[GRASS-user] error with r.terraflow
Hello, I am a newbie, using the windows version (6.4.0RC6) and i keep getting the following error message with when running r.terraflow, i tried running from command line with the sample data and using the GUI but no success. Like i said i am a new user so its rather difficult identifying the source of the problem. Any help would be appreciated. Error: Assertion failed: nrows * ncols == str-stream_len(), file grass2str.h,line 144 This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. Thanks, -- Mansoor Delali Leh , Graduate Assistant Department of Biological Agricultural Engineering 309 Engineering Hall University of Arkansas Fayetteville, AR 72701 *** ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Re: [GRASS-dev] Helpp needed to call Grass from inside Python Plugin
Dear All, Thank you very much for all your inputs and you guys have done a wonderful work. I am able to solve my problem. Three Cheers for Grass and Open Source Softwares. Thanks you all once again. With Regards, Bishwarup On Thu, Mar 25, 2010 at 7:50 AM, Glynn Clements gl...@gclements.plus.comwrote: Bishwarup Banerjee wrote: I have tried to iimplement the example in my way. The code is as follows import core as grass This should be: import grass.script as grass or: import grass.script.core as grass def main(): input_map = options['H:/Shared_data/test1.tif'] output_map = options['Test_24'] This is bogus. The keys in the options dictionary are the names of the options defined in the g.parser comments (assuming that you have them; if you don't, grass.parser() won't work). But I get the following error, I cant make out where I am going wrong. I have set all the Env variables as suggested in the wiki page. Please help me to implement it. F:\GRASS-6-SVN\etc\python\grass\scriptpython test.py Traceback (most recent call last): File test.py, line 18, in module options, flags = grass.parser() File F:\GRASS-6-SVN\etc\python\grass\script\core.py, line 359, in parser os.execvp(g.parser.exe, [name] + argv) File F:\Quantum GIS\python\os.py, line 353, in execvp _execvpe(file, args) File F:\Quantum GIS\python\os.py, line 389, in _execvpe func(fullname, *argrest) OSError: [Errno 22] Invalid argument I have no idea what's causing this. I suggest modifying the parser() function to print the arguments which are being passed to os.execvp(): File F:\GRASS-6-SVN\etc\python\grass\script\core.py, line 359, in parser os.execvp(g.parser.exe, [name] + argv) -- Glynn Clements gl...@gclements.plus.com ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] translucency and svg output
pete davidson wrote: The only workaround I've managed to find so far is to export each layer as an individual svg, with v.out.svg? Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] translucency and svg output
Pete, sorry if I'm off board : do you absolutely need to generate a /vector/ output ? Vincent. Le mercredi 24 mars 2010 à 20:15 -0700, pete davidson a écrit : On Wed, Mar 24, 2010 at 7:49 PM, pete davidson caiti...@gmail.com wrote: On Wed, Mar 24, 2010 at 7:42 PM, Glynn Clements gl...@gclements.plus.com wrote: pete davidson wrote: I'm producing maps in svg format using the cairo driver and d.out.file. One thing I'd really like to be able to do is set one or more of the vector layers to be partially translucent. After rummaging through this list, I'm beginning to wonder if its possible at all, since translucency in the guis seems to be handled by g.pnmcomp, but perhaps someone with more experience knows a way to do it. It isn't. The graphics API doesn't support an alpha component. Apart from anything else, it can't easily be implemented for PostScript output, as PostScript doesn't support translucency. Faking it with patterns is possible, but it starts getting complicated if you want more than one translucent layer. The only workaround I've managed to find so far is to export each layer as an individual svg, then use something like inkscape to rejoin them, setting the translucency/transparency of each layer as I do it. Which is fine for a map with only a few layers, but gets tedious when dealing with maps with dozens of layers. SVG is XML, so it shouldn't be especially hard to automate the process using generic XML-processing tools. Ohh, I hadn't thought of editing the svg/xml directly. Thanks for the suggestion, I'll see what I can achieve from there. And then we discover that the 'svg' produced by cairo using the above script is actually just a png in an svg wrapper.. At least for my particular install of Grass. That's frustrating. Ahh well, back to the drawing board. Peter ___ 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] Re: v.net.path algorithm problem
Hi, Thanks for your suggestions. Perhaps some nodes are missing? I have success in the past by applying http://grass.osgeo.org/grass64/manuals/html64_user/v.net.html I tried v.net -- report and indeed some nodes where missing. I added those with v.net --nodes. Running v.net.path can still not found pathes for the same combinations. Matthias - if you zoom very closely to any of the categories in the error report, do you see a lack of connection between those points and the network lines? I couldn't find any gap in the network. The connection lines were generated by v.net -- connect -- View this message in context: http://n2.nabble.com/v-net-path-algorithm-problem-tp4789540p4796272.html Sent from the Grass - Users mailing list archive at Nabble.com. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] error with r.terraflow
Hi, Error: Assertion failed: nrows * ncols == str-stream_len(), file grass2str.h,line 144 This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. about the error: I dont know, but: can you give some more information about the data you are using? And: can you post the commands you are used? (You can find the command line equivalent for the gui in the tab Command Output) Regards, Achim ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Re: v.net.path algorithm problem
