[GRASS-SVN] r44288 - grass-addons/raster/r.basin
svn_grass at osgeo.org
svn_grass at osgeo.org
Wed Nov 10 02:18:39 EST 2010
Author: madi
Date: 2010-11-09 23:18:38 -0800 (Tue, 09 Nov 2010)
New Revision: 44288
Modified:
grass-addons/raster/r.basin/description.html
Log:
Clean html 2
Modified: grass-addons/raster/r.basin/description.html
===================================================================
--- grass-addons/raster/r.basin/description.html 2010-11-09 18:25:09 UTC (rev 44287)
+++ grass-addons/raster/r.basin/description.html 2010-11-10 07:18:38 UTC (rev 44288)
@@ -1,144 +1,132 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
-<HTML>
-<HEAD>
-<TITLE>r.basin</TITLE>
-<STYLE TYPE="text/css">
-<!--
-h2 {
- font-size: 14pt;
-}
-h4 {
- font-size: 11pt;
-}
+<title>GRASS GIS manual: r.basin</title>
-.header {
- font-family: "Albany", sans-serif;
- font-style: italic;
- color: #00ae00;
-}
+<h2>NAME</h2>
+<em><b>r.basin</b></em> - Generates the main morphometric parameters of the basin
+starting from the digital elevation model and the coordinates of
+the basin's closing section.
-.subheader {
- font-family: "Albany", sans-serif;
- font-style: italic;
-}
--->
-</STYLE>
-</HEAD>
-<BODY>
-<H2 CLASS="header">DESCRIPTION</H2>
-<P>
-The tool gives the main morphometric parameters of the basin
-starting from the digital terrain model and the coordinates of
-the basin closing section.
-</P>
-<H2 CLASS="header">KEYWORDS</H2>
-<P>Raster</P>
-<H2 CLASS="header">USAGE</H2>
-<BLOCKQUOTE>
-<EM>r.basin.py [-ac] map=name prefix=output prefix easting=easting northing=northing [threshold=threshold]</EM>
-</BLOCKQUOTE>
-<H4 CLASS="subheader">Flags</H4>
-<DL>
- <DT>-a</DT><DD>Use default threshold (1km<sup>2</sup>)</DD>
- <DT>-c</DT><DD>No maps output</DD>
-</DL>
-<H4 CLASS="subheader">Parameters</H4>
-<DL>
- <DT>map</DT>
- <DD>Name of elevation raster map</DD>
- <DT>prefix</DT>
- <DD>output prefix (must start with a letter)</DD>
- <DT>easting</DT>
- <DD>east coordinate of the closing section (must belong to river network)</DD>
- <DT>northing</DT>
- <DD>north coordinate of the closing section (must belong to river network)</DD>
- <DT>threshold</DT>
- <DD>threshold (<EM>r.watershed</EM> threshold)</DD>
-</DL>
-<H2 CLASS="header">OUTPUT</H2>
-<H4 CLASS="subheader">Morphometric parameters of basin</H4>
-<P>The main parameters are:</P>
-<UL>
-<LI>The coordinates of the vertices of the rectangle containing the basin.</LI>
-<LI>The center of gravity of the basin: the coordinates of the pixel nearest
+<h2>KEYWORDS</h2>
+<p>Raster, hydrology
+
+<h2>SYNOPSIS</h2>
+<b>r.basin.py</b><br>
+<b>r.basin.py help</b><br>
+<b>r.basin.py [-ac] map=name prefix=output prefix easting=easting northing=northing [threshold=threshold] </b>
+
+<h3>Flags</h3>
+<dl>
+<dt><b>-a</b></dt>
+<dd>Use default threshold (1km<sup>2</sup>)</dd>
+<dt><b>-c</b></dt>
+<dd>No maps output</dd>
+</dl>
+
+<h3>Parameters</h3>
+<dl>
+<dt><b>map</b>=<em>name</em></dt>
+<dd>Name of elevation raster map</dd>
+<dt><b>prefix</b>=<em>name</em></dt>
+<dd>output prefix (must start with a letter)</dd>
+<dt><b>easting</b>=<em>easting</em></dt>
+<dd>east coordinate of the closing section (must belong to river network)</dd>
+<dt><b>northing</b>=<em>northing</em></dt>
+<dd>north coordinate of the closing section (must belong to river network)</dd>
+<dt><b>threshold</b>=<em>integer</em></dt>
+<dd>threshold (<em>r.watershed</em> threshold)</dd>
+</dl>
+
+<h2>OUTPUT</h2>
+<h3>Morphometric parameters of basin</h3>
+<p>The main parameters are:
+<ul>
+<li>The coordinates of the vertices of the rectangle containing the basin.</li>
+<li>The center of gravity of the basin: the coordinates of the pixel nearest
to the center of gravity of the geometric figure resulting from the projection
-of the basin on the horizontal plane.</LI>
-<LI>The area of the basin: is the area of a single cell multiplied by the
-number of cells belonging to the basin.</LI>
-<LI>The perimeter: is the length of the contour of the figure resulting by the
-projection of the basin on the horizontal plane.</LI>
