Thanks Richard,
but elevation data is on a raster map.
The idea I had was to generate point vector files with the highest and
lowest point and then generate the colums with y and y coordinates...
but it seems to me like a complicated way and I was wondering if there
is a possibility to do that with r.mapcalc.... I think the functions are
ther, but how combining?
Perhaps someone knows a way?
Thanks
MAnuel
Richard Chirgwin schrieb:
[EMAIL PROTECTED] wrote:
Send grass-user mailing list submissions to
[email protected]
To subscribe or unsubscribe via the World Wide Web, visit
http://lists.osgeo.org/mailman/listinfo/grass-user
or, via email, send a message with subject or body 'help' to
[EMAIL PROTECTED]
You can reach the person managing the list at
[EMAIL PROTECTED]
When replying, please edit your Subject line so it is more specific
than "Re: Contents of grass-user digest..."
Today's Topics:
1. highest and lowest point in catchment (Dr. Manuel Seeger)
2. SHELL Variable problem: Workaround (Peter L?we)
3. Re: SHELL variable not set (Martin Wegmann)
4. Re: SHELL variable not set (Glynn Clements)
5. Re: SHELL variable not set (Hamish)
6. Re: SHELL variable not set (Markus Neteler)
7. Re: Building wxgrass vdigit (Martin Landa)
8. segment_format error with r.watershed (Wes Kent)
9. union features of vector (Alfredo Alessandrini)
10. Re: Snap across layers (Martin Landa)
----------------------------------------------------------------------
Message: 1
Date: Tue, 29 Jan 2008 10:01:20 +0100
From: "Dr. Manuel Seeger" <[EMAIL PROTECTED]>
Subject: [GRASS-user] highest and lowest point in catchment
To: GRASSLIST <[email protected]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Hello all,
I hope the questions does not seem too simple, but I have now no real
good idea how to solve this simple problem:
I need to find the highest and the lowest point within catchments
WITH their coordinates (and to get the information about altitude and
coordinates, of course)
thanks for hints!
manuel
Manuel - hope I'm not being silly here, but I'd consider just using an
SQL select directly to the data store.
Select max( <altitude column> ), <latitude column>, <longitude
column>, <any other column you want> from <table> where <boundary
conditions of catchment>
Select min( <altitude column> ), <latitude column>, <longitude column>
<any other column you want> from <table> <boundary conditions of
catchment>
If you have to, you could extract only the catchment to a separate
vector, so that you don't need to fool around with complex boundary
conditions.
But I'm sure that a genuine Grass expert will have a simpler solution
than this ...
Cheers,
Richard
_______________________________________________
grass-user mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/grass-user
--
_______________________________________________________________________
Dr. Manuel Seeger
Wiss. Assistent Scientific Assistant
Physische Geographie Dpt. of Physical Geography
FB VI - Geographie/Geowissenschaften Geography/Geosciences
Universität Trier University of Trier
D - 54286 Trier
Tel.: +49-651-201 4557
Fax: +49-651-201 3976
Web: http://www-neu.uni-trier.de/index.php?id=9607
_______________________________________________
grass-user mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/grass-user
