TheMapIsNotTheTerritory on mapping reality subsets



geospatial

WhereCampEU 2011

29 May 2011
Posted by christian

WhereCampEU is by far the coolest geo event I know of. I attendet the first WhereCampEU last year in London, which was really fantastic, and this WhereCampEU in Berlin was in my perception even better! The event was awesomely well organized. The venue was perfect, located in one of the coolest neighborhoods of Berlin (Prenzlauer Berg), in the GLS Sprachenschule, a well renovated "Grüderzeitliches" (late 19th century or early 20th century) building I would guess. The sponsored lunch also was of really good quality, never had better food at an conference lunch even the most so called Gala Dinner menues on other conferences would have to hide behind this. ;)

Posted by christian

This is a detailed HowTo on deploying a MapProxy instance on Enterprise Linux (CentOS 5.5) for production. I worked this out for the deployment of the CRC806-Database MapProxy instance. It will describe a setup using Apache with FastCGI (mod_fastcgi or mod_fcgid) on a blank CentOS 5.5 amd64, which is also described shortly and more generally (focused on debian/ubuntu) in the MapProxy documentation.  

Posted by christian

This is a short HowTo on installing MapProxy on a amd64 CentOS5 server.

The following information is compiled from here and here and the MapProxy Mailinglist.

As root do:
 

Posted by christian

In this tutorial you can find out about, how you get your Sketchup 3D models into the deegree3 WPVS backend.

Be aware, that this is a quick and dirty write down of a CityGMLConverter howto short before the deegreeday, to have a complete WPVS tutorial. This tutorial will be worked out with more detail later on...

The deegree3 DataManager tool will accept your models in VRML or CityGML format. In this tutorial, a method to get deegree3 compilant CityGML out of Sketchup .skp models, will be described. 

1 Download some test data

You can find a lot of 3D Model on Googles 3DWarehouse. For this tutorial we will download three buildings of Barcelona. 

I choosed the following 3:

Posted by christian

This is a short tutorial on how to clip an SRTM DEM file with gdal_translate to a smaller spatial extent provided by an other dataset.

To proceed you will need GDAL installed on your computer. For information on how to obtain and install the  Geospatial Data Abstraction Library (GDAL), see this website. If you are a lucky ubuntu or debian user, you can install GDAL with the following simple command:

sudo apt-get install gdal-bin

 

1 Download the SRTM data

Go to: http://srtm.csi.cgiar.org/

Posted by christian

 This is a basic tutorial on rendering OpenStreetMap (OSM) Maps with Maperitve.

1 Maperitive Installation

To install Maperitive on your computer please refere to the openstreetmap wiki.

-> http://wiki.openstreetmap.org/wiki/Maperitive

On this page you will also find valuable additional Info about Maperitive.

 

2 Get the OpenStreetMap Data

 In this tutorial, we will produce a OSM map of Barcelona, Spain.

Downlaod the spain.bz2 OSM file for from: http://download.geofabrik.de/osm/europe/

Extract the bz2 file to a working directory (for example 'Data') in the Maperitive installation folder: ~/Programme/Maperitive/Data

 

WhereCampEU

16 Mar 2010
Posted by christian

Last week I went to London to attend the WhereCampEU. It was amazing! I am still flashed, I kind of feel like floating (at least) a meter over ground. :-) Here is the great intro video of the conference, which Christopher presented at the WhereCampEU Kick off:

Posted by christian

I figured out two different approaches, to get 3DWarehouse SKP/KML/COLLADA models into CityGML, which I want to share with you (this is all very trivial, but If you don't know it, it can cost quiet some time to find the right tools for doing this).

The first way is to use the CityGML PlugIn for Sketchup from www.citygml.de.

Posted by christian

One of the few available CityGML Viewers out there is LandXplorer CityGML Viewer from Autodesk.
As you can find out on their homepage, it is a proprietary product and at the moment only available for MS Windows Platforms.
This is normally bad news fro Linux users like me. But luckily there is wine.

Posted by christian

Hello,

I tried to setup a deegree-WPVS on a 64Bit Ubuntu Linux environment and encountered some Problems with that. The thing that wondered me, was, that I first made this procedure on my Laptop, running Ubuntu 9.04 (but in 32Bit environment), and everything went fine without a problem.

On my 64Bit Desktop it gave me the following error (in catalina.out):