-<LI>Characteristic values of elevation: the highest and the lowest altitude,
+of the basin on the horizontal plane.</li>
+<li>The area of the basin: is the area of a single cell multiplied by the
+number of cells belonging to the basin.</li>
+<li>The perimeter: is the length of the contour of the figure resulting by the
+projection of the basin on the horizontal plane.</li>
+<li>Characteristic values of elevation: the highest and the lowest altitude,
the difference between them and the mean elevation calculated as the sum of
-the values of the cells divided by the number of the cells.</LI>
-<LI>The mean slope, calculated averaging the slope map.</LI>
-<LI>The length of the directing vector: the length of the vector linking the
-outlet to the center of gravity of the basin.</LI>
-<LI>The prevalent orientation: in Grass GIS the aspect categories represent
+the values of the cells divided by the number of the cells.</li>
+<li>The mean slope, calculated averaging the slope map.</li>
+<li>The length of the directing vector: the length of the vector linking the
+outlet to the center of gravity of the basin.</li>
+<li>The prevalent orientation: in Grass GIS the aspect categories represent
the number degrees of east and they increase counterclockwise: (90deg is North,
180 is West, 270 is South 360 is East). The aspect value 0 is used to
indicate undefined aspect in flat areas with slope=0. We instead
calculate the orientation as the number of degree from north,
-increasing counterclockwise.</LI>
-<LI>The length of main channel: is the length of the longest succession
-of segments that connect a source to the outlet of the basin.</LI>
-<LI>The mean slope of main channel: it is calculated as follows<BR>
-<P ALIGN=CENTER><IMG SRC="description_html_13154be6.gif" WIDTH=195 HEIGHT=53 BORDER=0></P>
+increasing counterclockwise.</li>
+<li>The length of main channel: is the length of the longest succession
+of segments that connect a source to the outlet of the basin.</li>
+<li>The mean slope of main channel: it is calculated as follows<br>
+<p ALIGN=CENTER><IMG SRC="description_html_13154be6.gif" WIDTH=195 HEIGHT=53 BORDER=0></p>
where N is the topological diameter, i.e. the number of links in which the main
-channel can be divided on the basis of the junctions.</LI>
-<LI>The circularity ratio: is the ratio between the area of the basin and the
-area of the circle having the same perimeter of the basin.</LI>
-<LI>The elongation ratio: is the ratio between the diameter of the circle having
-the same area of the basin and the length of the main channel.</LI>
-<LI>The compactness coefficient: is the ratio between the perimeter of the basin
-and the diameter of the circle having the same area of the basin.</LI>
-<LI>The shape factor: is the ratio between the area of the basin and the square
-of the length of the main channel.</LI>
-<LI>The concentration time (Giandotti, 1934):<BR>
-<P ALIGN=CENTER><IMG SRC="description_html_m4b98ba49.gif" WIDTH=172 HEIGHT=54 BORDER=0></P>
+channel can be divided on the basis of the junctions.</li>
+<li>The circularity ratio: is the ratio between the area of the basin and the
+area of the circle having the same perimeter of the basin.</li>
+<li>The elongation ratio: is the ratio between the diameter of the circle having
+the same area of the basin and the length of the main channel.</li>
+<li>The compactness coefficient: is the ratio between the perimeter of the basin
+and the diameter of the circle having the same area of the basin.</li>
+<li>The shape factor: is the ratio between the area of the basin and the square
+of the length of the main channel.</li>
+<li>The concentration time (Giandotti, 1934):<br>
+<p ALIGN=CENTER><IMG SRC="description_html_m4b98ba49.gif" WIDTH=172 HEIGHT=54 BORDER=0></p>
Where A is the area, L the length of the main channel and H the difference between
-the highest and the lowest elevation of the basin.</LI>
-<LI>The mean hillslope length: is the mean of the distances calculated along
+the highest and the lowest elevation of the basin.</li>
+<li>The mean hillslope length: is the mean of the distances calculated along
