[GRASS-SVN] r62070 - in grass/branches/releasebranch_7_0/raster: r.patch r.series r.series.accumulate r.series.interp
svn_grass at osgeo.org
svn_grass at osgeo.org
Wed Sep 24 06:20:45 PDT 2014
Author: neteler
Date: 2014-09-24 06:20:45 -0700 (Wed, 24 Sep 2014)
New Revision: 62070
Modified:
grass/branches/releasebranch_7_0/raster/r.patch/r.patch.html
grass/branches/releasebranch_7_0/raster/r.series.accumulate/r.series.accumulate.html
grass/branches/releasebranch_7_0/raster/r.series.interp/r.series.interp.html
grass/branches/releasebranch_7_0/raster/r.series/r.series.html
Log:
manual: notes added about max file open limits
Modified: grass/branches/releasebranch_7_0/raster/r.patch/r.patch.html
===================================================================
--- grass/branches/releasebranch_7_0/raster/r.patch/r.patch.html 2014-09-24 13:16:23 UTC (rev 62069)
+++ grass/branches/releasebranch_7_0/raster/r.patch/r.patch.html 2014-09-24 13:20:45 UTC (rev 62070)
@@ -75,9 +75,27 @@
composite (patched) raster map layer the name of the original raster map
layer.
-<p><em>r.patch</em> creates support files for the patched, composite output map.
+<p>
+<em>r.patch</em> creates support files for the patched, composite output map.
+<p>
+Number of raster maps to be processed is given by the limit of the
+operating system. For example, both the hard and soft limits are
+typically 1024. The soft limit can be changed with e.g. <tt>ulimit -n
+1500</tt> (UNIX-based operating systems) but not higher than the hard
+limit. If it is too low, you can as superuser add an entry in
+<div class="code"><pre>
+/etc/security/limits.conf
+# <domain> <type> <item> <value>
+your_username hard nofile 1500
+</pre></div>
+
+This would raise the hard limit to 1500 file. Be warned that more
+files open need more RAM. See also the Wiki page
+<a href="http://grasswiki.osgeo.org/wiki/Large_raster_data_processing">Hints for large raster data processing</a>.
+
+
<h2>EXAMPLE</h2>
Create a list of maps matching a pattern, extend the region to include them
@@ -94,12 +112,16 @@
<h2>SEE ALSO</h2>
-<em><a href="g.region.html">g.region</a></em>,
-<em><a href="g.remove.html">g.remove</a></em>,
-<em><a href="g.rename.html">g.rename</a></em>,
-<em><a href="r.mapcalc.html">r.mapcalc</a></em>,
-<em><a href="r.support.html">r.support</a></em>,
-<em><a href="v.mkgrid.html">v.mkgrid</a></em>
+<em>
+<a href="g.region.html">g.region</a>,
+<a href="g.remove.html">g.remove</a>,
+<a href="g.rename.html">g.rename</a>,
+<a href="r.mapcalc.html">r.mapcalc</a>,
+<a href="r.support.html">r.support</a>,
+<a href="v.mkgrid.html">v.mkgrid</a>
+</em>
+<p>
+<a href="http://grasswiki.osgeo.org/wiki/Large_raster_data_processing">Hints for large raster data processing</a>
<h2>AUTHOR</h2>
Modified: grass/branches/releasebranch_7_0/raster/r.series/r.series.html
===================================================================
--- grass/branches/releasebranch_7_0/raster/r.series/r.series.html 2014-09-24 13:16:23 UTC (rev 62069)
+++ grass/branches/releasebranch_7_0/raster/r.series/r.series.html 2014-09-24 13:20:45 UTC (rev 62070)
@@ -49,7 +49,8 @@
<p>Linear regression (slope, offset, coefficient of determination, t-value) assumes equal time intervals.
If the data have irregular time intervals, NULL raster maps can be inserted into time series
to make time intervals equal (see example).
-<p>Number of raster maps to be processed is given by the limit of the
+<p>
+Number of raster maps to be processed is given by the limit of the
operating system. For example, both the hard and soft limits are
typically 1024. The soft limit can be changed with e.g. <tt>ulimit -n
1500</tt> (UNIX-based operating systems) but not higher than the hard
@@ -62,22 +63,24 @@
</pre></div>
This would raise the hard limit to 1500 file. Be warned that more
-files open need more RAM.
-
+files open need more RAM. See also the Wiki page
+<a href="http://grasswiki.osgeo.org/wiki/Large_raster_data_processing">Hints for large raster data processing</a>.
