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GRASS GIS - The World Leading Free Software GIS

GRASS GIS - The World Leading Free Software GIS

http://grass.fbk.eu/

Related:  GIS and Maps

FMEpedia - Reading Complex XML or GML using the XMLFlattener Many users have problems reading complex XML or GML. In the past you had to make xfMap or XQuery scripts. To address this we recently we added the concept of XML flattening to our XML and GML readers. However, sometimes you have XML elements or attributes that need to be processed within a workspace, such as the result from a URL request. SpatialEcology.Com Copyright (c) 2009-2012 Spatial Ecology LLC Before proceeding with the installation and/or use of this software please read the following terms and conditions of this license agreement. The license agreement applies to both the GME interface and the installation program. By installing or using this software you indicate your acceptance of this agreement. If you do not accept or agree with these terms, you may not download, install or use it. Permission is hereby granted, free of charge, to use this software and associated documentation files (the "Software") subject to the terms of this EULA.

GRASS GIS manual: v.lidar.edgedetection v.lidar.edgedetection - Detects the object's edges from a LIDAR data set. vector, LIDAR, edges v.lidar.edgedetectionv.lidar.edgedetection helpv.lidar.edgedetection [-e] input=name output=name [see=float] [sen=float] [lambda_g=float] [tgh=float] [tgl=float] [theta_g=float] [lambda_r=float] [--overwrite] [--verbose] [--quiet] Flags: -e Open Source Tool Sets for Creating High-density Maps A few weeks ago I wrote about some of the building blocks available to create engaging maps in Drupal . The module ecosystem around maps and other geospatial functionality is pretty flexible, but there are some situations where Drupal might not be the best fit. There are some great tools out there to build out sites when the situation calls for little else besides a map display, or when processing and rendering tens of thousands of geospatial features. In this blog post, I’m going to talk about two in particular, Mapbox and CartoDB .

FMEpedia - SherbendGeneralizer Examples SherbendGeneralizer is an FME 2011 transformer for 'smarter' generalization, which preserves original topology of the features. The goal of the Sherbend algorithm is to reduce unnecessary details on a line based on the analysis of the line’s bends. Sherbend is a constraint based algorithm that preserves topology of the lines and points in the input dataset. The Sherbend algorithm iteratively generalizes bends in a line by using the diameter parameter to select bends for generalization. ArcGIS for AutoCAD Overview ArcGIS for AutoCAD is a free, downloadable plug-in application for AutoCAD that provides interoperability between AutoCAD and ArcGIS. Within the AutoCAD environment, you gain easy access to GIS maps in the form of map services, image services, and feature services hosted by ArcGIS Enterprise, or maps, imagery and feature sources you discover on ArcGIS Online. Additionally, ArcGIS for AutoCAD allows you to edit ArcGIS data created locally within the AutoCAD drawing or exported from ArcGIS Desktop. Use ArcGIS for AutoCAD to

A Beginner’s Guide to pgRouting Please read the new instructions for pgRouting 2.0. The aim of this post is to describe the steps necessary to calculate routes with pgRouting. In the end, we’ll visualize the results in QGIS. The FME Evangelist » FME2011 Use Case: Joiner vs FeatureMerger Hi FME’ers, Interacting with FME users I see various points of view on the merits of the Joiner transformer versus the FeatureMerger. Although both transformers carry out similar actions, it’s not clear to users when you should use each of these – particularly in relation to workspace performance. So this post will indulge in some investigative journalism! I’ll compare and contrast these transformers, to see where you would want to use each of them, and throw other transformers – such as the updated SQLExecutor and the new FeatureReader - into the mix as potential alternatives.

Drive Time Isochrones – An Example Using Finnish Airports Site analyses can benefit greatly from using “drive-time” isochrones to define the study area. Drive time isochrones are often significantly different from simple buffer areas which disregard natural barriers such as rivers or slow roads. Of course, creating drive time isochrones requires more input data and more compute-intensive algorithms than a simple buffer analysis. It is necessary to create a routable network graph with adequate weights to be used by the routing algorithm. One of the most popular routing applications in the open source world is pgRouting for PostGIS enabled databases.

The FME Evangelist » FME 2011 Special: The FeatureReader Hi all, If you’ve used FME2011 – or attended any of our FME World Tour events – then you may have noticed a new transformer called the FeatureReader. It’s not often a single transformer gets a whole FME Evangelist post to itself, but this remarkable piece of functionality is going to be very popular with power users, besides simple enough for anyone to understand. Ladies and gentlemen, I give you the FeatureReader! What Does it Do? Well, we like to give our FME transformers names that are self-explanatory, and it doesn’t get much simpler than this. The FeatureReader transformer, reads features!

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Installation on Ubuntu — Open Source Routing Library Install required packages sudo apt-get install build-essential git-core cmake sudo apt-get install postgresql-8.3-postgis postgresql-server-dev-8.3 If you’re not planning to install CGAL from Ubuntu multiverse, you can use default Boost library from the repository. This will be version 1.34 at the moment. sudo apt-get install libboost-graph-dev For Driving Distance Traffic signs and signals About the images We have made available more than 600 traffic-sign images from those in the publication Know your traffic signs. They are grouped in the same categories.

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