Open Source Geographic Information System (GIS)
See all
Members (1,621)
GRASS GIS's profile photo
Ismael Gómez's profile photo
Jorge Cornejo's profile photo
Yann Chemin's profile photo
! 'Alena 'Lubimova !'s profile photo
Aimee Schmidt's profile photo
A. Jacques's profile photo
Adrian Wooster's profile photo
Albert Hans Argote Adrian's profile photo
ALAKESH BARMAN's profile photo
Akshay Krishnan's profile photo
Alex Ding's profile photo
Alan Ko's profile photo
Alemu Tilahun's profile photo
Abdelazziz Chemchaoui's profile photo
Abdishakur Hassan's profile photo
Abi Cruz's profile photo
Abner Bustos Zelada's profile photo
Agung Nugroho Zaini's profile photo
Alessandro Sgambati's profile photo
Adam Hortop's profile photo
Ailis Elizabeth Epa's profile photo
Adrian Castello Martinez's profile photo
Adrian Coman's profile photo

Stream

Join this community to post or comment
 
 
A number of planned changes affecting Landsat data were published in a recent Update (http://landsat.usgs.gov/about_LU_Vol_9_Issue_1.php). Since that time, there have been modifications to the plans initially shared.  The originally published information is in italics below, and the modifications are noted in the UPDATE area of each section.
View original post
2
Add a comment...

Jorge Cornejo
moderator

General  - 
 
Does anybody have any experiences with LIDAR scanning using quad-copters/drones?
10
Add a comment...

Jorge Cornejo
moderator

News  - 
 
Production of a conterminous US 1-meter elevation layer projected to the UTM coordinate system will begin in early 2015. This 1-meter dataset will increase in geographic coverage as new high-resolution lidar source becomes available.
The National Elevation Dataset (NED) serves the elevation layer of The National Map, and provides basic elevation information for earth science studies and mapping applications in the United States. Scientists and resource managers use NED data for global change research, hydrologic modeling, ...
1
1
Heath Harwood's profile photo
Add a comment...
 
Hi, slowly trying to get comfortable with Grass GIS.  Today I am looking at how labels are controlled and displayed.  I set up a new vector layer, clicked the pen icon, clicked the Digitize New Point icon and inserted four points onto the new layer.  Here are my observations, 1. even though I started out on the newBasins layer, the combo box reverted to no selection.  2.  The label control appears to correctly display the background color, label border color, but does not appear to properly render the label color.  3.  Labels appear to only be rendered below the point and it's not clear how it determines what left, center or right alignment positions.
I can live with everything except the display of the label.  I need to be able to see the label.  Is that a bug or have I overlooked something? 
Thanks.  Using 7.0 RC1
3
Václav Petráš's profile photo
2 comments
 
The solution is written here (for legend and scale bar but I suppose it is the same):

http://grasswiki.osgeo.org/wiki/WinGRASS_errors#Legend_or_scale_bar_does_not_show_any_text
Add a comment...
 
 
GRASS GIS tutorials as part of our redesigned Geospatial modeling and analysis course at NCSU
Syllabus · Schedule · Course logistics · Lectures · Assignments · Projects. List of GRASS GIS assignments. Data acquisition and integration - explore the provided data set in GRASS GIS · Geospatial data models · Data display and visualization · Geospatial Analysis I: global, zonal and focal ...
View original post
5
1
Samuel Fernando Mesa Giraldo's profile photo
Add a comment...
 
 
Organizers opened the Call for Papers and Workshops.

We are proud to announce the second edition of the FOSS4G (Free and Open Source Software For Geospatial) Europe Conference.
The conference will bring together some of the most fervent developers, users and promoters of FOSS4G from Europe and beyond; it will also foster closer interactions with and amongst European communities in order to share ideas for improving geodata, software and applications, openness, and availability. This international event will be held in Italy at Politecnico di Milano, Como Campus (http://www.polo-como.polimi.it/en/), from July 14 through 17, 2015.

http://europe.foss4g.org/2015/#calls
Free and Open Source For Geospatial European Conference
View original post
2
1
gopal das's profile photoFrancesco de Virgilio's profile photo
5 comments
 
hi grass work in recode related a not in same a process of ERDAS basis. How to these process define. we have very problem in these process. Recode  and reclassify are defining in ling are provided.
Add a comment...
 
GRASS GIS presence at AGU Fall Meeting 2014:

http://grasswiki.osgeo.org/wiki/AGU_Fall_Meeting_2014:_GRASS_related_presentations_and_posters

Check out also presentations from FOSS4G 2014, all of them have associated videos:

http://grasswiki.osgeo.org/wiki/FOSS4G2014:_GRASS_related_workshops_and_presentations

Now get ready for EGU and see grass-dev mailing list for GRASS community efforts.

The map in the graphics is from a work by Tomasz Stepinski and Jaroslaw Jasiewicz.
5
4
Carlos Javier Delgado's profile photoCarlos Delgado's profile photo
Add a comment...
 
 
Hierarchical image segmentation
Ingredients are a colored infrared image (CIR), GRASS GIS and some of its features (i.segment, i.segment.hierarchical, g.gui.mapswipe,) and a tricky landscape with heterogeneous geomorphology and heterogeneous forest stands with various combinations of spru...
Ingredients are a colored infrared image (CIR), GRASS GIS and some of its features (i.segment, i.segment.hierarchical, g.gui.mapswipe,) and a tricky landscape with heterogeneous geomorphology and heterogeneous forest stands w...
View original post
1
1
Carlos Antonio López Sánchez's profile photo
Add a comment...

