[GRASS-SVN] r62592 - grass/branches/develbranch_6/vector

[svn_grass at osgeo.org]

Author: neteler
Date: 2014-11-04 07:04:07 -0800 (Tue, 04 Nov 2014)
New Revision: 62592

Modified:
   grass/branches/develbranch_6/vector/vectorintro.html
Log:
vectorintro.html: partial sync to trunk

Modified: grass/branches/develbranch_6/vector/vectorintro.html
===================================================================
--- grass/branches/develbranch_6/vector/vectorintro.html	2014-11-04 15:03:45 UTC (rev 62591)
+++ grass/branches/develbranch_6/vector/vectorintro.html	2014-11-04 15:04:07 UTC (rev 62592)
@@ -71,10 +71,10 @@
 non-topological GIS if two areas shared a common border that border
 would be digitized two times and also stored in duplicate. In a
 topological GIS this border exists once and is shared between two
-areas.  Topological represenation of vector data helps to produce and
+areas.  Topological representation of vector data helps to produce and
 maintain vector maps with clean geometry as well as enables certain
 analyses that can not be conducted with non-topological or spaghetti
-data. In GRASS topological data are refered to as level 2 data and
+data. In GRASS, topological data are refered to as level 2 data and
 spaghetti data is referred to as level 1.
 <p>
 Sometimes topology is not necessary and the additional memory and
@@ -100,12 +100,12 @@
 <li> volume: a 3D corpus, the topological composition of faces and kernel (not yet implemented). </li>
 </ul>
 <p>
-Note that all lines and boundaries can be polylines (with vertices in between).
+Lines and boundaries can be composed of multiple vertices.
 <p>
 Area topology also holds information about isles. These isles are located
 within that area, not touching the boundaries of the outer area. Isles
-consist of one or more areas and are used internally to maintain correct
-topology for areas.
+are holes inside the area, and can consist of one or more areas. They are used 
+internally to maintain correct topology for areas.
 
 <p>
 The <a href="v.type.html">v.type</a> module can be used to convert
@@ -124,8 +124,8 @@
 <p>
 Many operations including extraction, queries, overlay, and export will
 only act on features which have been assigned a category number. Typically
-a centroid will hold the attribute data for the area between it and its
-boundaries. Boundaries are not typically given a category ID as it would be
+a centroid will hold the attribute data for the area with which the centroid is 
+associated. Boundaries are not typically given a category ID as it would be
 ambiguous as to which area either side of it the attribute data would belong
 to. An exception might be when the boundary between two crop-fields is the
 center-line of a road, and the category information is an index to the road
@@ -219,12 +219,12 @@
 the table must be populated with one row per category (using <a href="v.to.db.html">v.to.db</a>).
 However, this can be performed in a single step using <a href="v.db.addtable.html">v.db.addtable</a>
 along with the definition of table column types. Column adding and dropping
-can be done with <a HREF="v.db.addcol.html">v.db.addcol</a> and
-<a HREF="v.db.dropcol.html">v.db.dropcol</a>. A table column can be renamed with
-<a HREF="v.db.renamecol.html">v.db.renamecol</a>. To drop a table from a map, use
-<a HREF="v.db.droptable.html">v.db.droptable</a>. Values in a table can be updated
-with <a HREF="v.db.update.html">v.db.update</a>. Tables can be joined with with
-<a HREF="v.db.join.html">v.db.join</a>.
+can be done with <a href="v.db.addcol.html">v.db.addcol</a> and
+<a href="v.db.dropcol.html">v.db.dropcol</a>. A table column can be renamed with
+<a href="v.db.renamecol.html">v.db.renamecol</a>. To drop a table from a map, use
+<a href="v.db.droptable.html">v.db.droptable</a>. Values in a table can be updated
+with <a href="v.db.update.html">v.db.update</a>. Tables can be joined with with
+<a href="v.db.join.html">v.db.join</a>.
 
 
 <h3>Editing vector attributes</h3>
@@ -237,9 +237,9 @@
 <h3>Geometry operations</h3>
 
 The module <a href="v.in.region.html">v.in.region</a> saves the
-current region boundary into a vector area.
+current region extents as a vector area.
 
-Split vector lines can be changes to polylines by
+Split vector lines can be converted to polylines by
 <a href="v.build.polylines.html">v.build.polylines</a>. Long lines can be
 split by <a href="v.split.html">v.split</a> and
 <a href="v.segment.html">v.segment</a>.
@@ -377,14 +377,14 @@
 
 <ul>
 <li><a href="databaseintro.html">Introduction to GRASS database management</a></li>
-<li><a href="rasterintro.html">Introduction to GRASS raster map processing</a></li>
-<li><a href="raster3dintro.html">Introduction to GRASS 3D raster map (voxel) processing</a></li>
+<li><a href="rasterintro.html">Introduction to GRASS raster data processing</a></li>
+<li><a href="raster3dintro.html">Introduction to GRASS 3D raster data (voxel) processing</a></li>
 </ul>
 
 <hr>
 <br>
 <a href="index.html">Main index</a> - <a href="vector.html">vector index</a> - <a href="full_index.html">full index</a>
-<P>© 2008-2012 <a href="http://grass.osgeo.org">GRASS Development Team</a></P>
+<P>© 2008-2014 <a href="http://grass.osgeo.org">GRASS Development Team</a></P>
 
 </body>
 </html>