[GRASS-SVN] r71207 - grass/trunk/vector/v.univar

[svn_grass at osgeo.org]

Author: mlennert
Date: 2017-06-22 06:24:21 -0700 (Thu, 22 Jun 2017)
New Revision: 71207

Modified:
   grass/trunk/vector/v.univar/v.univar.html
Log:
v.univar: make difference to v.db.univar clearer in man page


Modified: grass/trunk/vector/v.univar/v.univar.html
===================================================================
--- grass/trunk/vector/v.univar/v.univar.html	2017-06-22 09:57:00 UTC (rev 71206)
+++ grass/trunk/vector/v.univar/v.univar.html	2017-06-22 13:24:21 UTC (rev 71207)
@@ -1,10 +1,14 @@
 <h2>DESCRIPTION</h2>
 
-<em>v.univar</em> calculates univariate statistics of vector map features.
-This includes the number of features counted, minimum, maximum values,
-and range. 
-Variance and standard deviation is calculated only for points if
-<b>type=point</b> is defined.
+<em>v.univar</em> calculates univariate statistics on (by default) an attribute
+of, or, through the <b>-d</b> flag on distance between, vector map features.
+Attributes are read per feature and per category value. This means that if the 
+map contains several features with the same category value, the attribute is 
+read as many times as there are features. On the other hand, if a feature has 
+more than one category value, each attribute value linked to each of the 
+category values of the feature is read. For statistics on one attribute 
+per category value, instead of one attribute per feature and per category,
+see <a href="v.db.univar.html">v.db.univar</a>.
 
 <p>Extended statistics (<b>-e</b>) adds median, 1st and 3rd quartiles, and 90th
 percentile to the output.
@@ -18,7 +22,9 @@
 <ul>
 <li> <b>type=point</b>: point distances are considered;</li>
 <li> <b>type=line</b>: the first point of each line is considered;</li>
-<li> <b>type=area</b>: the centroid of each area is considered.</li>
+<li> <b>type=area</b>: not supported, use <b>type=centroid</b> instead (and see
+	<a href="v.distance.html">v.distance</a> for calculating distances
+	between areas)</li>
 </ul>
 
 <h2>EXAMPLE</h2>
@@ -116,6 +122,7 @@
 <a href="r.univar.html">r.univar</a>,
 <a href="v.db.univar.html">v.db.univar</a>,
 <a href="v.neighbors.html">v.neighbors</a>
+<a href="v.distance.html">v.distance</a>
 </em>