manual: notes added about max file open limits

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@62069 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.patch/r.patch.html

@@ -75,7 +75,25 @@ layers, while <em>g.rename</em> is used to then assign to the newly-created
 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
+# &lt;domain&gt;      &lt;type&gt;  &lt;item&gt;         &lt;value&gt;
+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>
@@ -94,12 +112,16 @@ r.patch in=$MAPS out=mosaic
 
 <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>
 

raster/r.series.accumulate/r.series.accumulate.html

@@ -99,8 +99,8 @@ 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.
-
+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 @@ 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 character | must be used.
+the map name and the weight the character "|" must be used.
 
 <h2>EXAMPLES</h2>
 
@@ -124,16 +124,18 @@ r.series.accumulate in=MOD11A1.Day,MOD11A1.Night,MYD11A1.Day,MYD11A1.Night out=M
 <h2>SEE ALSO</h2>
 
 <em>
-<a href="r.series.html">r.series</a>,
 <a href="g.list.html">g.list</a>,
-<a href="g.region.html">g.region</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>
 

raster/r.series.interp/r.series.interp.html

@@ -50,8 +50,13 @@ The resulting maps will have the values 200, 300 and 400.
 
 <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>
 

raster/r.series/r.series.html

@@ -49,7 +49,8 @@ negative values, or <em>range=-inf,-200.4</em> to ignore values above -200.4).
 <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 @@ 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.
-
+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 @@ r.series file=mapnames.txt \
 
 <h2>SEE ALSO</h2>
 
-<em><a href="g.list.html">g.list</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>