the flow direction of each point non belonging to the river network from the
-point in which flows into the network.</LI>
-<LI>The magnitudo: is the number of the branches of order 1 following the
-Strahler hierarchy.</LI>
-<LI>The max order: is the order of the basin, following the Strahler hierarchy.</LI>
-<LI>The number of streams: is the number of the branches of the river network.</LI>
-<LI>The total stream length: is the sum of the length of every branches.</LI>
-<LI>The first order stream frequency: is the ratio between the magnitudo and the
-area of the basin.</LI>
-<LI>The drainage density: is the ratio between the total length of the river
-network and the area.</LI>
-<LI>The Horton ratios (Horton, 1945; Strahler, 1957).</LI>
-</UL>
-<H4 CLASS="subheader">Plots</H4>
-<P>The distance-area function, also known as Width Function: in x axis
-is the length and in y axis is the area. The hypsographic curve provides
+point in which flows into the network.</li>
+<li>The magnitudo: is the number of the branches of order 1 following the
+Strahler hierarchy.</li>
+<li>The max order: is the order of the basin, following the Strahler hierarchy.</li>
+<li>The number of streams: is the number of the branches of the river network.</li>
+<li>The total stream length: is the sum of the length of every branches.</li>
+<li>The first order stream frequency: is the ratio between the magnitudo and the
+area of the basin.</li>
+<li>The drainage density: is the ratio between the total length of the river
+network and the area.</li>
+<li>The Horton ratios (Horton, 1945; Strahler, 1957).</li>
+</ul>
+
+<h3>Plots</h3>
+<ul>
+<li>The distance-area function, also known as Width Function: in x axis
+is the length and in y axis is the area.</li>
+<li>The hypsographic curve provides
the distribution of the areas at different altitudes. Each point on the
hypsographic curve has on the y-axis the altitude and on the x-axis the
-percentage of basin surface placed above that altitude. The ipsometric
-curve has the same shape but is dimensionless.</P>
-<H4 CLASS="subheader">Dependencies</H4>
-<UL>
-<LI>Matplotlib</LI>
-<LI>r.stream.basin</LI>
-<LI>r.stream.extract</LI>
-<LI>r.stream.stats</LI>
-<LI>r.stream.distance</LI>
-<LI>r.stream.order</LI>
-<LI>r.wf.py</LI>
-<LI>r.ipso.py</LI>
-</UL>
-<H2 CLASS="header">SEE ALSO</H2>
-<P>r.stream.basin, r.stream.extract, r.stream.stats, r.stream.distance, r.stream.order, r.wf.py, r.ipso.py</P>
-<H2 CLASS="header">REFERENCES</H2>
-<P>Rodriguez-Iturbe I., Rinaldo A. — Fractal River Basins, Chance and Self-Organization. Cambridge Press (2001)</P>
-<P>In Italian: Di Leo M., Di Stefano M., Claps P., Sole A. — Caratterizzazione morfometrica del bacino idrografico in GRASS GIS
-(Morphometric characterization of the catchment in GRASS GIS environment), Geomatics Workbooks n. 9 (2010)</P>
-<H2 CLASS="header">AUTHORS</H2>
-<P>Margherita Di Leo, Massimo Di Stefano, Francesco Di Stefano</P>
-<P><I>Last changed: (Tue, Nov 9, 2010)</I></P>
-</BODY>
-</HTML>
+percentage of basin surface placed above that altitude.</li>
+<li>The ipsometric
+curve has the same shape but is dimensionless.</li>
+</ul>
+<h3>Dependencies</h3>
+<ul>
+<li>Matplotlib</li>
+<li>r.stream.basin</li>
+<li>r.stream.extract</li>
+<li>r.stream.stats</li>
+<li>r.stream.distance</li>
+<li>r.stream.order</li>
+<li>r.wf.py</li>
+<li>r.ipso.py</li>
+</ul>
+
+<h2>SEE ALSO</h2>
+<p>r.stream.basin, r.stream.extract, r.stream.stats, r.stream.distance, r.stream.order, r.wf.py, r.ipso.py, r.watershed
+
+<h2>REFERENCES</h2>
+<p><em>Rodriguez-Iturbe I., Rinaldo A. — Fractal River Basins, Chance and Self-Organization. Cambridge Press (2001)</em>
+<p><em>In Italian: Di Leo M., Di Stefano M., Claps P., Sole A. — Caratterizzazione morfometrica del bacino idrografico in GRASS GIS
+(Morphometric characterization of the catchment in GRASS GIS environment), Geomatics Workbooks n. 9 (2010)</em>
+
+<h2>AUTHORS</h2>
+<p>Margherita Di Leo (dileomargherita AT gmail DOT com), Massimo Di Stefano
+<p><i>Last changed: (Tue, Nov 10, 2010)</i>
+
+
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