[GRASS-SVN] r64216 - grass/trunk/temporal/t.vect.observe.strds
svn_grass at osgeo.org
svn_grass at osgeo.org
Fri Jan 16 04:43:15 PST 2015
Author: huhabla
Date: 2015-01-16 04:43:15 -0800 (Fri, 16 Jan 2015)
New Revision: 64216
Modified:
grass/trunk/temporal/t.vect.observe.strds/t.vect.observe.strds.html
Log:
Documentation update
Modified: grass/trunk/temporal/t.vect.observe.strds/t.vect.observe.strds.html
===================================================================
--- grass/trunk/temporal/t.vect.observe.strds/t.vect.observe.strds.html 2015-01-16 11:10:08 UTC (rev 64215)
+++ grass/trunk/temporal/t.vect.observe.strds/t.vect.observe.strds.html 2015-01-16 12:43:15 UTC (rev 64216)
@@ -4,6 +4,30 @@
locations in a space time raster dataset over a period of time using
vector points.
+The first input is a vector map layer with
+vector points. The second input is one or several space time raster
+datasets (STRDS) that should be sampled over time at the vector point
+positions. The space time raster dataset will be sampled over its
+whole temporal extent (from start to end). The range can be adjusted
+using the temporal where condition <em>t_where</em>. A
+column name must be specified for each input space time raster dataset.
+<p>
+As results a new space time vector dataset is generated
+that contains a single
+(new) vector map that links to as many time stamped attribute tables
+as raster map layer are present in the input space time raster dataset.
+Hence, for each time step in the space time raster dataset a new
+attribute table is created. The GRASS GIS Temporal Framework allows to
+time stamp attribute tables that can be linked to a single vector map
+layer.
+<p>
+The module v.what.rast is used internally for sampling the time stamped raster
+map layers. All sampled values of a single time stamped raster map
+layer are written into a new time stamped attribute table.
+<p>
+Use t.vect.db.select to print attribute values of the space
+time vector dataset to stdout.
+
<h2>EXAMPLE</h2>
The example show how to create a space time vector dataset and a vector
@@ -109,6 +133,8 @@
<h2>SEE ALSO</h2>
<em>
+<a href="t.vect.db.select.html">t.vect.db.select</a>,
+<a href="t.vect.what.strds.html">t.vect.what.strds</a>,
<a href="t.create.html">t.create</a>,
<a href="t.info.html">t.info</a>
</em>
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