Open Source Geographic Information System (GIS)
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Tangible Landscape webinar is Aug 31, 6pm GMT.  See details here:
http://www.geoforall.org/webinars/
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For species or vegetation modelling, one of the first choices to make is the selection of explanatory variables, which in most cases will include climatic or bioclimatic data sets. One of the most …
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London Rising: Printing a 3D City Map from LiDAR
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When Andrew Godwin heard that LiDAR had become "open data" at the Environment Agency of England he downloaded the available raster Digital Elevation Model (DSM) to create a scale model of a small slice of central London. Godwin's main challende was to refine the jagged building edges into a smoother model. He "averaged out points to make a lower-detail heightmap, snapped the heights to 3m intervals and applied neighbour-based smoothing to the whole thing” Goodwin writes in his blog. Maybe creating the DSM with our spike-free algorithm would lead to less jagged but still crisp building edges ... (-:
Thus, when I finally gave in and bought a 3D printer at the start of this year, I'd had a rough project in mind for a while - to 3D print maps with actual vertical relief. Initially, I had been looking at large-scale terrain - in the style of the old raised-relief poster maps - but then a story ...
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There are still 15 days for submitting a contribution to the

**"OGRS 2016" SYMPOSIUM**
http://2016.ogrs-community.org/

The Open Source Geospatial Research & Education Symposium 2016 (12-14 October 2016), is an international meeting of researchers and developers interested in the management of geospatial data using Open Source Software.
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Landsat Collections. The primary focus of 2016 is to implement a collection management scheme for Landsat Level-1 products that will provide a quality controlled selection of radiometrically calibrated and consistently geolocated data with sufficiently geographically aligned pixels to support ...
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Use R to get gbif data into a GRASS database

A major source of species occurrence data is the Global Biodiversity Information Facility (GBIF) data portal. In this post I provide an example using R and GRASS to obtain occurrence data from GBIF and import it into a GRASS GIS database.
 
Use R to get gbif data into a GRASS database

An important source of species occurrence data is the Global Biodiversity Information Facility (GBIF) data portal. In this post I provide an example using R and GRASS to obtainoccurrence data from GBIF and import it into a GRASS GIS database.
Introduction GBIF The Global Biodiversity Information Facility (GBIF) is an international open data infrastructure that allows anyone, anywhere to access data about all types of life on Earth, shar…
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Tangible Landscape - use the power of GRASS GIS through a sandbox

This video shows a classic interaction with terrain in order to manage water flow (simulated by r.sim.water). Data are georeferenced (in GRASS GIS Location), so it can be combined, for example, with an orthophoto.

Here is a link to the repository:

https://github.com/ncsu-osgeorel/grass-tangible-landscape
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Paulo van Breugel's profile photoRob B.'s profile photo
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Rob B.
 
This seems like it would be really cool to use the sand as "Ground level zero" then 3d print more accurate heights for existing structures like bridges GREAT WORK! 
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Jorge Cornejo
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I wonder if anybody has tried to use this topo box technology.
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Václav Petráš's profile photoJorge Cornejo's profile photo
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+Leslie Sox The guys name is Oliver Kreylos - http://lakeviz.org/forums/forum/ar-sandbox-forum/  Just started to build my own VRSandbox!  
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Fixing Intensity Differences between LiDAR Flightlines
We sometimes come across #LiDAR  flightlines whose returns have intensity values that are drastically different than those of other flightlines. Using intensity rasters with dark strips as input for land cover classification may likely make things worse. Radiometrically “correct” intensity calibration is a complex topic. We here describe a “quick and dirty” fix using +LAStools to the situation shown below so that average intensity rasters at least “look” sensible ... (-:
Visiting our users on-site, such as last week at Mariano Marcos State University in Ilocos Norte in the Philippines, we sometimes come across situations as pictured below where the intensity values…
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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.
 
How to use new vector legend in GRASS GIS 7.2

https://www.youtube.com/watch?v=7IUUG2mZ3Tg
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Atlas mundial de Contaminación lumínica

Desde el inicio de la vida, los seres vivos han adaptado sus procesos biológicos a los ciclos astronómicos fundamentales de cambio de estaciones y alternancia de día-noche. La contaminación lumínica causada por el ser humano amenaza con alterar el segundo ciclo, al eliminar la noche. Por tanto, a pesar de que sus consecuencias no son conocidas con exactitud, sabemos que afecta tanto al medio ambiente y a los seres vivos como a la salud humana.
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English plz
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v.net.distance network analysis for all GB postcodes (1.6M) to train stations (3k) via Ordnance Survey Open Roads (3M), mapped in CartoDB: https://mikerspencer.cartodb.com/viz/c7cf448e-2727-11e6-8d2f-0ecd1babdde5/public_map. For those interested, it took ~ 23 hrs of processing time running single core on an Intel i5 4460 and used up to 16GB of ram and 6GB of swap partition. Follow the school/hospital example to try for yourself! https://grass.osgeo.org/grass70/manuals/v.net.distance.html
Contains Ordnance Survey data © Crown copyright and database right 2016. Intellectual copyright © Mike Spencer http://mikerspencer.com/ — Map created by Mike Spencer in CartoDB
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Are you using Matplotlib and looking for consistent color tables in GRASS GIS or do you want to use one of Matplotlib color palettes in GRASS GIS?

r.color.matplotlib module is in GRASS Addons for you!

Install using:

g.extension r.color.matplotlib

Looking forward to your feedback!
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Tutorial how to build your own Tangible Landscape.

Why to limit yourself to GUI, command line, and Python interface? Use your hands and a sand box!
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GRASS GIS 7.0.4 released
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.
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In modelling, multicollinearity in the set of predictor variables is a potential problem. One way to detect multicollinearity is the variance inflation factor analysis (VIF). In GRASS GIS, the VIF for a set of variables can be computed using the r.vif addon. This addon let's you furthermore select a subset of variables using a stepwise variable selection procedure, in which variables are removed till the highest VIF values is less than a user-defined threshold value. In this post I introduce the addon and provide some examples
Abstract In modelling, multicollinearity in the set of predictor variables is a potential problem. One way to detect multicollinearity is the variance inflation factor analysis (VIF). In GRASS GIS,…
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Jorge Cornejo
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So I was smitten with the #VRSandBox that I started to create one! Got the first step done. Kinect is working with Ubunty. Next, build the sand box and install the overhead projector and kinect.

Augmented Reality Sandbox - real-time topographic contour line generation https://youtu.be/Ki8UXSJmrJE
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Jorge Cornejo
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I kid you knot!  several of the new member requests are people looking for the other kind of "GRASS"
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People who need lawn care tips? :)
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Inviting scholars and experts on geoinformatics field to ISYG 2016, to share and discuss the advancement of geospatial science. The symposium will be held on Oct 18th in Malang, Indonesia.


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