<div dir="ltr">I think there's an error in the docs of the r.viewshed addon. It states that the default output raster contains vertical angle relative to the observer and that the values are:<div><br><div>"a value in [0, 180] representing the vertical angle with regard to the viewpoint, in degrees, if the point is visible. 0 degrees: directly above the observer, 180 degrees: directly below the observer" [1]<br>
</div><div><br></div><div>It's the opposite of r.los, where 0 is below and 180 right above.</div><div>The resulting maps are equivalent, and looking to my results r.los interpretion is right.</div><div><br></div><div>
giovanni</div><div><br></div><div>[1] <a href="https://svn.osgeo.org/grass/grass-addons/grass6/raster/r.viewshed/r.viewshed.html">https://svn.osgeo.org/grass/grass-addons/grass6/raster/r.viewshed/r.viewshed.html</a></div>
<div><div><br></div>-- <br><div dir="ltr">Giovanni Allegri<br><a href="http://about.me/giovanniallegri" target="_blank">http://about.me/giovanniallegri</a><div>Twitter: <a href="https://twitter.com/_giohappy_" target="_blank">https://twitter.com/_giohappy_</a></div>
<div>blog: <a href="http://blog.spaziogis.it" target="_blank">http://blog.spaziogis.it</a><br>GEO+ geomatica in Italia <a href="http://bit.ly/GEOplus" target="_blank">http://bit.ly/GEOplus</a></div></div>
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