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<p><font size="-1">Hello Markus,</font></p>
<p><font size="-1">is it possible to add an option to evaluate the
negatives hight in a future release ? (I don't know C)</font><br>
</p>
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<div id="signature">Best regards,<br>
Frank<br>
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<div class="moz-cite-prefix">Le 30/07/2018 à 16:19, Markus Metz a
écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CAG+h=FHe=tan-4-UmytTTQhGosedVd_jJA9PK28AMyUVAc_8vQ@mail.gmail.com">
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<br>
On Sat, Jul 28, 2018 at 3:59 PM, Frank David <<a
href="mailto:frank.david@geophom.fr" moz-do-not-send="true">frank.david@geophom.fr</a>>
wrote:<br>
><br>
> Dear all,<br>
><br>
<div>> It seems that r.horizon in does not return negative
heights. How it's possible in case of the given point from the
calculation is done is located on mountain and the horizon
around is below zero ??. I miss something may be...</div>
<div><br>
</div>
<div>r.horizon is indeed ignoring points that are lower than the
given point, see</div>
<div><a
href="https://trac.osgeo.org/grass/browser/grass/trunk/raster/r.horizon/main.c#L1037"
moz-do-not-send="true">https://trac.osgeo.org/grass/browser/grass/trunk/raster/r.horizon/main.c#L1037</a></div>
<div>and following lines</div>
<div><br>
</div>
<div>I agree that this behaviour is questionable</div>
<div><br>
</div>
<div>Markus M</div>
<div><br>
</div>
><br>
> Thank you for your explanations<br>
><br>
> Regards<br>
><br>
> Frank<br>
><br>
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</blockquote>
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