[GRASS-dev] Re: [GRASS-user] How to find out an angle between to points on the map (for r.plane, r.lake)

[Dylan Beaudette]

On Sunday 02 March 2008 08:18:05 pm Michael Barton wrote:
> On Mar 2, 2008, at 7:40 PM, Dylan Beaudette wrote:
> > On Sunday 02 March 2008, Michael Barton wrote:
> >> On Mar 2, 2008, at 6:15 PM, Helena Mitasova wrote:
> >>> This reminds me - was the patch below submitted to SVN?
> >>> Do we have a procedure (dedicated person) for keeping
> >>> track of patches submitted through track
> >>> and making sure they get submitted if appropriate?
> >>>
> >>> This angle is also needed to derive pre-defined flow (e.g.
> >>> ditches or pipes that are not in the DEM) as inputs into simwe -
> >>> I used m.cogo for that but d.measure is much more convenient.
> >>>
> >>> Thanks for adding it,
> >>
> >> I just tried to check out any updates to d.measure and found that it
> >> doesn't run on my Mac. It produces a bus error. I don't need it, but
> >> folks should be aware of this.
> >>
> >> Michael
> >
> > I do not have access to a Mac, but the module seems to compile and
> > run fine on
> > Linux x86.
> >
> > Could it be the call to atan2() -- perhaps the math library is not
> > accessed
> > the same way on Mac OS X ?
>
> I don't know. It compiled fine. Just won't run.
>
> Michael

What happens if you replace the atan2() function call with something simpler, 
like a simple addition (obviously resulting bogus values).

Just an idea

Dylan



-- 
Dylan Beaudette
Soil Resource Laboratory
http://casoilresource.lawr.ucdavis.edu/
University of California at Davis
530.754.7341