On Dec 24, 2008, at 10:00 AM, <grass-user-request@lists.osgeo.org> <grass-user-request@lists.osgeo.org > wrote:
Date: Wed, 24 Dec 2008 08:41:32 +0900
From: SGW00412@nifty.com
Subject: [GRASS-user] <Q>animal's distribution and the altitude
To: grass-user@lists.osgeo.org
Message-ID: <JP200812240841323.4027203@nifty.com>
Content-Type: text/plain; charset=ISO-2022-JP
Dear grass users:
I am a beginner of grass. I wish to express my gratitude for past advices.
I am researching relation between animal's distribution and the altitude.
Animal's distribution is composed of the point vector data. In a word, this is a
location information.
The altitude data was converted from DEM into the raster data.
The rastere data was divided into ten categories by using reclass function.
I want to summarize the frequency distribution of the animal above altitude
level.
However, I do not know the analysis of grass command.
I'll try to itersect with the point vector data and mesh polygon converted form
raster data.
Will this method be appropriate ?
Add a column for elevation to your vector point attribute table. Use r.what.rast to put the elevation (or elevation class) directly into the elevation field of your points table. No need to convert raster to vector.
Michael
On Wed, December 24, 2008 18:12, Michael Barton wrote:
On Dec 24, 2008, at 10:00 AM, <grass-user-request@lists.osgeo.org>
<grass-user-request@lists.osgeo.org
> wrote:
Date: Wed, 24 Dec 2008 08:41:32 +0900
From: SGW00412@nifty.com
Subject: [GRASS-user] <Q>animal's distribution and the altitude
To: grass-user@lists.osgeo.org
Message-ID: <JP200812240841323.4027203@nifty.com>
Content-Type: text/plain; charset=ISO-2022-JP
Dear grass users:
I am a beginner of grass. I wish to express my gratitude for past
advices.
I am researching relation between animal's distribution and the
altitude.
Animal's distribution is composed of the point vector data. In a
word, this is a
location information.
The altitude data was converted from DEM into the raster data.
The rastere data was divided into ten categories by using reclass
function.
I want to summarize the frequency distribution of the animal above
altitude
level.
However, I do not know the analysis of grass command.
I'll try to itersect with the point vector data and mesh polygon
converted form
raster data.
Will this method be appropriate ?
Add a column for elevation to your vector point attribute table. Use
r.what.rast to put the elevation (or elevation class) directly into
the elevation field of your points table. No need to convert raster to
vector.
Or transform your points to raster and use r.coin or r.report with the two
maps.
Moritz