[GRASS-SVN] r55096 - grass-addons/grass6/vector/v.mainchannel

[svn_grass at osgeo.org]

Author: hamish
Date: 2013-02-17 16:38:57 -0800 (Sun, 17 Feb 2013)
New Revision: 55096

Modified:
   grass-addons/grass6/vector/v.mainchannel/description.html
Log:
linewrap, spelling

Modified: grass-addons/grass6/vector/v.mainchannel/description.html
===================================================================
--- grass-addons/grass6/vector/v.mainchannel/description.html	2013-02-18 00:33:07 UTC (rev 55095)
+++ grass-addons/grass6/vector/v.mainchannel/description.html	2013-02-18 00:38:57 UTC (rev 55096)
@@ -1,12 +1,32 @@
 <h2>DESCRIPTION</h2>
 
-<em>v.mainchannel</em> Finds the main channel of a basin starting from the vector file of the stream network.
-As first you have to visualize on the GRASS monitor the vector map wich you want to calculate the main channel for; with a scale (so you can realize the distances between the closing section and the sources) you can choose some values for the cost isolines (from the outlet); then you can individuate (by interrogating a DEM underlying the vector map) the outlet cross section coords. These coords, the selected cost values and the input/output map names have to be given in input to the program.<br /> 
-The program returns the main channel considering two factors:<br />
-<em>distance</em>: often the main channel is the longest track in the network<br />
-<em>height</em>: the source of the main channel is conventionally taken as the higest<br />
-This module can be used for any ordinary vector stream network, but the analisys becomes particoulary interesting if you have a vector stream network ordered by Horton-Strahler (e.g. derived from <em><a href="v.strahler.html">v.strahler</a></em> or <em><a href="r.strahler.sh.html">r.strahler.sh</a></em>) because you can see if the main channel includes the max_ordered stream, and, if not, you can consequently modify the "cost" values assigned. <br />
+<em>v.mainchannel</em> Finds the main channel of a basin starting from the
+vector file of the stream network. As first you have to visualize on the
+GRASS monitor the vector map which you want to calculate the main channel
+for; with a scale (so you can realize the distances between the closing
+section and the sources) you can choose some values for the cost isolines
+(from the outlet); then you can individuate (by interrogating a DEM
+underlying the vector map) the outlet cross section coordinates. These
+coordinates, the selected cost values and the input/output map names have
+to be given in input to the program.
+<br />
+The program returns the main channel considering two factors:
+<br />
+ <em>distance</em>: often the main channel is the longest track in the network
+<br /> 
+<em>height</em>: the source of the main channel is conventionally taken as
+ the highest
+<br />
+This module can be used for any ordinary vector stream network, but the
+analysis becomes particularly interesting if you have a vector stream
+network ordered by Horton-Strahler (e.g. derived from 
+<em><a href="v.strahler.html">v.strahler</a></em> or
+<em><a href="r.strahler.sh.html">r.strahler.sh</a></em>) because you can see if
+the main channel includes the max_ordered stream, and, if not, you can
+consequently modify the "cost" values assigned.
+<br />
 
+
 <h2>EXAMPLE</h2>
 
 The syntax:
@@ -15,15 +35,16 @@
   v.mainchannel dem=dem xcoor=483456.23 ycoor=234765.33 cost=500,1000,2500,5000,10000 input=input_map output=output_map 
 </pre></div>
 
+
 <h2>SEE ALSO</h2>
 <em><a href="v.strahler.html">v.strahler</a></em><br>
 <em><a href="r.strahler.sh.html">r.strahler.sh</a></em><br>
 <em><a href="v.net.iso.html">v.net.iso</a></em><br>
 
+
 <h2>AUTHORS</h2>
 
 Ivan Marchesini and Annalisa Minelli, Univ. Perugia. <br>
 
-
 <p>
 <i>Last changed: $Date$</i>