[GRASS-user] Python Script for changing raster values
Greetings I have a classification raster (with values that ranges from 1-20) and I need to reclassify them. I mean, to change (as an example): 1- 255 2- 100 3 - 150 and I need to implement this on a Python script. What do you suggest to do? I mean, that is the most robust and easy way to implement this? Thanks Luisa ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Python Script for changing raster values
Following code could be one approach: os.system(cat %s | r.recode input=map_a output=map_recl % path_to_rules) where path_to_rules is a previously created (temp) file containg the reclassifiying rules as for example: 1:1:1.1:1.1 2:2:7.5:7.5 3:3:0.4:0.4 Christian. From: Luisa Peña Sent: Tuesday, September 07, 2010 12:37 PM To: GRASS user list Subject: [GRASS-user] Python Script for changing raster values Greetings I have a classification raster (with values that ranges from 1-20) and I need to reclassify them. I mean, to change (as an example): 1- 255 2- 100 3 - 150 and I need to implement this on a Python script. What do you suggest to do? I mean, that is the most robust and easy way to implement this? 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] NetCDF Data in GRASS?
Hello all, Does anybody have any experience with integrating NetCDF data into GRASS? That's a ton of great data and I'm wondering if there's a direct way of importing such files into a GRASS database. I've seen scripts that convert them to ArcGRID format, but that's not a very elegant solution, especially if you're dealing with long time series. Thanks a bunch! Daniel -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/NetCDF-Data-in-GRASS-tp5506213p5506213.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] NetCDF Data in GRASS?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 07/09/10 14:29, LeeDaniel wrote: Hello all, Does anybody have any experience with integrating NetCDF data into GRASS? No experience myself, but gdal can read them, so you should be able to get them into grass. Cheers, Rainer That's a ton of great data and I'm wondering if there's a direct way of importing such files into a GRASS database. I've seen scripts that convert them to ArcGRID format, but that's not a very elegant solution, especially if you're dealing with long time series. Thanks a bunch! Daniel -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkyGSFkACgkQoYgNqgF2egqYsQCfXy4eA/NYCPR9Dw9bFQrMY2kv UEIAn3DBAI3Prexv3uP9a5B1ec5ma7tA =KE2L -END PGP SIGNATURE- ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] GRASS starting problem - Mac
Hi, After a Mac-security-update I can't start GRASS anymore. I keep geting the same error: Dyld Error Message: Library not loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/QD.framework/Versions/A/QD Referenced from: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices Reason: no suitable image found. Did find: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/QD.framework/Versions/A/QD: unknown file type, first eight bytes: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 I allready tried to reinstalled GRASS (using the newest installer from http://www.kyngchaos.com/software/grass) Any idea what could be wrong and how to fix this? Thanks, Schorschli -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/GRASS-starting-problem-Mac-tp5506724p5506724.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] GRASS starting problem - Mac
Looks like your system got corrupted. Maybe an interrupted security update, though recent updates haven't touched QD.framework (according to timestamps on my Macs). Or some other poorly-made installer or updater messed around in the system. Are you having problems with any other applications? If you use Time Machine, I'd try restoring a previous state. Otherwise you may have to reinstall the system. Just to be sure - you did install the correct GRASS package for your system? Leopard/Snow Leopard - 10.5/10.6. On Sep 7, 2010, at 9:51 AM, schorschli wrote: Hi, After a Mac-security-update I can't start GRASS anymore. I keep geting the same error: Dyld Error Message: Library not loaded: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/QD.framework/Versions/A/QD Referenced from: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices Reason: no suitable image found. Did find: /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/QD.framework/Versions/A/QD: unknown file type, first eight bytes: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 I allready tried to reinstalled GRASS (using the newest installer from http://www.kyngchaos.com/software/grass) Any idea what could be wrong and how to fix this? Thanks, Schorschli -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/GRASS-starting-problem-Mac-tp5506724p5506724.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 - William Kyngesburye kyngchaos*at*kyngchaos*dot*com http://www.kyngchaos.com/ We are at war with them. Neither in hatred nor revenge and with no particular pleasure I shall kill every ___ I can until the war is over. That is my duty. Don't you even hate 'em? What good would it do if I did? If all the many millions of people of the allied nations devoted an entire year exclusively to hating the it wouldn't kill one ___ nor shorten the war one day. Ha, ha And it might give 'em all stomach ulcers. - Tarzan, on war ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Python Script for changing raster values
