Here are three questions you often hear from your boss:
- What changes are happening in our business and how do they look?
- Do you know how to operate this new coffee machine?
- Why does every list has 3 items?
Jokes aside, our urge to find change in environment predates cave drawing, slice bread and Tommy Lee Jones. So, today let’s examine a very effective chart that tells the story of change and re-create it in Excel.
How fast America changes its mind – Example chart
Here is a recent chart from Bloomberg, depicting how America has changed its mind about various social & political issues between 1787 & 2015. (Read the full article on Bloomberg)
Applying these concepts to sample business data
Of course, our business data won’t span two and half centuries. So let’s look at something more realistic, like market share changes for 7 product categories over the last 15 years.
Here is a chart we will create in Excel.
Narrating change over time story with Excel charts – Video tutorial
If you like the above chart, watch below video to learn how to create it. As the process is somewhat elaborate, I made a video explaining various steps and techniques. Watch it below (or click here to see it on our YouTube channel)
Download the Change over Time Excel Chart:
Please click here to download the workbook for this chart (Excel 2013 Version).
Please click here to download the workbook for this chart (Excel 2007/10 Version).
Examine the chart, formulas & formats to learn more.
How do you tell the story of change?
My favourite methods for narrating the story of change are,
- Waterfall charts
- Scatter plots – case study
- Conditional formatting – usage in Dashboards
- Animated charts – Hurricane Sandy trajectory
- Interactive charts – Grammy bump chart
What about you? What charts & techniques do you use to narrate the story of change using Excel? Please share your thoughts and ideas in the comments area.
14 Responses to “Group Smaller Slices in Pie Charts to Improve Readability”
I think the virtue of pie charts is precisely that they are difficult to decode. In many contexts, you have to release information but you don't want the relationship between values to jump at your reader. That's when pie charts are most useful.
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Chandoo,
millions of ants cannot be mistaken.....There should be a reason why everybody continues using Pie charts, despite what gurus like you or Jon and others say.
one reason could be because we are just used to, so that's what we need to change, the "comfort zone"...
i absolutely agree, since I've been "converted", I just find out that bar charts are clearer, and nicer to the view...
Regards,
Martin
[...] says we can Group Smaller Slices in Pie Charts to Improve Readability. Such a pie has too many labels to fit into a tight space, so you need ro move the labels around [...]
Chandoo -
You ask "Can I use an alternative to pie chart?"
I answer in You Say “Pie”, I Say “Bar”.
This visualization was created because it was easy to print before computers. In this day and age, it should not exist.
I think the 100% Bar Chart is just as useless/unreadable as Pies - we should rename them something like Mama's Strudel Charts - how big a slice would you like, Dear?
My money's with Jon on this topic.
The primary function of any pie chart with more than 2 or 3 data points is to obfuscate. But maybe that is the main purpose, as @Jerome suggests...
@Jerome.. Good point. Also sometimes, there is just no relationship at all.
@Martin... Organized religion is finding it tough to get converts even after 2000+ years of struggle. Jon, Stephen, countless others (and me) are a small army, it would take atleast 5000 more years before pie charts vanish... patience and good to have you here 🙂
@Jon .. very well done sir, very well done.
good points every one...
I've got to throw my vote into Jon's camp (which is also Stephen Few's camp) -- bars just tend to work better. One observation about when we say "what people are used to." There are two distinct groups here (depending on the situation, a person can fall in either one): the person who *creates* the chart and the person who *consumes* the chart. Granted, the consumers are "used to" pie charts. But, it's not like a bar chart is something they would struggle to understand or that would require explanation (like sparklines and bullet graphs). Chart consumers are "used to" consuming whatever is put in front of them. Chart creators, on the other hand, may be "used to" creating pie charts, but that isn't an excuse for them to continue to do so -- many people are used to driving without a seatbelt, leaving lights on in their house needlessly, and forwarding not-all-that-funny anecdotes via email. That doesn't mean the practice shouldn't be discouraged!
[...] example that Chandoo used recently is counting uses of words. Clearly, there are other meanings of “bar” (take bar mitzvah or bar none, for [...]
[…] Grouping smaller slices in pie chart […]
Good article. Is it possible to do that with line charts?
Hi,
Is this available in excel 2013?