[GRASS-user] Surface spot interpolates heights for pointis in a feature class from surface

[Moskovitz, Bob]

You should take a look at v.what.rast.  According to the manual:
	v.what.rast reads raster value for each point in the vector and updates col column in vector attribute table by this value. 
	The column should be type number (integer, float, double, ... ). If more points have the same category, attribute value is set 
	to NULL. If raster values is NULL, attribute value is set to NULL.

-Bob


Bob Moskovitz
Seismic Hazards Mapping Program
California Geological Survey

CONFIDENTIALITY NOTICE: This communication is intended only for the use of the individual or entity to which it is addressed. This message contains information from the State of California, California Geological Survey, which may be privileged, confidential and exempt from disclosure under applicable law, including the Electronic Communications Privacy Act. If the reader of this communication is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this communication is strictly prohibited.


-----Original Message-----
From: grass-user-bounces at lists.osgeo.org [mailto:grass-user-bounces at lists.osgeo.org] On Behalf Of Susana Arciniegas
Sent: Friday, July 23, 2010 3:26 PM
To: grass-user at lists.osgeo.org
Subject: [GRASS-user] Surface spot interpolates heights for pointis in a feature class from surface
Importance: High

I found tool "Tools for point layer (Herramientas para capas de puntos)/ Interpolate Raster (Muestrear capa raster)" in SEXTANTE, it is similar to "Surface Spot" of ArcGis, I need to found it, in Grass GIS 6.40ORC6, but I can not.
The tool interpolates heights for points in a feature class from a surface (ex: DTM). The point heights (interpolate heights) are stored in a field that's added to the input feature class.
Thank you for your answer
_______________________________________________
grass-user mailing list
grass-user at lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/grass-user