[GRASS-user] Problems with i.pr (II)
Hello to all, I've just install the i.pr, but there is several problems with it, mainly with the i.pr.training module. 1) There is no manual, so I can only guess I each input parameter really is. I've send a mail asking for information about i.pr, but aparently is scarce. 2) When I try to use the interactive mode, it does nothing, it just stand still. More details about it, I do: i.pr.training map=lis...@portugal_9,lis...@portugal_9,lis...@portugal_9, lis...@portugal_9 vis_map=lis...@portugal_9 training=out4 rows=3 cols=3 class=1 And I get: PNG: GRASS_TRUECOLOR status: TRUE PNG: collecting to file: map.png, GRASS_WIDTH=768, GRASS_HEIGHT=501 The process never ends and I have to abort it. 3) when I use the vector mode (I did try it with vectors containing just points, just areas and just boundaries, and the problem is the same), I do: i.pr.training map=lis...@portugal_9,lis...@portugal_9, lis...@portugal_9,lis...@portugal_9 vis_map=lis...@portugal_9 training=out5 vector=pipr2 rows=3 cols=3 class=1 And I get: Option class ignored Labels will be directlly read from site file PNG: GRASS_TRUECOLOR status: TRUE PNG: collecting to file: map.png, GRASS_WIDTH=768, GRASS_HEIGHT=501 Dev note: Adapted sites library used for vector points. (module should be updated to GRASS 6 vector library) ERROR: Raster map out5_lis...@portugal_9.1 is not in the current mapset (Portugal_9) But, there is no out5_lis...@portugal_9.1, I dont know here this came from. The output is a file (in this case out5) with this: Data type: GrassTraining Number of layers: 4 Label: out5 Data: Layer_1Layer_2Layer_3Layer_4ClassEastNorth RowsColsEW-resNS-res And nothing else. So, what happening here? Can anyone tell me? Thank you JD ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Installing snapshot on a defined Folder
Greetings from my Package manager (Synaptic in Ubuntu) I have installed GRASS-dev package in /usr/lib/grass64/. But, then I decided to install a Weekly snapshot to update a few issues. But the weekly snapshot was installed in /usr/local/grass-6.4.0svn. My question is, how can I define my installation destination directory to avoid having 2 different installations? Thank you Kim ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Installing snapshot on a defined Folder
On Tue, Apr 13, 2010 at 11:07 AM, Kim Besson kimbesson1...@gmail.com wrote: Greetings from my Package manager (Synaptic in Ubuntu) I have installed GRASS-dev package in /usr/lib/grass64/. But, then I decided to install a Weekly snapshot to update a few issues. But the weekly snapshot was installed in /usr/local/grass-6.4.0svn. That's the default. My question is, how can I define my installation destination directory to avoid having 2 different installations? Please enjoy the help :) sh grass-6.4.0svn-i686-pc-linux-gnu-10_04_2010-install.sh --help Usage: grass-6.4.0svn-i686-pc-linux-gnu-10_04_2010-install.sh grass-6.4.0svn-i686-pc-linux-gnu-10_04_2010.tar.gz [dest_dir] [bin_dir] ... Good luck, Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] v.net.iso - service area
Hi Markus, I 'll write a FAQ when I get correct results from the process of network service area. David's approach of using v.net.salesman on a delauany-graph worked for a few special geometries. But I think the results are not really good for many cases. I' ve got an idea about another solution but it's not fully tested yet. The problem of automatically finding the endpoints as Richard mentioned it will also be part of the research. More on this when I have more time to work on this. regards, Johannes Markus Neteler schrieb: Hi, would you mind to write a smal FAQ for us? http://grass.osgeo.org/wiki/Faq Thanks Markus On Fri, Apr 9, 2010 at 2:51 PM, Johannes Sommer johann.onl...@gmx.de wrote: David, thank you very much! I tested your approach with network isolines derived from a dataset with one center - and it worked very well! The automated approach will be interesting (also with more than one center) - but therefore I need more experience in GRASS scripting. thanks, Johannes David Mahoney schrieb: I went through this last year, and as I remember, v.hull doesn't quite get you there, since the resultant polygon can't dip in to reach concave sections of a service area. I used v.delaunay to create a network of the nodes that made up the connections between service areas, and v.net.salesman to generate the edges of the service areas. David On Mon, 2010-04-05 at 09:04 -0300, Daniel Victoria wrote: If I understand you correctly, v.hull might help to create the service area polygon from the points http://grass.itc.it/grass62/manuals/html62_user/v.hull.html On Sun, Apr 4, 2010 at 8:12 PM, Richard Chirgwin rchirg...@ozemail.com.au wrote: -- Message: 3 Date: Sat, 03 Apr 2010 23:11:26 +0200 From: Johannes Sommer johann.onl...@gmx.de Subject: [GRASS-user] v.net.iso - service area To: grass-user@lists.osgeo.org Message-ID: 20100403211126.313...@gmx.net Content-Type: text/plain; charset=iso-8859-1 Hi list, recently I played around with the network functionality in ArcGIS. I generated so called Service Areas in a network dataset which return the regions that can be accessed in a network dataset based on several distances (in my example 150, 400 meters). I wanted to reproduce the results with GRASS GIS and after a short search I found the module v.net.iso which seemed to fit my needs. It returns exactly the same results as ArcGIS did on isolines on a network, but I can't find any solution concerning the service areas. Can anyone point me in the right direction to calculate zones (that is build polygons from the end points of each network segment) from these generated isolines in a network? Regards, Johannes Johannes, I don't think there's anything to do this automatically in Grass-GIS. But I think you should be able to construct a script that would connect pairs of points. So if you can extract each end point of the network segment, you would end up with a vector containing only points - then create a temporary map of a point pair, run (say) v.distance output=connectors on each point pair, patch the resulting maps together ... It sounds a bit labourious, and probably someone else can think of something easier, but if you get all the individual steps right, a script is then easy to create. (Actually, Johannes, I think the idea is brilliant. I've done lots of network service area work, and it never occurred to me before!) Richard Chirgwin ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Questions about r.mfilter
Does anyone know if the r.mfilter will support negative values in the matrix filter file. I was hoping to do a high pass filter on a dataset, so I created a filter for input in the following format, but it will not work. TITLE HighPass3x3 MATRIX3 -1 -1 -1 -1 8 -1 -1 -1 -1 DIVISOR 9 TYPES Input command is: r.mfilter input=mag_1...@laindia output=HighPass3x3_Mag12.5 filter=/home/cvandenberg/Documents/Filters/HighPass3x3.txt* **ERROR: Filter file format error* When I run a low pass filter (for example an N x N filter with all '1' the filter file is recognized. Any hints on how I can go about running a high pass filter using GRASS? Thanks, Casey ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Installing snapshot on a defined Folder
Kim, (please keep the discussion on the list) On Tue, Apr 13, 2010 at 6:46 PM, Kim Besson kimbesson1...@gmail.com wrote: Markus I'm not I have understand you I using following configuration: ./configure --with-wxwidgets --with-blas --with-lapack --with-nls --with-cxx ... to compile and install in a different location than /usr/local/, use --prefix= for configure. For example, ./configure --prefix=/nfsmnt/GRASS-GRID/binaries ... Hope this helps, Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