Your data set seems to be small. If You really think it's a bug in v.net.path, open a ticket in Trac and attach sample data set with commands to run. Then others developers will be able to check Your data set and to confirm or (most likely) deny bug existence in v.net.path. Of-course You can g.copy that vector to another mapset and then zip it and place on some server and then simply drop a link here. Without seeing sample data it's impossible to tell if it's a v.net problem, as when I was using v.net.path half a month a go it was working just fine. WBR, Maris. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] error with r.terraflow
Next time don't forget to state Your Windows version, as some issues are version-specific. Still this is a known issue: http://trac.osgeo.org/grass/ticket/1006 Maris. 2010/3/25, Mansoor Leh mdk...@gmail.com: Hello, I am a newbie, using the windows version (6.4.0RC6) and i keep getting the following error message with when running r.terraflow, i tried running from command line with the sample data and using the GUI but no success. Like i said i am a new user so its rather difficult identifying the source of the problem. Any help would be appreciated. Error: Assertion failed: nrows * ncols == str-stream_len(), file grass2str.h,line 144 This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. Thanks, -- Mansoor Delali Leh , Graduate Assistant Department of Biological Agricultural Engineering 309 Engineering Hall University of Arkansas Fayetteville, AR 72701 *** ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] v.net.path algorithm problem
Hamish wrote: Richard wrote: if you zoom very closely to any of the categories in the error report, do you see a lack of connection between those points and the network lines? 'v.clean tool=snap' is for lines, but it's pretty close. is there a tool to snap points to lines? Hamish Not that I know of, but there are some possible workarounds. 1. v.net, as Markus said, is designed to make the connections. I find it can produce some odd results, but that could well be user inexperience! 2. If you can't beat a problem any other way, use v.distance with the output flag set. This will create lines connecting source to destination. Gee, I should have thought of *that* sooner for a problem I was working on a couple of weeks back! Richard ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] grass 7 and ubuntu start up
Hello, Just installed grass 7.0 using the latest snapshot binary march 20 (grass7.0.svn-i686-pc-linux-gnu-20_03_2010) and ubuntu 9.10. I type in grass70 in the shell and nothing happens. No error but also no gui. I try some gui commands and it says command not found. Nothing really works but the program seems to activate. I use grass 6.4 often but am at a loss as to what the problem is. Thanks, Matthew grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user _ The New Busy is not the old busy. Search, chat and e-mail from your inbox. http://www.windowslive.com/campaign/thenewbusy?ocid=PID27925::T:WLMTAGL:ON:WL:en-US:WM_HMP:032010_3___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
RE: [GRASS-user] problems with GRASS 6.4
Hello list;I have just installed the new Grass version but I haven't been able to work with it! If I try to launch the GRASS 6.4 ORC6 with the new wxpython GUI; I get an error message saying that python.exe has detected a problem and has to close. Any idea of what the problem could be? Miguel, I had the same problem with osgeo4w. Then I installed the RC6 with the installer (http://grass.osgeo.org/grass64/binary/mswindows/native/), after that both distributions worked very well. I have no idea what it is, but it worked. BTW, RC6 is very stable. Pablo. _ Navegue sem medo: O Internet Explorer 8 te deixa mais protegido. Baixe gratuitamente. http://go.microsoft.com/?linkid=9707132___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] grass 7 and ubuntu start up
Hi Matthew, just an idea : did you check if grass70 exists in your path and if so, is it executable (you can type sth like ls -l /usr/bin/grass* in a term) Yours, Vincent. Le jeudi 25 mars 2010 à 12:24 +, Matthew Mulbrandon a écrit : Hello, Just installed grass 7.0 using the latest snapshot binary march 20 (grass7.0.svn-i686-pc-linux-gnu-20_03_2010) and ubuntu 9.10. I type in grass70 in the shell and nothing happens. No error but also no gui. I try some gui commands and it says command not found. Nothing really works but the program seems to activate. I use grass 6.4 often but am at a loss as to what the problem is. Thanks, Matthew grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user __ The New Busy is not the old busy. Search, chat and e-mail from your inbox. Get started. ___ 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] Flat area issue in r.watershed
Hi List! I often use the tool r.watershed and I always wonder that it seems to be not affected by the issue of flat areas . How it manages the surface flows in low/zero slope areas? Thank you in advance. Cheers -- Eng. Margherita Di Leo Ph.D. Candidate Methods and Technologies for Environmental Monitoring Department of Environmental Engineering and Physics (DIFA) University of Basilicata Campus Macchia Romana 85100 - Potenza Italy Office: +39-0971205363 Fax: +39-0971205160 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Can't install i.pr
