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Today's Topics:
1. How to increase DEM Resolution - what is possible (MartinMAP)
2. Re: How to increase DEM Resolution - what is possible
(Markus Neteler)
3. Re: Re: can't start GRASS-error setting the coordinate
system? (Markus Neteler)
4. Re: How to increase DEM Resolution - what is possible (MartinMAP)
5. can't start GRASS-error setting the coordinate system?
(Helmut Kudrnovsky)
----------------------------------------------------------------------
Message: 1
Date: Sun, 21 Nov 2010 11:13:17 -0800 (PST)
From: MartinMAP <m...@map-site.de>
Subject: [GRASS-windows] How to increase DEM Resolution - what is
possible
To: grass-windows@lists.osgeo.org
Message-ID: <1290366797770-5760809.p...@n2.nabble.com>
Content-Type: text/plain; charset=us-ascii
Hello,
Im new in this forum and im new to GRASS.
I have a problem and i need to know, if there is a way to solve it with
Grass: I want to make a map from Aladaglar Mountainrange in Turkey for my
bachelor degree. This mountains are up to 3750m high. So I need to build a
high detailed elevationmodel. But the online digital elevation models I can
get are the SRTM 90x90 models.
I dont want to know exactly how, I just want to know IF it is possible to
use that 90x90 images to build a DEM in a resolution of about, to say,
10x10? :)
Thanks!
MAP
--
View this message in context:
http://osgeo-org.1803224.n2.nabble.com/How-to-increase-DEM-Resolution-what-is-possible-tp5760809p5760809.html
Sent from the Grass - Win mailing list archive at Nabble.com.
------------------------------
Message: 2
Date: Sun, 21 Nov 2010 23:03:08 +0100
From: Markus Neteler <nete...@osgeo.org>
Subject: Re: [GRASS-windows] How to increase DEM Resolution - what is
possible
To: MartinMAP <m...@map-site.de>
Cc: grass-windows@lists.osgeo.org
Message-ID:
<aanlktimtfihe0kk0q0dzcem8067bbb9_nymnmspco...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
On Sun, Nov 21, 2010 at 8:13 PM, MartinMAP <m...@map-site.de> wrote:
>
> Hello,
> Im new in this forum and im new to GRASS.
> I have a problem and i need to know, if there is a way to solve it with
> Grass: I want to make a map from Aladaglar Mountainrange in Turkey for my
> bachelor degree. This mountains are up to 3750m high. So I need to build a
> high detailed elevationmodel. But the online digital elevation models I can
> get are the SRTM 90x90 models.
>
> I dont want to know exactly how, I just want to know IF it is possible to
> use that 90x90 images to build a DEM in a resolution of about, to say,
> 10x10? :)
Technically you can, with "r.resamp.inter" in GRASS:
http://grass.osgeo.org/grass64/manuals/html64_user/r.resamp.interp.html
Kepp in mind that since no extra information is coming in, the information
content will not increase unless you add other maps at higher resolution.
There are also the ASTER GDEM data available (30m) but partially
of poor quality - certainly worthwile to check out:
I made once some tests:
http://gfoss.blogspot.com/2009/08/aster-gdem-30m-quality-assessment.html
Cheers
Markus
------------------------------
Message: 3
Date: Sun, 21 Nov 2010 23:06:44 +0100
From: Markus Neteler <nete...@osgeo.org>
Subject: Re: [GRASS-windows] Re: can't start GRASS-error setting the
coordinate system?
To: cove_adrian <covasnianu.adr...@gmail.com>
Cc: grass-windows@lists.osgeo.org
Message-ID:
<aanlktinfqqnz+5nua2402n+azak+5r96m2fqrfe=n...@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
On Sun, Nov 21, 2010 at 4:44 PM, cove_adrian
<covasnianu.adr...@gmail.com> wrote:
>
> And even tried the OSGEO version (400kb). Installed with advanced mode
> (pretty complex and difficult) grass 6.4.0.2. (from desktop tab) and from
> Libs - gdal and gdal-grass plugin.
>
> Same errors, even more now.
Do these programs work
gdal_translate
cs2cs
Just call them to see the help text or crash. This would be a hint
to analyse the problem.
Markus
------------------------------
Message: 4
Date: Mon, 22 Nov 2010 01:24:57 -0800 (PST)
From: MartinMAP <m...@map-site.de>
Subject: [GRASS-windows] Re: How to increase DEM Resolution - what is
possible
To: grass-windows@lists.osgeo.org
Message-ID: <1290417897220-5762068.p...@n2.nabble.com>
Content-Type: text/plain; charset=us-ascii
Thanks! I didnt know, that ASTER GEM are for free! Ill check this out now.
Thanks for that helpful answer!
Greets,
Martin
--
View this message in context:
http://osgeo-org.1803224.n2.nabble.com/How-to-increase-DEM-Resolution-what-is-possible-tp5760809p5762068.html
Sent from the Grass - Win mailing list archive at Nabble.com.
------------------------------
Message: 5
Date: Mon, 22 Nov 2010 10:56:47 +0100 (CET)
From: "Helmut Kudrnovsky" <hel...@web.de>
Subject: [GRASS-windows] can't start GRASS-error setting the
coordinate system?
To: grass-windows@lists.osgeo.org
Cc: covasnianu.adr...@gmail.com
Message-ID: <96771022.6554362.1290419807928.javamail.fm...@mwmweb002>
Content-Type: text/plain; charset="utf-8"
Hi,
>On Sun, Nov 21, 2010 at 4:44 PM, cove_adrian
>< wrote:
>>
>> And even tried the OSGEO version (400kb). Installed with advanced mode
>> (pretty complex and difficult) grass 6.4.0.2. (from desktop tab) and from
>> Libs - gdal and gdal-grass plugin.
>>
>> Same errors, even more now.
I've downloaded the official WinGRASS-6.4.0-1-Setup.exe from
http://grass.osgeo.org/grass64/binary/mswindows/native/
and tried to create a new location with epsg-code 31700, but I can't reproduce
the error, the location is created. the same
with osgeo4w-delivered wingrass64, also there the location is created.
Â
in http://www.spatialreference.org/ref/epsg/31700/ there's noted that epsg
31700 is deprecated and epsg 3844
should be used instead.
Â
can you try the latest nightly build of wingrass64svn from
http://josef.fsv.cvut.cz/wingrass/grass64/ and try again it again
with epsg 31700, 3844 or just any another epsg-code
Â
which windows-version is used: WinXP, WinVista, Win7, 32bit, 64bit etc.?
best regards
Helmut
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