[GRASS-SVN] r33550 - in grass-addons/raster/r.sun_horizon:
r.horizon r.sun2
svn_grass at osgeo.org
svn_grass at osgeo.org
Thu Sep 25 17:18:13 EDT 2008
Author: neteler
Date: 2008-09-25 17:18:13 -0400 (Thu, 25 Sep 2008)
New Revision: 33550
Modified:
grass-addons/raster/r.sun_horizon/r.horizon/description.html
grass-addons/raster/r.sun_horizon/r.sun2/description.html
Log:
r.sun2 example; cosmetics
Modified: grass-addons/raster/r.sun_horizon/r.horizon/description.html
===================================================================
--- grass-addons/raster/r.sun_horizon/r.horizon/description.html 2008-09-25 21:09:13 UTC (rev 33549)
+++ grass-addons/raster/r.sun_horizon/r.horizon/description.html 2008-09-25 21:18:13 UTC (rev 33550)
@@ -1,6 +1,6 @@
<H2>DESCRIPTION</H2>
-<P><B>r.horizon</B> computes the angular height of terrain horizon in
+<B>r.horizon</B> computes the angular height of terrain horizon in
radians. It reads a raster of elevation data and outputs the horizon
outline in one of two modes:
@@ -13,7 +13,8 @@
height in a specific direction. One raster is created for each direction.
</ul>
-<P>The directions are given as azimuthal angles (in degrees), with
+<P>
+The directions are given as azimuthal angles (in degrees), with
the angle starting with 0 towards East and moving counterclockwise
(North is 90, etc.). The calculation takes into account the actual
projection, so the angles are corrected for direction distortions
@@ -25,15 +26,12 @@
LOCATION with x,y coordinate system, where this correction is
not applied.
-
-</P>
-
<H3>Flags:</H3>
<dl>
<dt><B>-d</B>
<dd>Output horizon height in degrees (the default is radians)</dl>
+</dl>
-
<H3>Input parameters:</H3>
<P>The <I>elevin </I>parameter is an input elevation raster file. If
the buffer options are used (see below), this raster should extend
@@ -117,13 +115,13 @@
<H2>EXAMPLE</H2>
+Single point mode:
<div class="code"><pre>
r.horizon elevin=DEM step=30 direction=15 bufferzone=200 coord=47.302,7.365 dist=0.7 > horizon.out
</pre></div>
-<P>raster mode:</P>
-
+Raster map mode (for r.sun2):
<div class="code"><pre>
r.horizon elevin=DEM step=30 e_buff=20 horizon=horangle dist=0.7 maxdistance=2000
</pre></div>
@@ -131,7 +129,8 @@
<H2>SEE ALSO</H2>
-<em><A HREF="r.sun.html">r.sun</A>,
+<em>
+<A HREF="r.sun2.html">r.sun2</A>,
<A HREF="r.los.html">r.los</A></em>
<H2>REFERENCES</H2>
@@ -144,13 +143,12 @@
<a href="http://www.isess.org/papers.asp?year=2007">International Symposium on
Environmental Software Systems</a>, Prague, 2007</P>
<P>Neteler M., Mitasova H., 2004. Open Source GIS: A GRASS GIS
-Approach, <A HREF="http://www.springer.com/east/home?SGWID=5-102-22-173664736-0&changeHeader=true">Kluwer
-Academic Publishers/Springer</A>, Boston. ISBN: 1-4020-8064-6, 2nd
-Edition 2004 (reprinted 2005), 424 pages
+Approach, <A HREF="http://www.springer.com/geography/gis+cartography/book/978-0-387-35767-6">Springer</A>, New York.
+ISBN: 1-4020-8064-6, 2nd Edition 2004 (reprinted 2005), 424 pages
</P>
<P>Project <A HREF="http://re.jrc.ec.europa.eu/pvgis/">PVGIS</A>, European
Commission, DG Joint Research Centre 2001-2007</P>
-<P>Suri M., Hofierka J., <SPAN STYLE="font-weight: medium">2004</SPAN>.
+<P>Suri M., Hofierka J., 2004.
A New GIS-based Solar Radiation Model and Its Application for
Photovoltaic Assessments. <A HREF="http://www.blackwellpublishing.com/toc.asp?ref=1361-1682">Transactions
in GIS</A>, 8(2), 175-190</P>
@@ -168,7 +166,6 @@
© 2007, Thomas Huld, Tomas Cebecauer, Jaroslav Hofierka, Marcel Suri
</P>
-
<ADDRESS STYLE="margin-bottom: 0.2in"><A HREF="mailto:Thomas.Huld at jrc.it">Thomas.Huld at jrc.it</A>
<A HREF="mailto:Tomas.Cebecauer at jrc.it">Tomas.Cebecauer at jrc.it</A>
<A HREF="mailto:hofi at geomodel.sk">hofierka at geomodel.sk</A>
@@ -176,4 +173,3 @@
</ADDRESS>
<P><I>Last changed: $Date: 2007/05/16 16:22:04 $</I>
-</P>
Modified: grass-addons/raster/r.sun_horizon/r.sun2/description.html
===================================================================
--- grass-addons/raster/r.sun_horizon/r.sun2/description.html 2008-09-25 21:09:13 UTC (rev 33549)
+++ grass-addons/raster/r.sun_horizon/r.sun2/description.html 2008-09-25 21:18:13 UTC (rev 33550)
@@ -9,8 +9,7 @@
topography is optionally incorporated. This can be done either by calculating
the shadowing effect directly from the digital elevation model or using rasters
of the horizon height which is much faster. The horizon rasters can be
-constructed using <a href="r.horizon.html">
-r.horizon</a>.
+constructed using <a href="r.horizon.html">r.horizon</a>.
<P>
For latitude-longitude coordinates it requires that the elevation map is in meters.
The rules are:
@@ -80,9 +79,11 @@
<p>The solar irradiation or irradiance raster maps <i>beam_rad</i>, <i>diff_rad</i>
, <i>refl_rad</i> are computed for a given day <i>day,</i> latitude <i>lat
(latin), </i>elevation <i>elevin</i>, slope <i>slopein</i> and aspect <i>
-aspin</i> raster files. For convenience, the output raster given as <i>glob_rad<i> will output the sum of the three radiation components. The program uses the Linke atmosphere turbidity factor
-and ground albedo coefficient. A default, single value of Linke factor is
-<i>lin</i>=3.0 and is near the annual average for rural-city areas. The Linke
+aspin</i> raster maps. For convenience, the output raster given as <i>glob_rad</i>
+will output the sum of the three radiation components. The program uses
+the Linke atmosphere turbidity factor and ground albedo coefficient.
+A default, single value of Linke factor is <i>lin</i>=3.0 and
+is near the annual average for rural-city areas. The Linke
factor for an absolutely clear atmosphere is <i>lin</i>=1.0. See notes below
to learn more about this factor. The incidence solar angle is the angle between
horizon and solar beam vector. The solar radiation maps for given day are
@@ -186,6 +187,7 @@
Spearfish example (without considering cast shadows):
<div class="code"><pre>
+r.horizon elevation.dem step=30 e_buff=20 horizon=horangle dist=0.7 maxdistance=2000
r.sun2 elevation.dem horizon=horangle aspin=aspect slopein=slope glob_rad=global_rad day=180 time=14
</pre></div>
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