[GRASS-user] removing small lines
Hi all, I've seen that the remove_small method of v.generalize has been eliminated. Reduction method does not work in the way I want since it just removes point from lines and it seems like has no effect on a line of 2 points - even if they're smaller than the threshold. Can someone tell me what the workaround is for removing small lines from a vector for example by a threshold in map units? Cheers, Levente ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] libintl8.dll not found
hi, it's possible that uninstalling and reinstalling GRASS into a directory without whitespaces (e.g.: C:\GRASS) will solve this issue. cheers, Levente 2013/10/16 FNK pablo.fnk.fon...@gmail.com Hello, I need to instal the 6.4.2 version of Grass in my Windows 7. I've done it from the bin downloaded here (http://grass.osgeo.org/grass64/binary/mswindows/native/) because downloading the OSGEO4W installer, it installs at least 6.4.3 version. I install it without problem and I launch the interface too, however, I've added to the local variables the next entries because I want to use GRASS commands from the windows console: Path= C:\Program Files (x86)\GRASS 6.4.2\bin;C:\Program Files (x86)\GRASS 6.4.2\scripts;C:\Program Files (x86)\GRASS 6.4.2\lib;C:\Program Files (x86)\GRASS 6.4.2\extralib; GISBASE=C:\Program Files (x86)\GRASS 6.4.2; GISRC= /* My grassrc6 file */ However when I try, for example, to launch a g.list from the console, it says that libintl8.dll is not found. The web page of winGRASS give a solution: http://grasswiki.osgeo.org/wiki/WinGRASS_errors#Error_message_.22This_application_has_failed_to_start_because_libintl3.dll_was_not_found.22._.28or_libiconv2.dll_and.2For_regex2.dll.29 But I don't know how to do it. How can I reinstall msys from winGRASS binary? Regards. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/libintl8-dll-not-found-tp5083833.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 ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] converting LAT/LON coordinates to X/Y coordinates
hi, if you're working with shapefiles (that you mentioned in your first mail) the best solution for you is using a map reprojection. you can follow the following steps that you can see in the wiki: [1] [1] http://grasswiki.osgeo.org/wiki/Map_Reprojection (you'd need v.proj) regards, Levente 2013/10/14 Nikos Alexandris n...@nikosalexandris.net Micha Silver wrote: For jobs like this you can use the cs2cs tool (part of the proj4 package) to convert coordinate pairs from one CRS to another. You can see some examples on the wiki page [1] (Note: The coordinates below do not look like Lon/Lat) [1] http://trac.osgeo.org/proj/wiki/man_cs2cs GRASS GIS' m.proj is also fit for the task I think. It is charachterised as a cs2cs frontend: http://grass.osgeo.org/grass64/manuals/m.proj.html. Nikos [rest deleted] ___ 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
Re: [GRASS-user] dbase driver in grass7
Thanks for the replies. db.connect would do what I want, but I think my issue is a bit more tricky. Actually, I use GRASS7 as a backend for some WPS processes, and as it seems to me: every WPS process creates a temporary workspace. I may be able to run v.db.connect via WPS, but it would have effect on a vector map (which is also temporary), so it has nothing to do with the next process I want to execute. The reason I wish to use dbf driver instead of SQLite is the following: There's a package called Geo-MHYDAS, which had a module m.definput [1]. This module gives the error message: ERROR: Sorry, but only dbf driver accepted. So that is why I want to find an universal solution. Any thoughts? Cheers, Levente [1]: http://www.openfluid-project.org/resources/docs/mhydas/en/segmentation/html/m.definput.html 2013/7/3 Hamish hamis...@yahoo.com MarkusM: Note that the dbf/ subdirectory in the mapset must exist or must be created by the user. I think that usually it gets created as needed automatically. There may still be a few places it doesn't, if so file a ticket to fix.. (did a long audit for that in grass6 some time ago, tested in grass7 last week it was automatically created as needed.) Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] dbase driver in grass7
