[GRASS-user] accumulation map from directions map

Hi, is there a way in GRASS to build an accumulation map from a directions map without a dem map? Best regards, Achim ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user

Re: [GRASS-user] matlab scripts r.dominant_dir.m and r.calc_terraflow_dir.m

Mark: I'm looking to use the addon scripts r.dominant_dir.m and r.calc_terraflow_dir.m, however, I have never used Matlab or Freemat. I looked around for some examples or documentation on how to run these scripts for (in?) GRASS, but have not found anything helpful. Can someone point me

Re: [GRASS-user] DXF to UTM32

2009/11/11 Micha Silver mi...@arava.co.il Raffaele Morelli wrote: Hi you all, how can I transform a dxf (imported with v.in.dxf) layer in utm32 coordinates system? I am currently doing some trials with v.transform with no success. Is the dxf in some coordinate system? If yes, then

[GRASS-user] Fwd: New updates

Greetings I want to develop a few modules and functions to use internally in my lab and people would use wxpython GUI in Windows environment. What I want to know is which GRASS version should I start using? 6.4 (stable and available to WINDOWS), 6.5 or 7? What I mean is, in a couple months

Re: [GRASS-user] matlab scripts r.dominant_dir.m and r.calc_terraflow_dir.m

Thank you for the info. I wound up installing GRASS65 and using MFD in r.watershed. I was looking to those scripts to use MFD in GRASS64. So, in short, I'm good to go. Much thanks, Mark On Wed, Nov 18, 2009 at 4:52 AM, Hamish hamis...@yahoo.com wrote: Mark: I'm looking to use the addon

Re: [GRASS-user] DXF to UTM32

Hello, be care full with QGIS layer CRS definitions. By default QGIS will assign WGS84 as layers CRS if layer lacks CRS definition or definition is bogus. Use ogrinfo -ro -so MyFile to check files CRS. Still IIRC DXF doesn't contain CRS definition - You have to look into metadata provided with

Re: [GRASS-user] classification of quickbird data

Hi Christian, Well, I don't think you can do anything about the clouds. You will just have to live with that, or work with radar images, which is an entirely different beast... As for the classification, if you want to remove speckle (small huts for instance), maybe a median filter could help.

[GRASS-user] GRASS-6.5 Runtime Messages

I'm running 6.5 on my Slackware-12.2 server/workstation (Linux salmo 2.6.27.7-smp #1 SMP Thu Nov 20 22:18:02 CST 2008 i686 AMD Athlon(tm) 64 X2 Dual Core Processor 4800+ AuthenticAMD GNU/Linux; gcc-4.2.4). The wxPython UI comes up fine, and there's no problem displaying a soils vector map.

Re: [GRASS-user] Fwd: New updates

Luis Lisboa wrote: I want to develop a few modules and functions to use internally in my lab and people would use wxpython GUI in Windows environment. What I want to know is which GRASS version should I start using? 6.4 (stable and available to WINDOWS), 6.5 or 7? What I mean is, in a couple

Re: [GRASS-user] 25 yr celebration

Radically cool Michael C. Michael Barton Director, Center for Social Dynamics Complexity Professor of Anthropology, School of Human Evolution Social Change Arizona State University Phone: 480-965-6262 Fax: 480-965-7671 www: www.public.asu.edu/~cmbarton,

Re: [GRASS-user] 25 yr celebration

2009/11/18 javier Garcia Prieto fjgarciapri...@hotmail.com: Another logo for the 25 yr celebration of Grass Gis http://grass.osgeo.org/wiki/File:Grass_logo_gold_text_25yr_celebration.png Have 25yr happy anniversary. Cool, just try to keep http://grass.osgeo.org/wiki/GRASS_Art_Gallery

[GRASS-user] help(octave)

hello if anyone already worked or created scripts in octave and grass together, and I need some help on the subject. thanks for any help Estudiante de ultimo semestre de ING. TOPOGRAFICA ___ grass-user mailing list grass-user@lists.osgeo.org