Christian Schwartze wrote: Following code could be one approach: os.system(cat %s | r.recode input=map_a output=map_recl % path_to_rules) where path_to_rules is a previously created (temp) file containg the reclassifiying rules as for example: os.system() shouldn't be used. E.g. the above will fail if path_to_rules contains spaces (as is often the case on Windows). The preferred approach for the above command is: grass.run_command(r.recode, input=map_a, output=map_recl, rules = path_to_rules) If you have a command which requires input via stdin (rather from a named file), use e.g.: rules_f = open(path_to_rules, r) try: grass.run_command(r.recode, input=map_a, output=map_recl, stdin = rules_f) finally: rules_f.close() Or, if you can rely upon Python 2.5 or later, use: from __future__ import with_statement with open(path_to_rules, r) as rules_f: grass.run_command(r.recode, input=map_a, output=map_recl, stdin = rules_f) Also, even in shell scripts cat file | command is suboptimal; use command file instead. -- 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] GRASS GIS 6.4.0 released
*Press Release The GRASS Development Team announces* GRASS GIS 6.4.0 released We are pleased to announce the release of GRASS GIS 6.4.0http://grass.osgeo.org/, the first in the new line of 6.4 stable releases. As a stable release 6.4 will enjoy long-term support. The next release (6.4.1) will introduce a few new features which are still undergoing final testing, but after that all further 6.4 releases will be bugfix-only. Due to our highly conservative stabilization policy this is the first official version of GRASS to introduce new features since October 2006 and supersedes the previous stable line of GRASS 6.2. As such the floodgates are open and there are many new features to explore and many new structural improvements to be found in the software. GRASS 6.4 brings a number of exciting enhancements to the GIS. Our new *wxPython graphical user interface* (wxGUI) is debuted, Python is now a fully supported scripting language, and for the first time since its inception with a port from the VAX 11/780 in 1983, GRASS will now run natively on a non-UNIX based platform: MS-Windows! In addition to bringing the software to a host of new users, the ability to run GRASS on any common computer platform furthers our goal of open access to the software. We hope you will enjoy the ability to use this program on the systems that are most convenient to you and your work. Due to the freshness of *WinGrass* there may still be a few rough edges yet to discover, but after more than a year of dedicated testing and quality-assurance review we are very pleased with the results. Users can be confident to use this version for their day to day work, indeed due to the open development model many already do. Existing UNIX and Mac users will be happy to know that these new features do not disrupt the base GIS which remains as solid as ever and fully backwards compatible with earlier GRASS 6.0 and 6.2 releases. The venerable Tcl/Tk GUIs are also still available if you prefer to use them. The GRASS software including over 400 built-in analysis modules and 100 community supplied add-on modules and toolboxes can be downloaded for free from the main GRASS website at http://grass.osgeo.org, or from many local mirrors worldwide. In addition to the extensive documentation which comes with the software, our Wiki help system http://grass.osgeo.org/wikicontains a wealth of user supplied tips and tricks, tutorials, and guides. Since 6.4 entered the testing phase work has begun on GRASS 7 and is progressing rapidly, including many new wxGUI improvements and tools which we hope to bring over for the upcoming 6.4.1 release. About GRASS GIS The *Geographic Resources Analysis Support System*, commonly referred to as GRASS, is a Geographic Information System (GIS) providing powerful raster, vector, and geospatial processing engines in a single integrated software suite. GRASS includes tools for spatial modeling, visualization of raster and vector data, management and analysis of geospatial data, and the processing of satellite and aerial imagery. It also provides the capability to produce sophisticated presentation graphics and hardcopy maps. GRASS has now been translated into twenty languages and supports a huge array of data formats. GRASS is a founding member of The Open Source Geospatial Foundationhttp://www.osgeo.org/(OSGeo), a non-profit legal entity which has enjoyed extraordinary growth. We expect that this formal infrastructure will guarantee that the GRASS community will be well supported and vibrant far into the future. GRASS is currently used around the world in academic and commercial settings as well as by many governmental agencies and environmental consulting companies. It runs on a variety of popular hardware platforms and is Free open-source software released under the terms of the GNU General Public License http://www.gnu.org/licenses/gpl-2.0.html. Users are encouraged to study, customize, extend, improve, and (if necessary) diagnose and repair the inner workings of any part of the program. We believe that scientific progress depends on the reproducibility of results, which in turn depends on the unhindered ability of the user to know, evaluate, double-check, and learn from all algorithms and methodologies used in the process of their work. Screenshots - Screenshots http://grass.osgeo.org/screenshots/index.php of GRASS in action Platforms supported by GRASS GNU/Linux, Mac OS X/Darwin, Microsoft Windows (native using MinGW or with full UNIX support via Cygwin), Sun Solaris (SPARC/Intel), Silicon Graphics Irix, HP-UX, DEC-Alpha, AIX, the BSD family, iPAQ/Linux and other UNIX compliant platforms. GRASS runs on both 32 and 64 bit systems with large data file (2GB) support for most key modules. Software download/CDROM - http://grass.osgeo.org http://grass.osgeo.org/download/index.php - http://grass.ibiblio.org http://grass.ibiblio.org/download/index.php - numerous mirror sites
Re: [GRASS-user] NetCDF Data in GRASS?
LeeDaniel wrote: Does anybody have any experience with integrating NetCDF data into GRASS? Rainer wrote: No experience myself, but gdal can read them, so you should be able to get them into grass. right, see http://grass.osgeo.org/wiki/NetCDF (feel free to expand that page) pre-processing into a GeoTiff with gdal_translate is a possibility, and gdalinfo should generally be the first thing you do anyway. Hamish ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