Created by

About this community

Tutorials, Tips, and News Regarding the Open Source GIS Software GRASS. Twitter: @GRASSGIS Youtube: /GRASSGISNews GRASS GIS (Geographic Resources Analysis Support System) is a free, open source geographical information system (GIS) capable of handling raster, topological vector, image processing, and graphic data.
 
GRASS GIS 7.0.0

We are pleased to announce the new stable release of GRASS GIS 7.0.0

The GRASS GIS Development team has announced the release of the new major version GRASS GIS 7.0.0. This version provides many new functionalities including spatio-temporal database support, image segmentation, estimation of evapotranspiration and emissivity from satellite imagery, automatic line vertex densification during reprojection, more LIDAR support and a strongly improved graphical user interface experience.

http://grass.osgeo.org/news/42/15/GRASS-GIS-7-0-0/
GRASS GIS is a free Geographic Information System (GIS) software used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization.
28
14
Pierluigi Maria Bovi's profile photophilippe roure's profile photoElena Mezzini's profile photoIsmael Gómez's profile photo
 
Grass vs. Archgis
Can anyone tell what is the big difference, exept from the pricetag? 
Add a comment...
 
 
Call for submissions

For the first time, FOSS4G-Europe is organizing a water resources track which will run as a single-track over one day of presentations. Proposals for presentations can be on achieved results, case studies work in progress and demo of FOSS4G tools developed or applied to provide access to both basic and sophisticated simulation/optimization information in the water resources domain.

The Water track will focus on the functionality of FOSS4G tools as well as their future developments and improvements

http://europe.foss4g.org/2015/Call_water-track
Free and Open Source For Geospatial European Conference
View original post
1
Add a comment...
 
 
...testing welcome!
[GRASS-dev] GRASS GIS 7.0.0 RC2 released. Markus Neteler neteler at osgeo.org. Mon Feb 9 12:18:21 PST 2015. Previous message: [GRASS-dev] [GRASS GIS] #2582: please restore important thematic map features themetype, themecalc etc. Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ...
View original post
6
1
Leonard Kong's profile photoYann Chemin's profile photo
 
When I try to import a shp file, I get Grass 7 has stopped working.  Selecting a shp file does list that projection matches.
Add a comment...
 
Hi: I'm new to Grass GIS and going through the Quick wxGUI Tutorial on my windows 8 machine running Grass GIS 6.4.4.  I get a memory allocation error when attempting to generate a Fractal surface which concerns me but wasn't enough to get me to seek help.  What did prompt this request for assistance is a DBMI-DBF driver error: Error while executing: 'BEGIN TRANSACTION' when attempting to Update attributes->Update area in the vector modules portion of the walkthrough.  It is a problem with Win8? or is there something else that is causing this?  Without being able to get past this, Grass GIS is not usable.
Thanks for your help
1
Yann Chemin's profile photoLeonard Kong's profile photo
6 comments
 
Nothing happens when I press the pen button.  It's like the program is in the wrong state.  Judging from your reply, I'm assuming that the feature does work, so I'll assume I just got the program in the wrong state.  Will revisit when I get a little more experience with the program.
Add a comment...
 
 
What's new in a nutshell

The graphical user interface based on wxPython (introduced in GRASS GIS 6.4) has been enriched with many new features in order to make complex GIS operations available as simple as possible. The old Tcl/Tk based GUI has been dropped. Relevant new features are available in the core system, among the most important the  new Python interface to the C library. This new feature permits Python developers to create new modules in a simple way while at the same time creating powerful and fast modules. Furthermore, the vector library was particularly improved to make it faster and more efficient with support of  huge files. This required a  easy to manage topology format update including a new spatial index. Finally, there are a series of new modules to analyse raster and vector data; some of the already existing modules were improved and made faster (some even 1000 x faster).
View original post
6
4
philippe roure's profile photoSamuel Fernando Mesa Giraldo's profile photoYann Chemin's profile photoCarlos Delgado's profile photo
2 comments
 
in these software  re-code process and attribute are not show in these process. 
Add a comment...
 
Joinup reporting about usage of GRASS GIS and QGIS during open source GIS week for Athens students.
1
3
Markus Neteler's profile photoCarlos Delgado's profile photo
Add a comment...
 
Open Hub GRASS GIS Addons stats: https://www.openhub.net/p/grass_gis_addons

Check out recent statistics, claim commits, and add GRASS GIS Addons to projects you are using!

Also, contribute your own scripts and modules so that this repository of additional tools for GRASS GIS continues to grow.

Thanks to Black Duck Software, Inc. for running Open Hub.
5
3
Yann Chemin's profile photoHelmut Kudrnovsky's profile photoMarkus Neteler's profile photoCarlos Delgado's profile photo
 
Created an alias, thanks, it is nice to see the work we contribute in a new light !
Add a comment...
 
Steps to get R to work from the WinGRASS command line
2
2
pierluigi de rosa's profile photoCarlos Delgado's profile photo
Add a comment...
 
A small introduction to an GRASS addon to recode rasters based on the values in a csv file.
5
3
Bernier sylvie's profile photoCarlos Delgado's profile photo
Add a comment...