Nordpil

Blog

Assorted blog posts related to the work at Nordpil, by Hugo Ahlenius. The blog covers notes and musing on graphic design, cartography, GIS, productivity and much more.

QGis python bindings with arcpy
QGis python bindings with arcpy

I have very mature development environment in python 2.7.5, centered around ArcPy (ArcGIS python bindings) and iPython (a very useful python shell). I just updated my QGis install (using OSGeo4W64), and I thought I would try to add the QGis python bindings to my existing install - here is how to do it!

Finding the latest climate change data
Finding the latest climate change data

I recently had a need for updated climate change maps for a client. The client specifically requested that the maps should contain data from the latest analys by the IPCC. After some searching I found the NOAA ESRL/PSD Climate Change Portal. This website provides averages of all models for the variables that I was interested in: temperature, precipitation and acidity in a format that was easy to bring into ArcGIS.

Color ideas for maps
February 17, 2014
Color ideas for maps

There was recently a great thread on the Society for Conservation GIS mailing list about picking colors, ramps and colorschemes for maps. Some of the obvious links were there, and a few new. I thought I would just make some notes as a summary...

Geoprocessing tool index window for ArcGIS 10.2
October 25, 2013
Geoprocessing tool index window for ArcGIS 10.2

One feature that I have missed in ArcGIS 10 and above is the index tab that was available as a dockable pane. Then I found this great add-in that has been a separate download for each version of ArcGIS - it wasn't available when I first started upgraded ArcGIS 10.2, but now it is here!

A heart map for Valentine's day
February 14, 2013
A heart map for Valentine's day

I prepared this cute heart-shaped World map for Valentine's Day, using the Bonne map projection, what do you think?

Bookmarklet for performing a google site search
October 12, 2012
Bookmarklet for performing a google site search

I do a lot research in my job, and sometimes I need to narrow down a search for a specific website. As a little exercise, I prepared this little javascript bookmarklet to perform a google search on the site that one is currently visiting.

Windpower in Sweden
October 2, 2012
Windpower in Sweden

I found some interesting data on windpower and energy production for Sweden, and prepared this simple chart, listing electrity generation per month, from 2002-2012.

js2shapefile
September 16, 2012
js2shapefile

I found this interesting library to export geospatial data from web applications running the ArcGIS Server JavaScript API - js2shapefile - which seems to work very well.

Arctic sea ice, august 2012
September 11, 2012
Arctic sea ice, august 2012

The extent of the sea ice in the Arctic reached a record low for the month of August this year (2012) - with the ice reaching 4.72 million square kilometers. I thought it would be fun to prepare a map over that using the latest available data.

Dietary trends - animated bubble chart (animal and vegetable food supply 1961-2007)
July 20, 2012
Dietary trends

Dietary trends on food supply of animal and vegetable products, by country, presented in a bubble chart. The animated time series shows the trends 1961-2007 using the motion chart gadget from Google, as used by Gapminder. The data was retrieved from FAOSTATS.