I was wondering about re-compiling GRASS7. I don't know if it is possible to compile it with the dbf connection as default. I think that would solve my problem. What do you think? Does it make any sense? If so, can you point to a direction where I can start doing this? Cheers, Levente 2013/7/4 Markus Metz markus.metz.gisw...@gmail.com On Thu, Jul 4, 2013 at 8:07 AM, Levente Juhász jlevent...@gmail.com wrote: Thanks for the replies. db.connect would do what I want, but I think my issue is a bit more tricky. Actually, I use GRASS7 as a backend for some WPS processes, and as it seems to me: every WPS process creates a temporary workspace. I may be able to run v.db.connect via WPS, but it would have effect on a vector map (which is also temporary), so it has nothing to do with the next process I want to execute. The reason I wish to use dbf driver instead of SQLite is the following: There's a package called Geo-MHYDAS, which had a module m.definput [1]. This module gives the error message: ERROR: Sorry, but only dbf driver accepted. So that is why I want to find an universal solution. Any thoughts? Yes: db.connect driver=dbf database='$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/' which sets the default database connection to dbf. Note the difference between db.connect and v.db.connect. In your case, you would need to run db.connect immediately after the mapset is created, before any vector data are imported in the temporary mapset. HTH, Markus M Cheers, Levente [1]: http://www.openfluid-project.org/resources/docs/mhydas/en/segmentation/html/m.definput.html 2013/7/3 Hamish hamis...@yahoo.com MarkusM: Note that the dbf/ subdirectory in the mapset must exist or must be created by the user. I think that usually it gets created as needed automatically. There may still be a few places it doesn't, if so file a ticket to fix.. (did a long audit for that in grass6 some time ago, tested in grass7 last week it was automatically created as needed.) Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] dbase driver in grass7
Hi list, is it possible to use the old dbf driver instead of the new default sqlite driver in GRASS7? Thanks, Levente ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] r.sim.water (compiling) issue
Thanks guys for the tips. I've got to change my system back to ubuntu 12.04 so I'm not able to post the outputs you asked for. I downloaded the latest source code from svn.osgeo.org and compiled it. Now r.sim.water works as expected. Yesterday I was trying to make it work for a while and I found this out: when other processes used lots of memory (10+ chrome tabs, mozilla, etc), the libgrass_sim.7.0.svn.so: cannot map zero-fill pages: Cannot allocate memory error came out while i was trying to call r.sim.water. After closing most of the processes, r.sim.water could open. I'm not really an expert, but it seems like it has something to do with memory handling... Thanks again for trying to help, everything works well now. 2013/3/28 Markus Neteler nete...@osgeo.org On Wed, Mar 27, 2013 at 9:31 AM, Levente Juhász jlevent...@gmail.com wrote: Hi list, I am Levente from Hungary and i want to use GRASS GIS for a project. I'm working on a website that can do a hydrological modeling task via WPS protocol. I started to develop it in a windows environment but the module i want to use (r.sim.water) had some issues on WinGrass. I've recently changed my system to ubuntu 12.10. Altough I'm not dealing with linux and GRASS GIS for a long time I understands the basics of them. I have downloaded and compiled a GRASS70 svn from ubuntugis Please, as Rashad suggests, get source code from the GRASS Server itself: http://trac.osgeo.org/grass/wiki/DownloadSource#GRASS7 GRASS GIS compilation log - Started compilation: 2013. márc. 27., szerda, 01.00.29 CET -- Errors in: /home/pepszi/grass70.7.0.orig/raster/simwe/r.sim.water /home/pepszi/grass70.7.0.orig/raster/simwe/r.sim.sediment -- In case of errors please change into the directory with error and run 'make'. Please try as suggested: cd /home/pepszi/grass70.7.0.orig/raster/simwe/r.sim.water make and cd /home/pepszi/grass70.7.0.orig/raster/simwe/r.sim.sediment make to see the errors. ... Unable to fetch interface description for command 'r.sim.water'. Details: r.sim.water: error while loading shared libraries: libgrass_sim.7.0.svn.so: cannot map zero-fill pages: Cannot allocate memory Please post the result of g.region -p ... p.s.: I checked the stable Grass 6.4.2. which comes from the ubuntu software center and it produces similar issues. Is it an issue which has something to do with my system? What should I do? Please also post uname -a Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Fill area between isolines?
