[GRASS-SVN] r51451 - grass/trunk/vector/v.net.allpairs
svn_grass at osgeo.org
svn_grass at osgeo.org
Sun Apr 15 03:34:46 EDT 2012
Author: mmetz
Date: 2012-04-15 00:34:46 -0700 (Sun, 15 Apr 2012)
New Revision: 51451
Modified:
grass/trunk/vector/v.net.allpairs/main.c
grass/trunk/vector/v.net.allpairs/v.net.allpairs.html
Log:
update documentation
Modified: grass/trunk/vector/v.net.allpairs/main.c
===================================================================
--- grass/trunk/vector/v.net.allpairs/main.c 2012-04-15 06:54:51 UTC (rev 51450)
+++ grass/trunk/vector/v.net.allpairs/main.c 2012-04-15 07:34:46 UTC (rev 51451)
@@ -4,6 +4,7 @@
* MODULE: v.net.allpairs
*
* AUTHOR(S): Daniel Bundala
+ * Markus Metz
*
* PURPOSE: Shortest paths between all nodes
*
@@ -222,7 +223,7 @@
}
}
}
- /* check for duplicate cats */
+ /* check for duplicate cats ? */
G_message(_("Writing data into the table..."));
G_percent_reset();
Modified: grass/trunk/vector/v.net.allpairs/v.net.allpairs.html
===================================================================
--- grass/trunk/vector/v.net.allpairs/v.net.allpairs.html 2012-04-15 06:54:51 UTC (rev 51450)
+++ grass/trunk/vector/v.net.allpairs/v.net.allpairs.html 2012-04-15 07:34:46 UTC (rev 51451)
@@ -1,24 +1,17 @@
<h2>DESCRIPTION</h2>
-<em>v.net.allpairs</em> computes the shortest path between each select
-node and all other nodes.
+<em>v.net.allpairs</em> computes the shortest path between each selected
+node and all other selected nodes.
<h2>NOTES</h2>
-An attribute table is created and linked to <b>layer</b>. The table
+An attribute table is created and linked to layer 1. The table
contains three columns: <em>cat</em>, <em>to_cat</em>, <em>cost</em>.
Each entry denotes the cost of the shortest path from <em>cat</em> to
<em>to_cat</em>. If the cost is negative then no path exists. If points
are specified by <b>cats, layer</b> or <b>where</b> parameters then the
-table is filled only for the selected points. In other words, <em>cat</em>
-columns contains only selected points but the distances are computed and
-updated for <em>all</em> other nodes.<br>
-If flag <b>-a</b> is set then new points are added on nodes without points.
-These points have the largest category. Precisely, the category of each new
-point is larger than any of the old categories. If the flag is not set
-then no new points are created and hence the attribute table stores the
-costs only between the points already present in the input. Output consists
-of all points mentioned in either of the columns.<br>
+table is filled only for the selected points.
+<br>
If <b>abcolumn</b> is not given then then the same costs are used for
forward and backward arcs.
@@ -62,6 +55,7 @@
<h2>AUTHORS</h2>
Daniel Bundala, Google Summer of Code 2009, Student<br>
-Wolf Bergenheim, Mentor
+Wolf Bergenheim, Mentor<br>
+Markus Metz
<p><i>Last changed: $Date$</i>
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