Maciek wrote:
> For heterogenous input data I'd try the nn algorithm in
> nnbathy, through r.surf.nnbathy
> (http://grass.osgeo.org/wiki/Addons#r.surf.nnbathy).
It is great for sparse points, but for contour lines + hydrological
modeling it is not the best. See nn valley staircase effect in
http
> These are my data sets attached:
>
> 1. Dem_CF.tif is the DEM
> 2. TRMMLast1day.tif is the rainfall data
>
> On Fri, Jul 9, 2010 at 2:53 PM, Sandile Gumede
> wrote:
>
>> Is there any one who can help me?
I'm away this week, so I can only add a quick response:
I still see two "glaring" probl
W dniu 09.07.2010 12:29, David Townshend pisze:
I have a couple of questions about DEMs, and how they work in GRASS. My
application is hydrological and hydraulic analysis, and at the moment I'm
investigating using r.sim.water to generate floodlines.
Usually, for this sort of analysis, I would h
Thanks for all the replies. It seems that I forgot to specify the format (
_txt) in the Required tab. So, it fixed the problem and now I can import all
the waypoints and tracks. However, I am puzzled with one detail. As I
mentioned:
- I set my GPS unit to record measurements in UTM,
- the text fi
Le 09/07/10 17:36, Giovanni Manghi a écrit :
>
>> again ;-)
>> in root a make
>> apt-get update && apt-get install libgdal-ecw-src
>>
>> an erreur
>> E: Impossible de trouver le paquet libgdal-ecw-src
>>
>> ... so I dont know
>>
>> see you :-)
>>
>
> did you added the ubuntugis-unstable p
Bulent wrote:
> I am back with another issue, again ' v.in.gpsbabel' module!
> My GPS unit records data in UTM projection with WGS84 datum. I
> just attempted to import the waypoints into GRASS using a
> Garmin MapSource text (tab delimited) file.
$ gpsbabel --help | grep -i garmin
garmin
> again ;-)
> in root a make
> apt-get update && apt-get install libgdal-ecw-src
>
> an erreur
> E: Impossible de trouver le paquet libgdal-ecw-src
>
> ... so I dont know
>
> see you :-)
did you added the ubuntugis-unstable ppa repository?
I believe the package is part of that particular r
Le 09/07/10 16:26, Giovanni Manghi a écrit :
>
>> I just tested the procedure, and the package gdal-ecw-src is not
>> found ...
>>
>
> the library is called
>
> libgdal-ecw-src
>
>
>
> cheers
>
> -- Giovanni --
>
>
again ;-)
in root a make
apt-get update && apt-get install libgdal-ecw-s
output:
Gradient
Sinuosity
stream reach length
down valley distance
This is a thought- and I have no idea how to implement it. I would
like to calculate thalweg distance of a stream. from the start point
(user input) search xmeters to the east and west find the minimum -
move one grid cell south
I came across this when looking previously at v.to.db. I noticed there
is an option to upload line sinuosity. I haven't tried it, but I'd be
curious to know if it solves your problem.
Using "option = sinuous" ?
http://grass.itc.it/grass64/manuals/html64_user/v.to.db.html
Mark
On Fri, Jul 9, 2
All:
I would like to calculate channel sinuosity on many streams that I
have an upstream and downstream GPS point. Is there such a module in
GRASS? I am trying to avoid doing this by hand.
kindest regards,
--
Stephen Sefick
| Auburn University
Bulent Arikan wrote:
> Hi,
>
> Hamish, thanks for your suggestion about fixing the GPS Babel application
> issue. It worked and now I can run the module.
>
> I am back with another issue, again ' v.in.gpsbabel' module! My GPS unit
> records data in UTM projection with WGS84 datum. I just attempted
> I just tested the procedure, and the package gdal-ecw-src is not
> found ...
the library is called
libgdal-ecw-src
cheers
-- Giovanni --
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Le 09/07/10 12:35, Giovanni Manghi a écrit :
> Hi,
>
>
>
>> 1 / I'm on Ubuntu 10 and Grass6.4 since two days and I try to open the
>> training ECW orthophotos with GRASS. Does someone could give me the
>> procedure
>>
> have a look here
>
> http://trac.osgeo.org/ubuntugis/wiki/UserTutorials
Hi,
Hamish, thanks for your suggestion about fixing the GPS Babel application
issue. It worked and now I can run the module.
I am back with another issue, again ' v.in.gpsbabel' module! My GPS unit
records data in UTM projection with WGS84 datum. I just attempted to import
the waypoints into GRA
Is there any one who can help me?
On Wed, Jul 7, 2010 at 3:15 PM, Sandile Gumede wrote:
> Hi,
>
> I've tried to sort out the issue of the region resolution. Now when I'm
> running v.rast.stats it says:
>
> ERROR: No categories found in raster map
>
> Here is the script I'm running thats giving m
I was not aware of the -p and -g flags
Nicer and nicer every time
On Thu, Jul 8, 2010 at 9:43 PM, Hamish wrote:
> Daniel wrote:
>> Complementing Varun response, take a look at the r.proj manual page
>> http://grass.ibiblio.org/grass65/manuals/html65_user/r.proj.html
>>
>> Specially the Notes
On Fri, Jul 9, 2010 at 12:50 PM, Hamish wrote:
>
> David wrote:
> > I have a couple of questions about DEMs, and how they work in GRASS.
> > My application is hydrological and hydraulic analysis, and at the moment
> > I'm investigating using r.sim.water to generate floodlines.
> >
> > Usually, for
Bulent Arikan wrote:
> I am running 6.5 svn on Snow Leopard. I am trying to import
> points and tracks from a Garmin device (connected via USB).
> Using GPS Babel (v 1.4.1 for Mac), I prepared several files
> (.txt, .gdb, and .gpi) and tried to import these using
> v.in.gpsbabel (UTM wgs84 location
David wrote:
> I have a couple of questions about DEMs, and how they work in GRASS.
> My application is hydrological and hydraulic analysis, and at the moment
> I'm investigating using r.sim.water to generate floodlines.
>
> Usually, for this sort of analysis, I would have 5m contours for the
> cat
Hi,
> 1 / I'm on Ubuntu 10 and Grass6.4 since two days and I try to open the
> training ECW orthophotos with GRASS. Does someone could give me the
> procedure
have a look here
http://trac.osgeo.org/ubuntugis/wiki/UserTutorials
cheers
-- Giovanni --
_
Hi
I have a couple of questions about DEMs, and how they work in GRASS. My
application is hydrological and hydraulic analysis, and at the moment I'm
investigating using r.sim.water to generate floodlines.
Usually, for this sort of analysis, I would have 5m contours for the
catchment and a detaile
Hello
I'm still a neophyte in GRASS. And I have two questions:
1 / I'm on Ubuntu 10 and Grass6.4 since two days and I try to open the
training ECW orthophotos with GRASS. Does someone could give me the
procedure
thank you
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Hi,
I am running 6.5 svn on Snow Leopard. I am trying to import points and
tracks from a Garmin device (connected via USB). Using GPS Babel (v 1.4.1
for Mac), I prepared several files (.txt, .gdb, and .gpi) and tried to
import these using v.in.gpsbabel (UTM wgs84 location) –k flag checked–. I am
g
Hello Micha,
Can you please put all the steps including the steps for the DEM because I
tried to duplicate your steps and when I get to the step of
v.rast.stats, I get an error saying
No categories found in raster map.
I tried even to match region resolutions of the two raster maps with
g.regio
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