Tag: worst-practice

The worst way to visualize geographic data Country choropleth maps are the wrong chart for visit counts. Or for any kind of count. They encode magnitude as land area, but...

Anthropic has published an interesting study about labor market impacts of AI: Labor market impacts of AI: A new measure and early evidence. It is hard to overestimate Anthropic’s contribution...

An example of a very bad graph Nature Medicine is a peer-reviewed journal that belongs to the very prestigious Nature group. Today, I was reading a paper that included THIS...

I recently rediscovered a volcano plot – a scatter plot that aims to visualize changes in large populations. Volcano plots are very technical and specialized and, most probably, are not...

A fellow data analyst asked a question? What do we do when we need to draw a stacked bar chart that has too many colors? How do we select the...

A radar chart (sometimes called “spider charts”) look cool but are, in fact, pretty lame. So much so that when the data visualization author Stephen Few mentioned them in his...

I apologize for my harsh language, but recently I was exposed to a bunch of graphs on the “information is beautiful” site, and I was offended (well, ot really, but...

It’s fun to look at the visit statistics and to discover old stories. I wrote this post in 2016. For a reason I don’t know, this post has been one...

Network visualization can mesmerize and hypnotize. Chord diagrams are especially cool because they are so colorful and smooth. The problem is that sometimes, the result doesn’t provide any actual value,...

Being a data scientist and a self-proclaimed data visualization expert, I like using log scale graphs when I find them appropriate. However, as a speaker and a communicator, I refrain...

Would you buy a grammar book with a clear spelling mistake on its cover? I hope not. That’s what happened to IBM when it published it’s new data visualization guide....

This is another post in the series Because You Can. This time, I will claim that the fact that you can put error bars on a bar chart doesn’t mean...

That fact that you can doesn’t mean that you should! I will say it once again.That fact that you can doesn’t mean that you should! Look at this slopegraph that...

Exposé, an Australian-based data analytics company, published a use case in which they analyze the benefits of a custom-made machine learning solution. The only piece of data in their report...

What do you do when you have spare time? I tend to throw graphs from ads to a graph digitizer to compute the “lie factor”. Take the following graph for...

Recently, I stumbled upon a report called “Understanding Today’s Chief Data Scientist” published by an HR company called Heidrick & Struggles. This document tries to draw a profile of the...

I went through my Machine Learning tag feed. Suddenly, I stumbled upon a pie chart that looked so terrible, I was sure the post would be about bad practices in...