donderdag 8 november 2018

Sovereign Debt Southern Africa

woensdag 7 november 2018

Big Mac Interactive

Big Mac Index for Southern African countries-STATIC

dinsdag 25 september 2018


There is a trend to make data journalism more easy. No spreadsheets or difficult statistics or coding, but immediately producing impressive visualizations. Read more:  .
I believe we have arrived at the logical end of this development: turn your data in work of art. Give it a try at: Difficult? No of course not but  the intro by Alberto Cairo is very nice. Here is an example of my art work, using data about life expectancy and GDP per capita from Sub-Sahara countries. Impressive. Nice start for a powerpoint ppt, but don't  ask what it means.

maandag 17 september 2018

Google Data: Traveling back in Time

Discussing how to control the Internet and the big data companies like Google, Amazon and Facebook is import. However finding out what these companies know about you is an other question. This is about YOUR data and thus on a personal level. I found out that it is pretty scary how much Google for examples knows about the details of my whereabouts.
First I downloaded my Google data using Take Out: Unzipped the file was 363 GB. To show the amount of detail and to produce an interesting visualization I took out the location history file, 273 MB. The file is in JSON. There is in interesting site that visualize your location history in a heat map - , and by zooming in you get much details.
Last year I worked for a month at Cape Town, the three pictures below zoom in step by step, and in the end I can find the restaurant at Bree Straat where I had lunch last year. This time traveling.
NOW it is time to scrutinize all my data at Google and Facebook!

dinsdag 21 augustus 2018


Some time ago I installed Docker to explore Blockstack. I am working now with Docker for a while using the command prompt. Starting and stopping containers, pull and image of removing them is a lot of typing. And I make mistakes in the commands, forgetting a flag or the specification for the volume. I tried to find a GUI for docker: just creating containers with a click. Reading reviews from the web I tried Portainer. Portainer runs in a docker container and can be quickly installed:
docker run -d -p 9000:9000 \
-v /var/run/docker.sock:/var/run/docker.sock \

The interest  for Docker has been rising the past year, according to Google trends. That is not surprising because Docker has a lot of advantages compared to virtualization, using for example an Oracle Virtual Box. Docker uses only a part of the kernel; the software runs an a separate container. It is an ideal solution for developers testing software or user for trying experimenting.
When I work with R, making graphs and visualizations is important for data journalism applications.
The Shiny server of R is one of the most advanced possibilities. Running in a Docker container  you deploy the server in a minute can experiment as much as you like, without the change of wrecking your OS.