[GRASS-SVN] r65106 - grass/branches/releasebranch_7_0/raster/r.thin
svn_grass at osgeo.org
svn_grass at osgeo.org
Mon Apr 20 07:09:08 PDT 2015
Author: neteler
Date: 2015-04-20 07:09:08 -0700 (Mon, 20 Apr 2015)
New Revision: 65106
Modified:
grass/branches/releasebranch_7_0/raster/r.thin/r.thin.html
Log:
r.thin manual: cosmetics
Modified: grass/branches/releasebranch_7_0/raster/r.thin/r.thin.html
===================================================================
--- grass/branches/releasebranch_7_0/raster/r.thin/r.thin.html 2015-04-20 14:08:53 UTC (rev 65105)
+++ grass/branches/releasebranch_7_0/raster/r.thin/r.thin.html 2015-04-20 14:09:08 UTC (rev 65106)
@@ -1,14 +1,14 @@
<h2>DESCRIPTION</h2>
<em>r.thin</em> scans the named <em>input</em> raster map layer and
-thins non-zero cells that denote linear features into linear features
+thins non-NULL cells that denote linear features into linear features
having a single cell width. Raster lines often need to be thinned
(skeletonizing raster features) to a single pixel width before they can
be transformed to vector data.
<p>
-<em>r.thin</em> will thin only the non-zero cells of the
-named <em>input</em> raster map layer within the current
+<em>r.thin</em> will thin only the non-NULL (no data) raster cells
+of the named <em>input</em> raster map layer within the current
geographic region settings. The cell width of the thinned
<em>output</em> raster map layer will be equal to the cell
resolution of the currently set geographic region. All of
@@ -19,8 +19,8 @@
<em>r.thin</em> will create a new <em>output</em> raster
data file containing the thinned linear features.
<em>r.thin</em> assumes that linear features are encoded
-with positive values on a background of 0's in the
-<em>input</em> raster data file, hence it creates a 0/1
+with positive values on a background of NULL's in the
+<em>input</em> raster data file, hence it creates a NULL/1
output map.
<h2>NOTES</h2>
@@ -113,11 +113,11 @@
<h2>SEE ALSO</h2>
<em>
- <a href="g.region.html">g.region</a>,
- <a href="r.to.vect.html">r.to.vect</a>,
- <a href="v.clean.html">v.clean</a>,
- <a href="wxGUI.vdigit.html">wxGUI vector digitizer</a>,
- <a href="v.build.html">v.build</a>
+<a href="g.region.html">g.region</a>,
+<a href="r.to.vect.html">r.to.vect</a>,
+<a href="v.clean.html">v.clean</a>,
+<a href="wxGUI.vdigit.html">wxGUI vector digitizer</a>,
+<a href="v.build.html">v.build</a>
</em>
<h2>AUTHOR</h2>
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