[GRASS-SVN] r59976 - grass-addons/grass6/vector/v.in.gshhs

[svn_grass at osgeo.org]

Author: hamish
Date: 2014-04-30 03:56:22 -0700 (Wed, 30 Apr 2014)
New Revision: 59976

Modified:
   grass-addons/grass6/vector/v.in.gshhs/description.html
Log:
add example showing how to convert shorelines to filled areas maintaining islands and lakes

Modified: grass-addons/grass6/vector/v.in.gshhs/description.html
===================================================================
--- grass-addons/grass6/vector/v.in.gshhs/description.html	2014-04-30 10:23:09 UTC (rev 59975)
+++ grass-addons/grass6/vector/v.in.gshhs/description.html	2014-04-30 10:56:22 UTC (rev 59976)
@@ -65,6 +65,25 @@
 These world borders and rivers may be not very accurate.
 
 
+<h2>EXAMPLE</h2>
+
+Convert shorelines to land areas. In the imported shoreline map, mainland
+is category 1, islands in lakes is category 3. Categories 2 and 4 are lakes
+and ponds on islands in lakes, so we'll exclude them as holes.
+
+<div class="code"><pre>
+v.in.gshhs in=gshhs_f.b out=gshhs_shoreline_full
+v.extract in=gshhs_shoreline_full out=gshhs_landlines_full list=1,3
+v.type in=gshhs_landlines_full out=gshhs_shoreboundary_full type=line,boundary
+v.centroids in=gshhs_shoreboundary_full out=gshhs_land_full op=add
+</pre></div>
+
+At this point areas are categorized in order of shoreline length. Area cats
+1 and 2 are Eurasia (2 is the part in the Western Hemisphere), area cat 3 is
+Africa, 4 is North America, 5 is South America, 6 is Australia, 7 is
+Greenland, and so on.
+
+
 <h2>SEE ALSO</h2>
 
 <em>
@@ -86,7 +105,7 @@
 
 The gshhstograss tool was written by Simon Cox and Paul Wessel.<br>
 The original version of v.in.gshhs was written by Bob Covill based on gshhstograss.<br> 
-Modifications and updates by Markus Neteler and Markus Metz.
+Modifications and updates by Markus Neteler, Markus Metz, and Hamish Bowman.
 
 <p>
 <i>Last changed: $Date$</i>