingerprint = 0FF7 E906 FBAF FE95 FD89  250D 52B1 AE95 6006 F40C