Hi Timmie, I do not know what your data could look like, but plese see my thoughts inline: 2013/3/29 Tim Michelsen timmichel...@gmx-topmail.de Hello user list, I have a question filling the area between isolines by the values of the isolines (without interpolation): I have a vector with isolines of which the values define certain properties of the area (e.g. cost factor). If your isolines are not disjointed I would suggest to make areas from them (v.type + v.centroids). How can I create an area that fills the area between these lines and to which the same value as the last adjacent line is attached (all points from one line to the other have the same cost factor)? I understand that in this case a interpolation is not required. Once you have the areas, you should rasterize (v.to.rast) each of them for example with the parameter use=val. It will give a raster output with the cell values 1 if the the cells were in the specific area that you rasterized. If you do this for all of your iso-areas you'll have a raster layer for each of areas that are enclosed by an isoline. After all I would use r.mapcalc and summarize all of your created layers. The cells with the highest value will be equal of the area that had the highes value, and you can guess all other categories... I don't know wether it works with your data or not. That was just my first thouth when I've read your question. Levente It would be great to receive some helpful hints and tips on above outlined question. Kind regards and thanks in advance, Timmie ___ 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] r.sim.water (compiling) issue
Hi list,
I am Levente from Hungary and i want to use GRASS GIS for a project. I'm
working on a website that can do a hydrological modeling task via WPS
protocol. I started to develop it in a windows environment but the module i
want to use (r.sim.water) had some issues on WinGrass. I've recently
changed my system to ubuntu 12.10. Altough I'm not dealing with linux and
GRASS GIS for a long time I understands the basics of them.
I have downloaded and compiled a GRASS70 svn from ubuntugis (this exactly:
https://launchpad.net/~ubuntugis/+archive/ubuntugis-testing/+sourcepub/3015769/+listing-archive-extra).
After compiling I can see an error log like this:
GRASS GIS compilation log
-
Started compilation: 2013. márc. 27., szerda, 01.00.29 CET
--
Errors in:
/home/pepszi/grass70.7.0.orig/raster/simwe/r.sim.water
/home/pepszi/grass70.7.0.orig/raster/simwe/r.sim.sediment
--
In case of errors please change into the directory with error and run
'make'.
If you get multiple errors, you need to deal with them in the order they
appear in the error log. If you get an error building a library, you will
also get errors from anything which uses the library.
--
Finished compilation: 2013. márc. 27., szerda, 01.13.11 CET
I can start grass70 but when i try to open the r.sim.water dialog i get the
following error (something similar comes up if i try to use the command
line)
Traceback (most recent call last):
File /usr/local/grass-7.0.svn/etc/gui/wxpython/gui_core/p
rompt.py, line 271, in OnItemSelected
self.cmdDesc = gtask.parse_interface(GetRealCmd(cmd))
File
/usr/local/grass-7.0.svn/etc/python/grass/script/task.py,
line 484, in parse_interface
tree = etree.fromstring(get_interface_description(name))
File
/usr/local/grass-7.0.svn/etc/python/grass/script/task.py,
line 461, in get_interface_description
\n\nDetails: %(det)s) % { 'cmd' : cmd, 'det' :
decode(cmderr) }
grass.script.core
.
ScriptError
:
Unable to fetch interface description for command
'r.sim.water'.
Details: r.sim.water: error while loading shared libraries:
libgrass_sim.7.0.svn.so: cannot map zero-fill pages: Cannot
allocate memory
I'm a little bit confused and i don't know what causes this error. I know
that this is an experimental version of GRASS but I still hope that somehow
it can be worked out. Would it be a solution if somehow I compile a working
version of r.sim.water source? If so, where can I find it and how can I
make it work? I also thought about changing to another grass70 svn
(preferably to such a version where r.sim.water works :) ). Anyone has
experiances with one of the grass70svns and r.sim.water? I would be very
thankful if someone can suggest me a working one.
p.s.: I checked the stable Grass 6.4.2. which comes from the ubuntu
software center and it produces similar issues. Is it an issue which has
something to do with my system? What should I do?
Any help would be appreciated
Thanks in advance:
Levente Juhasz
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