[GRASS-user] NewBee problem importing PostGIS data

I am trying to import some PostGIS data using the following command: v.in.ogr dsn=PG:host=localhost dbname=db1 user=postgres password=postgres output=routes1 layer=route_feature type=line --overwrite However, it says that the features were imported with geometries: Projection of input

[GRASS-user] Watershed Area above a certain point

I have sampling locations that are located along streams. I would like to generate watersheds above a particular sampling location. How can I do this in GRASS, easily? I have thought of finding the flow accumulation values at the points of interest and then using these values in multiple calls

Re: [GRASS-user] Watershed Area above a certain point

r.water.outlet works well for that. Mark On Wed, Nov 18, 2009 at 3:41 PM, stephen sefick ssef...@gmail.com wrote: I have sampling locations that are located along streams.  I would like to generate watersheds above a particular sampling location.  How can I do this in GRASS, easily?  I have

Re: [GRASS-user] v.proj Not Working As Expected

HI, 2009/11/18 Rich Shepard rshep...@appl-ecosys.com: GRASS 6.4.0svn (Oregon):/usr4/grassbase/Oregon v.proj in=highways location=/usr4/grassbase/highways/ mapset=rbs there should name of the location in given gisdbase, i.e. `location=highways` Martin -- Martin Landa landa.martin gmail.com

Re: [GRASS-user] help(octave)

On Wed, Nov 18, 2009 at 6:55 PM, ricardo rodriguez ricardorodo...@gmail.com wrote: hello if anyone already worked or created scripts in octave and grass together, and I need some help on the subject. I have started a new page in the Wiki: http://grass.osgeo.org/wiki/GRASS_and_Octave ...please

Re: [GRASS-user] v.proj Not Working As Expected

On Wed, 18 Nov 2009, Martin Landa wrote: there should name of the location in given gisdbase, i.e. `location=highways` Martin, Thank you. The command v.proj in=highways location=highways mapset=rbs worked just fine. Rich ___ grass-user mailing

[GRASS-user] time dependent variable

Hello. I have a netcdf file that I'm visualizing in GRASS. I first convert the parameters to GeoTiffs (using gdal_translate) and then incorporate into GRASS via r.in.gdal. Each file has 48 time steps (one per hour for 2 days). Is there any way to show the progression of my data in GRASS? I

[GRASS-user] how to find peaks

Beyond r.param.scale, is there a good method anyone knows of to find peaks or hilltops? I'm more interested in the tops of hills/high points than the single cell that is the highest. Thanks Michael C. Michael Barton Director, Center for Social Dynamics Complexity

FW: [GRASS-user] DXF to UTM32

If your dxf is in a local coordinate system (like old topo drawings) with shifting parameters you can use v.transform or you can put it in place with a CAD software (align) and them import into GRASS. If it already have an utm coordinate and you want to change the reference system (datum)

Re: [GRASS-user] how to find peaks

On Wednesday 18 November 2009, Michael Barton wrote: Beyond r.param.scale, is there a good method anyone knows of to find peaks or hilltops? I'm more interested in the tops of hills/high points than the single cell that is the highest. Thanks Michael Hi, The r.param.scale uses some common

RE: [GRASS-user] 25 yr celebration

25 year is a long time. I have been working with GRASS for 5 years and I still haven't found nothing you can't do with GRASS. Thank you very much for the developers and users who help. Pablo Torres Carreira Brazil Making a LOT of thematic maps for ambiental purposes. Date: Wed, 18 Nov

Re: [GRASS-user] how to find peaks

On Wed, Nov 18, 2009 at 10:22 PM, Michael Barton michael.bar...@asu.edu wrote: Beyond r.param.scale, is there a good method anyone knows of to find peaks or hilltops? I'm more interested in the tops of hills/high points than the single cell that is the highest. Perhaps r.prominence:

