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I want to create a pie chart for four items, the arc of the slices would be equal, each 90 degrees, however the areas would be different since I will shrink or enlarge the slice depending on the data. Here is an that is close to what I want:

[example](http://www.excelcharts.com/blog/creative-pie-charts-better-infographics/#!wp-prettyPhoto[3934]/0/)

Basically it would look like a circular bar graph that is filled in the center. What do you call this type of chart and how would I create it.

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    $\begingroup$ It looks like polar area diagram (or rose diagram in geology) $\endgroup$
    – nadya
    Apr 9, 2013 at 3:37
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    $\begingroup$ Like a coxcomb chart... $\endgroup$
    – Glen_b
    Apr 9, 2013 at 3:40
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    $\begingroup$ How you would create it is probably more of a Stack Overflow question, but at a minimum, we would need to know what software you would use. $\endgroup$ Apr 9, 2013 at 3:41
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    $\begingroup$ To quote Tukey "There is no data that can be displayed in a pie chart that cannot be displayed better in some other chart". You can probably create your chart, but you shouldn't; it is worse than a regular pie chart, and that's saying something. $\endgroup$
    – Peter Flom
    Apr 9, 2013 at 9:55
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    $\begingroup$ @RobertJones, I have a map with different countries and I want some to visualize the number of articles published for each country by four different newspapers. Any suggestions? I only could think of a pie chart. $\endgroup$ Apr 9, 2013 at 13:15

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It looks like as a polar area diagram or rose diagram (in geology).

To create it, in general, you need to create several circles with radii proportional to your data categories, then just cut slices.

I've plotted these diagrams using Matlab function rose http://www.mathworks.com/help/matlab/ref/rose.html

Or try this free program http://www.rgraph.net/examples/rose.html

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