Re: [GRASS-user] Random Forest Classifier
Le 26/10/11 10:30, Mohammed Rashad a écrit : Hi All, I am searching for an example of image classification using Random Forest classifier. I found R has a package for random forest classification. Anyone has done this classification using R and GRASS? please provide an example and tell me some sample data ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user Hi Mohammed I have find that this moring, may be it can be interesante for you. It's note an exemple for Grass R utilisation but... http://www.r-bloggers.com/mixed-effects-models-in-r-with-quantum-forest/?utm_source=feedburnerutm_medium=feedutm_campaign=Feed%3A+RBloggers+%28R+bloggers%29utm_content=Google+Reader -- Cordialement Etienne DELAY(IDSkype : etienne.delay.tic) PhD student on evolution of vineyard landscape laboratoire GEOLAB UMR 6042 CNRS Université de Limoges, FLSH 39E rue Camille Guérin 87036 Limoges CV en ligne : http://www.viadeo.com/invitation/etienne.delay ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] set up Grass 7 to run using eclipse or Ubuntu?
Hello, Just wondering if anyone has an example of how to set up python environment variables for grass 7 in Ubuntu. I am assuming it is different form Grass 6.5. I am particularity interested if people are running Grass 7 from eclipse. Thanks, Matthew ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] OSM import via gpsbabel fails
Hi, Trying to import the Australian Open Street Map file using v.in.garmin with format=osm, I get this error: gpsbabel(8336) malloc: *** mmap(size=2097152) failed (error code=12) .tmp/Richard.local/8320.0.xcsv: No such file or directory /v.in.gpsbabel: line 257: [: : integer expression expected *** error: can't allocate region *** set a breakpoint in malloc_error_break to debug gpsbabel: Unable to allocate 148 units of 1 bytes of memory. System: Mac OSX 10.5.8 Grass-GIS 6.4 The OSM file is here, but warning, it's large: http://www.osmaustralia.org/osmausextract.php Any suggestions? Richard ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] ps.map arrow head
Hi list, a bit of squeezed with ps.map : is there a simple way to draw arrowheads on top of vector lines in a map composition ? I did not find any option in vlines instruction. Did I miss it ? Perhaps should I extract tnodes (or fnodes) from the source lines vector, then print arrowheads as symbols with vpoints instruction. But I can't figure out how I can obtain the angle to rotate symbols the right way, ie finding the azimuth of the last (or first) segment of each line... If anyone experienced this, I would be glad to know how you proceeded. Thank you, Vincent ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Joining two polygons
v.dissolve ? http://grass.osgeo.org/gdp/html_grass64/v.dissolve.html Cheers Daniel On Mon, Oct 24, 2011 at 11:46 AM, Luisa Peña luisapena1...@gmail.com wrote: Greetings I have imported a Shapefile with a few polygons (areas) and I want to join two of them. These two have different Sq Meters, Hectares, Acres, Sq miles, same layer (Layer: 1); different category (5 and 7), same Driver, same database, same table, different cat, same key column, same Id, and other fields are different. How can I join them in a single area? Thanks Luisa ___ 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] create a new vector map and add attributes
How to create a new vector map by code and define its attribute table? ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] create a new vector map and add attributes
http://trac.osgeo.org/grass/browser/grass/trunk/vector/v.random/main.c 2011/10/27 Mohammed Rashad mohammedrasha...@gmail.com: How to create a new vector map by code and define its attribute table? ___ 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] create a new vector map and add attributes
Hi, 2011/10/27 Mohammed Rashad mohammedrasha...@gmail.com: How to create a new vector map by code and define its attribute table? v.edit map=new tool=create v.db.addtable map=new columns=cat int, label varchar(250) Martin PS: in GRASS 7 omit cat int, -- Martin Landa landa.martin gmail.com * http://geo.fsv.cvut.cz/~landa ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] create a new vector map and add attributes
2011/10/27 Martin Landa landa.mar...@gmail.com: Hi, 2011/10/27 Mohammed Rashad mohammedrasha...@gmail.com: How to create a new vector map by code and define its attribute table? v.edit map=new tool=create v.db.addtable map=new columns=cat int, label varchar(250) I see by code, so take a look at v.edit module (TOOL_CREATE). Martin -- Martin Landa landa.martin gmail.com * http://geo.fsv.cvut.cz/~landa ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] wxpyhton icon theme problem
Maybe is a silly question but, How could I change the icon theme on GRASS6.4.2RC1 from the terminal, or which document(s) should edit to do that? The problem is that once I compiled 6.4.2RC1 I've tried to change the icon theme and when I restarted the g.gui, an error appears and I cannot longer load the wxpython GUI, so I'm not able to access the Preferences menú :\ What's wrong? PS: GRASS 6.4.2RC1 compiled from sources on Ubuntu 10.10 Error message: Traceback (most recent call last): File /usr/local/grass-6.4.2RC1/etc/wxpython/wxgui.py, line 65, in module from gui_modules import layertree File /usr/local/grass-6.4.2RC1/etc/wxpython/gui_modules/layertree.py, line 44, in module import toolbars File /usr/local/grass-6.4.2RC1/etc/wxpython/gui_modules/toolbars.py, line 51, in module from icon import Icons File /usr/local/grass-6.4.2RC1/etc/wxpython/icons/icon.py, line 433, in module 'scriptSave' : MetaIcon(img = iconSet['script-save'], KeyError: 'script-save' ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] wxpyhton icon theme problem
