[GRASS-CVS] hamish: grass6/raster/r.los description.html,1.5,1.6

[grass at intevation.de]

Author: hamish

Update of /grassrepository/grass6/raster/r.los
In directory doto:/tmp/cvs-serv15103

Modified Files:
	description.html 
Log Message:
todo: rewrite the module


Index: description.html
===================================================================
RCS file: /grassrepository/grass6/raster/r.los/description.html,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -d -r1.5 -r1.6
--- description.html	28 Oct 2007 03:58:12 -0000	1.5
+++ description.html	21 Nov 2007 07:17:54 -0000	1.6
@@ -72,6 +72,16 @@
 echo "symbol extra/target 25 598869 4916642 red" | d.graph -m
 </pre></div>
 
+<H2>TODO</H2>
+
+Rewrite using ideas from <em>r.cva</em> and a method which scales better
+to large regions.<BR>A suggested method is detailed in:<BR>
+Izraelevitz, David (USACE).<BR>
+'A Fast Algorithm for Approximate Viewshed Computation'<BR>
+<i>Photogrammetric Engineering & Remote Sensing</i>, July 2003
+<!-- http://article.gmane.org/gmane.comp.gis.grass.devel/1781
+  Post by Paul Kelly 2003-08-13 to grass-dev, 
+  "Re: [bug #2061] (grass) r.los needs FP update" -->
 
 <H2>SEE ALSO</H2>