Wednesday, November 28, 2012

New downloads available

I'm happy to announce additional Shapefile downloads on
those include buildings, national parks, provincial and national boundaries for Laos and Cambodia.
Please find all files at

Two villages close to Pakxan with buildings displayed in QGIS.
Data © OpenStreetMap contributors

Monday, November 19, 2012

Nam Ngum 2 dam three year ago

Yesterday I found by chance a picture that is exactly three years old. I took it when I flew from Phonsavan back to Vientiane and it shows the Nam Ngum 2 dam under construction.

Nam Ngum 2 dam under construction on 21. November 2009

Wednesday, November 7, 2012

Heat maps with Python

Heat maps are a quite often discussed topic on, probably because they are easy to understand and very appealing when showing spatial distributions of features. Working with a Python web framework, I looked for a Python way to create heat maps. Finally I came up with a script that uses OGR to read an input Shapefile and matplotlib to do the actual work.