[GRASS-SVN] r54774 - in grass-addons/grass6/vector/v.strahler: . r.broscoe v.strahler
svn_grass at osgeo.org
svn_grass at osgeo.org
Sat Jan 26 08:41:48 PST 2013
Author: neteler
Date: 2013-01-26 08:41:48 -0800 (Sat, 26 Jan 2013)
New Revision: 54774
Added:
grass-addons/grass6/vector/v.strahler/r.broscoe/r.broscoe_flowchart.dia
grass-addons/grass6/vector/v.strahler/r.broscoe/r.broscoe_flowchart.jpeg
grass-addons/grass6/vector/v.strahler/v.strahler/Qgisout_vstrahler.jpg
grass-addons/grass6/vector/v.strahler/v.strahler/at_rbroscoe.jpg
grass-addons/grass6/vector/v.strahler/v.strahler/input_vstrahler.jpg
grass-addons/grass6/vector/v.strahler/v.strahler/lr_rbroscoe.jpg
grass-addons/grass6/vector/v.strahler/v.strahler/menotre.jpg
grass-addons/grass6/vector/v.strahler/v.strahler/output_vstrahler.jpg
grass-addons/grass6/vector/v.strahler/v.strahler/thrVScell.jpg
grass-addons/grass6/vector/v.strahler/v.strahler/v.strahler_flowchart.dia
grass-addons/grass6/vector/v.strahler/v.strahler/v.strahler_flowchart.jpeg
grass-addons/grass6/vector/v.strahler/v.strahler/wt_rbroscoe.jpg
Removed:
grass-addons/grass6/vector/v.strahler/documentation/
grass-addons/grass6/vector/v.strahler/images/
Modified:
grass-addons/grass6/vector/v.strahler/v.strahler/description.html
Log:
structure demessified
Copied: grass-addons/grass6/vector/v.strahler/r.broscoe/r.broscoe_flowchart.dia (from rev 54771, grass-addons/grass6/vector/v.strahler/documentation/r.broscoe_flowchart.dia)
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Copied: grass-addons/grass6/vector/v.strahler/v.strahler/Qgisout_vstrahler.jpg (from rev 54771, grass-addons/grass6/vector/v.strahler/images/Qgisout_vstrahler.jpg)
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Copied: grass-addons/grass6/vector/v.strahler/v.strahler/at_rbroscoe.jpg (from rev 54771, grass-addons/grass6/vector/v.strahler/images/at_rbroscoe.jpg)
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Modified: grass-addons/grass6/vector/v.strahler/v.strahler/description.html
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--- grass-addons/grass6/vector/v.strahler/v.strahler/description.html 2013-01-26 16:21:32 UTC (rev 54773)
+++ grass-addons/grass6/vector/v.strahler/v.strahler/description.html 2013-01-26 16:41:48 UTC (rev 54774)
@@ -8,11 +8,11 @@
tree in the input data is allowed. No given flow direction is needed.
To find the outlet of each tree, a DEM must be given.
-There are two additional scripts distributed with v.strahler:<br />
+There are two additional scripts distributed with v.strahler:<br>
- <em>r.strahler.sh</em> extracts streams from a DEM and call v.strahler
- on the result. <br />
+ on the result. <br>
- <em>r.broscoe.sh</em> computes further statistical values for a given
- basin. <br />
+ basin.
<h2>NOTES</h2>
@@ -20,20 +20,23 @@
This program is in beta status. It has the following shortcomings: <br />
- The input data has to be topologically clean. Use <em>sloppy</em>=0.0 <br />
-- Source code comments are not doxydized. <br />
+- Source code comments are not doxygenized (not a real problem). <br />
<h3>How the algorithm works</h3>
In a first step, <em>v.strahler</em> identifies all separate networks in
the input dataset. That means, all connected lines are assigned a common
-<em>Basin ID</em>.<br />
+<em>Basin ID</em>.
+<p>
Consequently, the lowest leaf of each tree is identified as outlet.
-An auxiliary DEM is needed at this point. <br />
+An auxiliary DEM is needed at this point.
+<p>
Strahler ordering begins at each leaf of the tree with order N=1
(excluding the outlet). At a confluence, the order N(r) of the resulting
stream is equal to the highest order N(max) of the joining streams or is
-raised by one if there are two or more joining streams of order N(max).<br />
+raised by one if there are two or more joining streams of order N(max).
+<p>
The algorithm returns an ASCII text file with columns: <em>Category</em>
(from input map), <em>Line</em> (topology), <em>Basin</em>, <em>Order</em>;
and the output map has the Strahler Order value instead of "category"
@@ -44,22 +47,22 @@
<h2>EXAMPLE</h2>
-The input map (vector on DEM): <br />
-<br />
-<img src="images/input_vstrahler.jpg"> <br />
-<br />
-<br />
-An example of the sintax in GRASS shell: <br />
-<br />
+The input map (vector on DEM):
+<p>
+<center>
+<img src="input_vstrahler.jpg">
+</center>
+<p>
+An example of the syntax in GRASS command line:
+<p>
<div class="code"><pre>
-GRASS> v.strahler input=esp_1 at mapset output=esp_1 dem=dem_20 at mapset \
+v.strahler input=esp_1 at mapset output=esp_1 dem=dem_20 at mapset \
txout=/home/mapset/esp_1 sloppy=0 layer=1
</pre></div>
-<br />
-<br />
-An extract from the resultant text file: <br />
-<br />
+<p>
+An extract from the resultant text file:
+<p>
<div class="code"><pre>
== Result of Strahler Order ==
Category: Line: Basin: Order:
@@ -91,22 +94,25 @@
128 26 1 3
137 27 1 3
</pre></div>
-<br />
-<br />
-The output map (vector on DEM) form a snapshot of GRASS display: <br />
-<br />
-<img src="images/output_vstrahler.jpg"> <br />
-<br />
-<br />
-The output map (vector only) from Qgis (different colors for different orders): <br />
-<br />
-<img src="images/Qgisout_vstrahler.jpg"> <br />
-<br />
-<br />
+<p>
+The output map (vector on DEM) form a snapshot of GRASS display:
+<p>
+<center>
+<img src="output_vstrahler.jpg">
+</center>
+
+The output map (vector only) from Qgis (different colors for different orders):
+<p>
+<center>
+<img src="Qgisout_vstrahler.jpg">
+</center>
+
<h2>SEE ALSO</h2>
-<em><a href="r.watershed.html">r.watershed</a></em><br>
+<em>
+<a href="r.watershed.html">r.watershed</a>
+</em>
<h2>AUTHOR</h2>
Copied: grass-addons/grass6/vector/v.strahler/v.strahler/input_vstrahler.jpg (from rev 54771, grass-addons/grass6/vector/v.strahler/images/input_vstrahler.jpg)
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Copied: grass-addons/grass6/vector/v.strahler/v.strahler/thrVScell.jpg (from rev 54771, grass-addons/grass6/vector/v.strahler/images/thrVScell.jpg)
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Copied: grass-addons/grass6/vector/v.strahler/v.strahler/v.strahler_flowchart.dia (from rev 54771, grass-addons/grass6/vector/v.strahler/documentation/v.strahler_flowchart.dia)
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Copied: grass-addons/grass6/vector/v.strahler/v.strahler/wt_rbroscoe.jpg (from rev 54771, grass-addons/grass6/vector/v.strahler/images/wt_rbroscoe.jpg)
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