Re: [GRASS-user] how to find peaks

Some friends and I had a similar problem once. We had to find hilltops because, according to brazilian environmental legislation, they are environmental preserves. (Top 1/3 of the mountain / hill has to be preserved) The way it was done to solve this was to define watersheds on an __inverted__

[GRASS-user] Strategy For DBMS Use

I've read the docs for DBMS use with vector themes/layers and am left with more questions than answers. Because my projects will involve only me I'll use SQLite. 1) My initial impression is that I need a separate database for each layer (i.e., one for highways, a separate one for streams

Re: [GRASS-user] how to find peaks

Very clever! Thanks much! Michael C. Michael Barton Director, Center for Social Dynamics Complexity Professor of Anthropology, School of Human Evolution Social Change Arizona State University Phone: 480-965-6262 Fax: 480-965-7671 www: www.public.asu.edu/~cmbarton,

RE: [GRASS-user] Strategy For DBMS Use

I have very nice results with sqlite+GRASS. First, use an sqlite administrator software to make things easier. 1) My initial impression is that I need a separate database for each layer (i.e., one for highways, a separate one for streams rivers, etc.). Is this correct? One database

RE: [GRASS-user] Strategy For DBMS Use

On Wed, 18 Nov 2009, Pablo Carreira wrote: I have very nice results with sqlite+GRASS. Pablo, I've been using SQLite for several years; it's the back end to my approximate reasoning model for environmental impact assessments. First, use an sqlite administrator software to make things

Re: [GRASS-user] how to find peaks

Well, it's not as straight forward as that. The preservation areas are more for land cover changes and such. There is a specific part in the legislation which states that activities with no locational alternatives like mining, can occur in hill tops. There is also a part about watershed divides

RE: [GRASS-user] Strategy For DBMS Use

Very interesting Rich, I have looked at you site. Nice to meet you. Pablo. I've been using SQLite for several years; it's the back end to my approximate reasoning model for environmental impact assessments. And I'm a stream ecologist/fluvial geomorphologist so I'm sure I'll have

Re: [GRASS-user] % of cover class upstream

Hi guys, sorry for my delay. I am trying your suggestions. cheers milton 2009/11/14 Rich Shepard rshep...@appl-ecosys.com On Sat, 14 Nov 2009, Milton Cezar Ribeiro wrote: I have a DEM, a drainage and a Cover mapa, and I need to estimate - for ANY pixel of my drainage - what is the amount

[GRASS-user] LRS Question

I've used v.lrs.create to take a line and point layer and produce a LRS map and segment table. However, it appears as the map has a single feature for each route. What I would like is to extract the segment geometry for each segment in the segment table (rstable=). Is this possible? I am new

Re: [GRASS-user] how to find peaks

Thanks or all the suggestions. We will be trying these out. In the meantime, I had a few minutes this evening and was messing around with r.param.scale. I discovered that the minic option does a pretty good job of identifying peaks too (minimum curvature perpendicular to direction of

Re: [GRASS-user] matlab scripts r.dominant_dir.m and r.calc_terraflow_dir.m

Mark: So, in short, I'm good to go. good. fwiw I added a couple USAGE lines to the header comments in those scripts. In matlab parlance a ! at the start of the line is similar to doing system(). Hamish ___ grass-user mailing list

Re: [GRASS-user] time dependent variable

Carbonari, Katie (IS) wrote: Hello. I have a netcdf file that I'm visualizing in GRASS. I first convert the parameters to GeoTiffs (using gdal_translate) and then incorporate into GRASS via r.in.gdal. Each file has 48 time steps (one per hour for 2 days). Is there any way to show the

Re: [GRASS-user] Watershed Area above a certain point

M S wrote: r.water.outlet works well for that. Try r.stream.basins to get basins for all your points of interest at once. Markus M Mark On Wed, Nov 18, 2009 at 3:41 PM, stephen sefick ssef...@gmail.com wrote: I have sampling locations that are located along streams. I would like to