Hi, 2011/10/27 Lluís Vicens ll...@sigte.udg.es: How could I change the icon theme on GRASS6.4.2RC1 from the terminal, or which document(s) should edit to do that? The problem is that once I compiled 6.4.2RC1 I've tried to change the icon theme and when I restarted the g.gui, an error appears and I cannot longer load the wxpython GUI, so I'm not able to access the Preferences menú :\ Change cat ~/.grass6/wx | grep icon to appearance;iconTheme;type;grass2 File /usr/local/grass-6.4.2RC1/etc/wxpython/icons/icon.py, line 433, in module 'scriptSave' : MetaIcon(img = iconSet['script-save'], KeyError: 'script-save' It's a bug, fixed in r48963. Martin -- Martin Landa landa.martin gmail.com * http://geo.fsv.cvut.cz/~landa ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] wxpyhton icon theme problem
El dj 27 de 10 de 2011 a les 13:51 +0200, en/na Martin Landa va escriure: Hi, 2011/10/27 Lluís Vicens ll...@sigte.udg.es: How could I change the icon theme on GRASS6.4.2RC1 from the terminal, or which document(s) should edit to do that? The problem is that once I compiled 6.4.2RC1 I've tried to change the icon theme and when I restarted the g.gui, an error appears and I cannot longer load the wxpython GUI, so I'm not able to access the Preferences menú :\ Change cat ~/.grass6/wx | grep icon to appearance;iconTheme;type;grass2 File /usr/local/grass-6.4.2RC1/etc/wxpython/icons/icon.py, line 433, in module 'scriptSave' : MetaIcon(img = iconSet['script-save'], KeyError: 'script-save' It's a bug, fixed in r48963. Martin Done! So many thanks Martin ;) Lluís attachment: face-wink.png___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] grass link libraries
how to solve this error? which libraries to be linked /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x34): error: undefined reference to 'G__gisinit(char const*, char const*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x61): error: undefined reference to 'Vect_open_new(Map_info*, char const*, int)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x88): error: undefined reference to 'Vect_default_field_info(Map_info*, int, char const*, int)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0xac): error: undefined reference to 'Vect_subst_var(char const*, Map_info*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0xc4): error: undefined reference to 'db_start_driver_open_database(char const*, char const*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0xda): error: undefined reference to 'db_begin_transaction(_db_driver*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0xe9): error: undefined reference to 'db_init_string(_db_string*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x138): error: undefined reference to 'db_set_string(_db_string*, char const*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x189): error: undefined reference to 'Vect_map_add_dblink(Map_info*, int, char const*, char const*, char const*, char const*, char const*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x198): error: undefined reference to 'db_get_string(_db_string*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x1a8): error: undefined reference to 'G_debug(int, char const*, ...)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x1c2): error: undefined reference to 'db_execute_immediate(_db_driver*, _db_string*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x1da): error: undefined reference to 'db_close_database(_db_driver*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x1e9): error: undefined reference to 'db_shutdown_driver(_db_driver*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x1fb): error: undefined reference to 'Vect_delete(char const*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x20a): error: undefined reference to 'Vect_hist_command(Map_info*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x216): error: undefined reference to 'G_get_window(Cell_head*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x225): error: undefined reference to 'Vect_build(Map_info*)' /usr/bin/ld: /tmp/ccfh4ykU.o: in function main:main.cpp(.text+0x234): error: undefined reference to 'Vect_close(Map_info*)' collect2: ld returned 1 exit status -- Regards, Mohammed Rashad K M M.S. (By Research) student Lab for Spatial Informatics Department of CSE International Institute of Information Technology Hyderabad, India ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Define statistical bins in GRASS
Greetings I have a raster image that I want to analyze its frequency inside defined bins. How can I define bins size and bins-limits in GRASS? THanks Antonio __ Information from ESET NOD32 Antivirus, version of virus signature database 6578 (20111027) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Is it possible to export a Raster to KML
Hi Thanks for all the feedbacks I have used it and It's ok but THe results are not much different if I use my data in WGS84UTM and reprojecting to EPSG:4326. Just a slightly difference. Is this expectable such a slightyly difference? (I'm not an expert in Geo Reference Systems) Thanks 2011/10/26 Markus Metz markus.metz.gisw...@googlemail.com katrin eggert wrote: Hi Maybe it would be better to explain that in manual entry. Just one more question: what is the EPSG code for that projection? http://www.google.com/search?q=google+kml+epsg - 4326 Thanks Kat 2011/10/26 Markus Neteler nete...@osgeo.org On Tue, Oct 25, 2011 at 6:32 PM, katrin eggert katrineggert1...@gmail.com wrote: Hello Daniel By reading the r.out.kml manual I have a few questions: 1- KML expects data to be in Latitude-Longitude using the WGS84 datum and EGM96 vertical datum. . (see also http://en.wikipedia.org/wiki/Keyhole_Markup_Language#Geodetic_reference_systems_in_KML ) My data is in WGS84 UTM 26N. Does this mean that I have to create a new location with this information Yes. you have to reproject the maps. Markus ___ 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] using a vector map as target map for raster map to georectify
Hello, Trying to use the georeferencing tool in 6.4.1, I have the following question: is it possible to define a vector map as target map when georeferencing a raster map ? I can't seem to find how to do this. Moritz ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] mapset not found: problem with file permissions?