Hello fellow GRASS users, I'm new with GRASS. At this point, I need to install the i.pr add-on, but I've met some dificulties: I download the package via svn, and that went just fine. But when I do make MODULE_TOPDIR=/usr/lib/grass64 I get this a huge stream of errors and warnings, e.g. ... main.c:294: warning: assignment makes pointer from integer without a cast main.c:295: error: dereferencing pointer to incomplete type main.c:296: error: dereferencing pointer to incomplete type main.c:297: error: dereferencing pointer to incomplete type main.c:298: error: dereferencing pointer to incomplete type main.c:299: error: dereferencing pointer to incomplete type main.c:300: error: dereferencing pointer to incomplete type main.c:302: warning: assignment makes pointer from integer without a cast main.c:303: error: dereferencing pointer to incomplete type main.c:304: error: dereferencing pointer to incomplete type main.c:305: error: dereferencing pointer to incomplete type main.c:306: error: dereferencing pointer to incomplete type main.c:307: error: dereferencing pointer to incomplete type main.c:310: warning: implicit declaration of function ‘G_define_flag’ ... Can anyone tell me why this is so, and how can I solve this? Thanks. (PS: I'm working in Ubuntu 9.10 with GRASS 6.4.) ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Image segmentation á-la eCognition
Hello fellow GRASS users, Can anyone tell if is possible to do image segmentation, like eCognition or SPRING, in GRASS. I did some reasearch, but I couldn't find anything about it. Thank you ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Can't install i.pr
On Thu, Mar 25, 2010 at 4:37 PM, joel dinis dinis.j...@gmail.com wrote: Hello fellow GRASS users, I'm new with GRASS. At this point, I need to install the i.pr add-on, but I've met some dificulties: I download the package via svn, and that went just fine. But when I do make MODULE_TOPDIR=/usr/lib/grass64 I get this a huge stream of errors and warnings, e.g. ... main.c:294: warning: assignment makes pointer from integer without a cast main.c:295: error: dereferencing pointer to incomplete type main.c:296: error: dereferencing pointer to incomplete type main.c:297: error: dereferencing pointer to incomplete type main.c:298: error: dereferencing pointer to incomplete type main.c:299: error: dereferencing pointer to incomplete type main.c:300: error: dereferencing pointer to incomplete type main.c:302: warning: assignment makes pointer from integer without a cast main.c:303: error: dereferencing pointer to incomplete type main.c:304: error: dereferencing pointer to incomplete type main.c:305: error: dereferencing pointer to incomplete type main.c:306: error: dereferencing pointer to incomplete type main.c:307: error: dereferencing pointer to incomplete type main.c:310: warning: implicit declaration of function ‘G_define_flag’ ... to which of the i.pr commands is this related? For me it compiles fine (Mandriva, GRASS 64). (PS: I'm working in Ubuntu 9.10 with GRASS 6.4.) Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Flat area issue in r.watershed
On Thu, Mar 25, 2010 at 2:45 PM, Margherita Di Leo direg...@gmail.com wrote: Hi List! I often use the tool r.watershed and I always wonder that it seems to be not affected by the issue of flat areas . How it manages the surface flows in low/zero slope areas? AFAIK it uses a least-cost algorithm (A^T search) to figure out the *best* way. The man page contains a reference to Chuck Ehlschlaeger's document about this method. Ah, I see that the link is now http://chuck.ehlschlaeger.info/older/IGIS/paper.html will update the manual page. Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] translucency and svg output
Thanks to all for these suggestions and comments. I will look at the options suggested by Andreas, and follow Glynn's comment to explore why Cairo dropped to rasterization - it's good to know that *that's* why I got raster output, rather than wrapping a raster being all that Cairo does! To answer Hamish, no, I was exporting each individual layer using d.vect and d.out.file. Your question gives me the idea I should try using v.out.svg for individual layers to help work out why Cairo dropped to raster output and/or to produce individual layers to stitch together later if necessary. Re Vincent's comment that holding vector format to 'the very end', unfortunately what I'm doing isn't for single-use - I'm producing maps that will be used by several end users for uses ranging from conference posters to individual papers, so I can't predict final image sizes in advance (and I'm not going to be the only end-user). Hence my desire to stick to a vector format in the hopes that they'll at least scale cleanly. Although if Vincent is willing to share an example script that uses imagemagik to compose ps layers I'd be delighted to see it. Thanks again to all for sharing your thoughts expertise. Peter ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Can't install i.pr
joel dinis wrote: I'm new with GRASS. At this point, I need to install the i.pr add-on, but I've met some dificulties: I download the package via svn, and that went just fine. But when I do make MODULE_TOPDIR=/usr/lib/grass64 I get this a huge stream of errors and warnings, e.g. ... main.c:310: warning: implicit declaration of function �G_define_flag� I suspect that the stream of errors starts with something like: foo.c:1:23: error: grass/gis.h: No such file or directory When faced with a large number of errors, always look at the first ones, as they usually indicate the actual problem, while later ones are merely symptoms of the problem. Also, always redirect make output to a file, e.g.: make build.log or: make 21 | tee build.log Can anyone tell me why this is so, and how can I solve this? It's probably because include/Make/Platform.make has GRASS_HOME (etc) pointing to the directory where GRASS was built. If you want to compile add-ons against an installed version of GRASS, you'll need to override more than just MODULE_TOPDIR. AFAICT, you may also need to override ARCH_DISTDIR and ERRORLOG and possibly ARCH_BINDIR and/or RUN_GISBASE. -- Glynn Clements gl...@gclements.plus.com ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
