Data context: telling stories with numbers

Storytelling with numbers… sounds boring, right? But making an exciting and interesting graph can be the difference between getting funding or not. Anyone can make a graph, but one that is meaningful takes some training. In this post I will introduce you to some concepts that will get you...

Easy way to compare and see Dutch drought

Dutch drought? That doesn’t sound right… In all my travels, non-Dutch people have always been astonished that in the wet and rainy Netherlands we can have periods of drought. In 2018 we had a dry year with a deficit of almost 300 mm. But the last few days the...

Rshiny: it’s here, now it’s your turn to play with coffee

Rshiny is R without the difficult language After making the previous worldmap here and playing with ggplot2 here, it’s time for the third and last coffee post: using Rshiny. Here is what we are going to make: Below you can play with the app, and here is the app...

Ggplot2 for revealing useful coffee relations

Can ggplot2 show if coffee producers drink more coffee? After making this map of coffee producing countries with ggplot2 in R, and with the help of some comments, I wanted to figure out if coffee producing countries also consume more coffee. And what about the export of coffee? In...

Coffee map: making an awesome map in R

Ever thought about where your coffee is produced? I love to drink coffee. A lot. But I never actually thought of how much coffee each country produces each year, and where this is produced. First, I started by looking at my own coffee. Where was it produced? My coffee...

Rainwater harvesting (RWH): potential sites

In the first part of this RWH series I explained what kind of techniques there were for rainwater harvesting. In this second part I will show you a basic method using RSAGA to get a first idea of suitable locations. This is based solely on the digital elevation model,...

Rainwater harvesting (RWH): intro

This is the first subject I would like to continue working on now: rainwater harvesting, or RWH. An example of RWH is the mamateo from the pre-Incan people in the Andes. There are of course many different types of RWH, and literature has summed them up nicely for me....