I am having a difficult time accessing a workspace that is located on mounted drive via fstab in Ubuntu as follows: //some.windows.share/share$ /media/remoteDir cifs iocharset=utf8,credentials=/.../.../.credentialsFile,file_mode=0775,dir_mode=0775,uid=userNumber,gid=groupNumber I can read/write to the directories outside of GRASS. When I start grass65svn and navigate the workspace on the server, I cannot open it, but when I check permissions with ls -l it says I have rwx permissions. I get an error message that says GRASS cannot find the mapsset I am trying to open. I can open the same mapset if it is on my local drive. Same permissions on the local directory with ls -l. Any help would be greatly appreciated. Thank you. -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/mapset-not-found-problem-with-file-permissions-tp6937759p6937759.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] Is it possible to export a Raster to KML
On Wed, Oct 26, 2011 at 11:35 AM, Markus Metz markus.metz.gisw...@googlemail.com wrote: katrin eggert wrote: Hi Maybe it would be better to explain that in manual entry. Just one more question: what is the EPSG code for that projection? http://www.google.com/search?q=google+kml+epsg - 4326 Note that KML expects data to be in Latitude-Longitude using the WGS84 datum and EGM96 vertical datum as the manual says. This is not exactly EPSG:4326. I have added a map with geoid undulations in Trentino, Italy here: http://grass.osgeo.org/wiki/Global_datasets#EGM2008_Geoid_Data Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Random Forest Classifier
On Wed, Oct 26, 2011 at 10:30 AM, Mohammed Rashad mohammedrasha...@gmail.com wrote: Hi All, I am searching for an example of image classification using Random Forest classifier. I found R has a package for random forest classification. Anyone has done this classification using R and GRASS? please provide an example and tell me some sample data (posted earlier to osgeo-discuss, here for the record) I have collected some related articles: http://www.citeulike.org/user/neteler/tag/randomforest We have published on some years ago: http://www.citeulike.org/user/neteler/article/172938 GIS and the Random Forest Predictor: Integration in R for Tick-Borne Disease Risk Assessment Furthermore, we are currently proof-reading our new edited book: http://www.springer.com/earth+sciences+and+geography/geographical+information+systems/book/978-3-642-10594-4 which contains a related chapter. Any language or package example no problem. Does anyone did it in R? I have some (old) material here: http://www.grassbook.org/neteler/shortcourse_grass2003/notes7.html It is using rpart() but the syntax is pretty similar to randomForest(). Hope this helps Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] set up Grass 7 to run using eclipse or Ubuntu?
On Thu, Oct 27, 2011 at 10:31 AM, Matthew Mulbrandon mulb...@hotmail.com wrote: Hello, Just wondering if anyone has an example of how to set up python environment variables for grass 7 in Ubuntu. I am assuming it is different form Grass 6.5. I don't think that there are fundamental differences in setting up the environment. I am particularity interested if people are running Grass 7 from eclipse. This may help. http://grass.osgeo.org/wiki/Eclipse It's a wiki, please add a GRASS 7 section if needed. Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Reclassify float values
On Wed, Oct 26, 2011 at 6:27 PM, Luisa Peña luisapena1...@gmail.com wrote: Greertings I saw in r.reclassify help page that this module cannot be applied to float data and it advses to multiply by another value. Is there any other alternative? There was recently a dicussion on this in grass-dev: http://comments.gmane.org/gmane.comp.gis.grass.devel/45499 Maybe it gives some insights. Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] mapset not found: problem with file permissions?
