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Analyzing regional income differences

November 29, 2014 Anita Graser

On my quest to create test data for spatial statistics, I’ve discovered income data for Austria per municipality on a news paper website:

Screenshot 2014-11-29 23.06.46

For further analysis, I decided to limit the area to Vienna and Lower Austria. Since the income data included GKZ “Gemeindekennzahl” IDs, it was possible to join them to municipalities extracted from OpenStreetMap using QuickOSM for QGIS. GRASS v.clean was used to clean the vector topology to the point where PySAL was able to compute spatial weights.

Using PySAL, I then computed income clusters: blue regions represent low clusters while red regions represent high clusters …

Municipality border data (c) OpenStreetMap and contributors Income data source: Statistik Austria via derStandard

Municipality border data (c) OpenStreetMap and contributors
Income data source: Statistik Austria via derStandard

The results show a statistically significant cluster of low income in the north west, in the area called Waldviertel, as well as a cluster of high income containing many of the municipalities surrounding Vienna, an area often referred to as the “Speckgürtel” (“bacon belt”).


by underdark at 10:27 PM under pysal , qgis (Comments)

Installing PySAL for OSGeo4W

July 13, 2014 Anita Graser

Today’s post is a summary of how to install PySAL on Windows for OSGeo4W Python.

The most important resource was https://trac.osgeo.org/osgeo4w/wiki/ExternalPythonPackages

In the OSGeo4W Shell run:

C:\Users\anita_000\Desktop>curl http://python-distribute.org/distribute_setup.py | python

Update: Note that python-distribute.org has gone down since I posted this. See http://www.gossamer-threads.com/lists/python/python/1158958 for more info.

Then download https://raw.githubusercontent.com/pypa/pip/master/contrib/get-pip.py to the Desktop and run:

C:\Users\anita_000\Desktop>python get-pip.py

When pip is ready, install PySAL:

C:\Users\anita_000\Desktop>pip install pysal

Test the installation:

C:\Users\anita_000\Desktop>python
Python 2.7.5 (default, May 15 2013, 22:44:16) [MSC v.1500 64 bit (AMD64)] on win 32
Type "help", "copyright", "credits" or "license" for more information.
>>> import pysal

by underdark at 6:36 PM under gis , osgeo4w , pysal (Comments)

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