Categories
Pie Charts

Can Labels Save Pie Charts

I recently received this interesting question through the contact form. I always relish an opportunity to challenge my assumptions and opinions on pie charts – even though I appear to be a bit of a zealot. One day, I may even be convinced that I am wrong. Here’s the question: “It seems to me that […]

Categories
Pie Charts

Lloyds Show Off Leggera Charts

I haven’t mentioned pie charts for a while, but Lloyds Bank have plastered this advert everywhere with their CD-shaped pie chart (also known as Leggera Charts). It is worth pointing out how rubbish it is. Even if it wasn’t a true fact that pie charts are never the right chart to display your data, they […]

Categories
Pie Charts Programming

When to Avoid Using Percentages

Percentages can be absolutely brilliant. They can remove a ton of distractions and questions and give you a strong indication of some numbers. For example, it is handy to know that 30% of your visitors are browsing using Internet Explorer and 4% are using Opera. This is probably easier to grasp as a percentage rather […]

Categories
Pie Charts

Response to Pie Chart Comment

I received a message from Kester Takayama, which was a well written note in defence of the pie chart. Kester correctly notes that adding the third-place party to the first-place or second-place party doesn’t in itself create a government because they still may not have an overall majority. He also correctly pointed out that while […]

Categories
Pie Charts

The Pie Chart That is Wrong Several Times

Before we get started I just wanted to confirm that I do not go out in search of bad charts on The Web. In all the cases where I highlight the problems of a given chart, they have come to me as part of daily life. Because of this, they sometimes appear on a website […]

Categories
Pie Charts

Even Worse than a Pie Chart

How long has it been since I last spotted a rubbish pie chart. Okay, I admit it – it was last month. It is actually quite easy to spot them because actually all pie charts are awful. So why is this one so bad? Simple. A two-dimensional pie chart has been proven to be hard […]

Categories
Pie Charts

Column Charts Can Lie Too

My views on pie charts are well known, but that isn’t to say that all other charts are good. The problem with pie charts is that they make it hard to understand information, but with many other charts, the problem is how people use sneaky tricks to deceive you. Whether it is a strange use […]

Categories
Pie Charts

British Pie Week

From 5th to 11th March 2012, it’s British Pie Week. While I am a keen supporter of British Pies, especially the Apply Pie my Wife makes, this week serves as a timely reminder on how data is the worst ingredient for a pie. On the same day that British Pie Week launched, I happened upon […]

Categories
Pie Charts

Beach Ball Charts are Worse Than Pie Charts

It seems to me that the tide is now turning against the pie chart. Most of the discussions I discover these days are via track-backs to my website where someone has cited one of my opinion pieces in a discussion about how pie charts are pretty much always the wrong way to display your data. […]

Categories
Pie Charts

A Great Example of a Terrible Pie Chart

If you are going to use a pie chart (please don’t use a pie chart) then you need to know the rules of the pie chart. I actually don’t think anyone ever needs to use a pie chart, they are very nearly always the wrong chart for the data you want to display and despite […]