Damian M wrote: I am having a difficult time accessing a workspace that is located on mounted drive via fstab in Ubuntu as follows: //some.windows.share/share$ /media/remoteDir cifs iocharset=utf8,credentials=/.../.../.credentialsFile,file_mode=0775,dir_mode=0775,uid=userNumber,gid=groupNumber I can read/write to the directories outside of GRASS. When I start grass65svn and navigate the workspace on the server, I cannot open it, but when I check permissions with ls -l it says I have rwx permissions. I get an error message that says GRASS cannot find the mapsset I am trying to open. I can open the same mapset if it is on my local drive. Same permissions on the local directory with ls -l. Any help would be greatly appreciated. If you want to select a mapset as the current mapset, you must be the owner; write permission is insufficient. This check is skipped for Windows versions of GRASS, but is performed for Unix versions regardless of the filesystem type. -- Glynn Clements gl...@gclements.plus.com ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Re: mapset not found: problem with file permissions?
Glen, Thank you for your reply. I am the owner of the folder and all contents. I set it when I mount the directory. (from cifs mount command in fstab: ...uid=myusername,gid=myusername...) -Damian -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/mapset-not-found-problem-with-file-permissions-tp6937759p6938787.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] ps.map arrow head
Vincent wrote: a bit of squeezed with ps.map : is there a simple way to draw arrowheads on top of vector lines in a map composition ? you mean like 'd.vect disp=dir' ? if so, not that I know of. I did not find any option in vlines instruction. Did I miss it ? Perhaps should I extract tnodes (or fnodes) from the source lines vector, then print arrowheads as symbols with vpoints instruction. you should make a new symbol without a tail in case the rotational alignment is not perfect, with the center at the arrow point. But I can't figure out how I can obtain the angle to rotate symbols the right way, ie finding the azimuth of the last (or first) segment of each line... perhaps 'v.to.points dmax=' or v.lrs to set the along-line node points. unfortunately there is no doffset= option to go with v.to.point's dmax=, as it would be nice to do like dmax=100 doffset=50 to get midpoints of 100m segments (see also the more complicated v.segment module) once 100m line segments are created (sorry no exact recipe for that comes to mind but it must be possible; maybe together with the v.to.points nodes?) you can use v.to.db to get azimuth of the line segments uploaded to the line segment vector's DB, then use db.execute to attach those to the point vector map, and any +90 degree rotation if it is needed. (typically grass uses degrees CCW from the +x axis for rotation) If anyone experienced this, I would be glad to know how you proceeded. hopefully the above gives you enough to figure something out. if so, please add the trick to the wiki, or maybe we could make a script. (ISTR there is something similar for ps.map there already, it would be good for things like railroad -+--+- lines) even better is if there is a postscript trick for this, then we could add --+-- somehow, like adding a direction=No|yes|tick instruction to vlines. if so we probably want to add a tick_spacing instruction too, probably using points as the distance unit for that, defaulting to something like 8mm. Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] ps.map arrow head
Thank you Hamish for these suggestions, I'll probably dig in the database direction, in order to create a labels layer, easy to add in the postscript composition. Bye, Vincent Le jeudi 27 octobre 2011 à 21:51 -0700, Hamish a écrit : Vincent wrote: a bit of squeezed with ps.map : is there a simple way to draw arrowheads on top of vector lines in a map composition ? you mean like 'd.vect disp=dir' ? if so, not that I know of. I did not find any option in vlines instruction. Did I miss it ? Perhaps should I extract tnodes (or fnodes) from the source lines vector, then print arrowheads as symbols with vpoints instruction. you should make a new symbol without a tail in case the rotational alignment is not perfect, with the center at the arrow point. But I can't figure out how I can obtain the angle to rotate symbols the right way, ie finding the azimuth of the last (or first) segment of each line... perhaps 'v.to.points dmax=' or v.lrs to set the along-line node points. unfortunately there is no doffset= option to go with v.to.point's dmax=, as it would be nice to do like dmax=100 doffset=50 to get midpoints of 100m segments (see also the more complicated v.segment module) once 100m line segments are created (sorry no exact recipe for that comes to mind but it must be possible; maybe together with the v.to.points nodes?) you can use v.to.db to get azimuth of the line segments uploaded to the line segment vector's DB, then use db.execute to attach those to the point vector map, and any +90 degree rotation if it is needed. (typically grass uses degrees CCW from the +x axis for rotation) If anyone experienced this, I would be glad to know how you proceeded. hopefully the above gives you enough to figure something out. if so, please add the trick to the wiki, or maybe we could make a script. (ISTR there is something similar for ps.map there already, it would be good for things like railroad -+--+- lines) even better is if there is a postscript trick for this, then we could add --+-- somehow, like adding a direction=No|yes|tick instruction to vlines. if so we probably want to add a tick_spacing instruction too, probably using points as the distance unit for that, defaulting to something like 8mm. Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
