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

DATA ART

There is a trend to make data journalism more easy. No spreadsheets or difficult statistics or coding, but immediately producing impressive visualizations. Read more: https://d3-media.blogspot.com/2018/07/new-steps-in-data-journalism.html  .
I believe we have arrived at the logical end of this development: turn your data in work of art. Give it a try at: https://morph.graphics/. 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. https://d3-media.blogspot.com/2018/07/take-back-control-over-internet.html 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: https://takeout.google.com/settings/takeout. 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 - https://locationhistoryvisualizer.com/heatmap/ , 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

PORTAINER

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 \
portainer/portainer
SHINY


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.