+<p>
For each map a weighting factor can be specified using the <em>weights</em> option.
Using weights can be meaningful when computing sum or average of maps with different
temporal extent. The default weight is 1.0. The number of weights must be identical
with the number of input maps and must have the same order. Weights can also be specified in the
input file.
-<p>Use the <em>file</em> option to analyze large amount of raster maps without
-hitting open files limit and the size limit of command line arguments.
+<p>
+Use the <em>file</em> option to analyze large amount of raster maps
+without hitting open files limit and the size limit of command line arguments.
The computation is slower than the <em>input</em> option method.
For every sinlge row in the output map(s)
all input maps are opened and closed. The amount of RAM will rise linear
with the number of specified input maps. The input and file options are mutually exclusive.
Input is a text file with a new line separated list of raster map names and optional weights.
-As separator between the map name and the weight the charachter | must be used.
+As separator between the map name and the weight the character "|" must be used.
<h2>EXAMPLES</h2>
@@ -143,8 +146,13 @@
<h2>SEE ALSO</h2>
-<em><a href="g.mlist.html">g.mlist</a></em>,
-<em><a href="g.region.html">g.region</a></em>
+<em>
+<a href="g.list.html">g.list</a>,
+<a href="g.region.html">g.region</a>,
+<a href="r.series.accumulate.html">r.series.accumulate</a>
+</em>
+<p>
+<a href="http://grasswiki.osgeo.org/wiki/Large_raster_data_processing">Hints for large raster data processing</a>
<h2>AUTHOR</h2>
Modified: grass/branches/releasebranch_7_0/raster/r.series.accumulate/r.series.accumulate.html
===================================================================
--- grass/branches/releasebranch_7_0/raster/r.series.accumulate/r.series.accumulate.html 2014-09-24 13:16:23 UTC (rev 62069)
+++ grass/branches/releasebranch_7_0/raster/r.series.accumulate/r.series.accumulate.html 2014-09-24 13:20:45 UTC (rev 62070)
@@ -99,8 +99,8 @@
</pre></div>
This would raise the hard limit to 1500 file. Be warned that more
-files open need more RAM.
-
+files open need more RAM. See also the Wiki page
+<a href="http://grasswiki.osgeo.org/wiki/Large_raster_data_processing">Hints for large raster data processing</a>.
<p>
Use the <em>file</em> option to analyze large amount of raster maps
without hitting open files limit and the size limit of command line
@@ -110,7 +110,7 @@
number of specified input maps. The input and file options are
mutually exclusive. Input is a text file with a new line separated
list of raster map names and optional weights. As separator between
-the map name and the weight the character | must be used.
+the map name and the weight the character "|" must be used.
<h2>EXAMPLES</h2>
@@ -124,16 +124,18 @@
<h2>SEE ALSO</h2>
<em>
-<a href="r.series.html">r.series</a>,
-<a href="g.mlist.html">g.mlist</a>,
-<a href="g.region.html">g.region</a>
+<a href="g.list.html">g.list</a>,
+<a href="g.region.html">g.region</a>,
+<a href="r.series.html">r.series</a>
</em>
+<p>
+<a href="http://grasswiki.osgeo.org/wiki/Large_raster_data_processing">Hints for large raster data processing</a>
<h2>REFERENCES</h2>
<ul>
<li> Jones, G.V., Duff, A.A., Hall, A., Myers, J.W., 2010.
- Spatial Analysis of Climate in Winegrape Growing Regions in the
+ Spatial analysis of climate in winegrape growing regions in the
Western United States. Am. J. Enol. Vitic. 61, 313-326.</li>
</ul>
Modified: grass/branches/releasebranch_7_0/raster/r.series.interp/r.series.interp.html
===================================================================
--- grass/branches/releasebranch_7_0/raster/r.series.interp/r.series.interp.html 2014-09-24 13:16:23 UTC (rev 62069)
+++ grass/branches/releasebranch_7_0/raster/r.series.interp/r.series.interp.html 2014-09-24 13:20:45 UTC (rev 62070)
@@ -50,8 +50,13 @@
<h2>SEE ALSO</h2>
-<em><a href="r.series.html">r.series</a></em>
-<em><a href="g.region.html">g.region</a></em>
+<em>
+<a href="g.region.html">g.region</a>,
+<a href="r.series.html">r.series</a>,
+<a href="r.series.accumulate.html">r.series.accumulate</a>
+</em>
+<p>
+<a href="http://grasswiki.osgeo.org/wiki/Large_raster_data_processing">Hints for large raster data processing</a>
<h2>AUTHOR</h2>
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