How to draw a pie chart in a map?

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Zijia Zheng
Zijia Zheng 2020-1-10
评论： Hongyun 2024-7-28
Hello! I want to ask how to draw some pie charts in a map by using the m_map package? And move the pie charts to the corresponding latitude and longitude position? Thanks!

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Meg Noah
Meg Noah 2020-1-10
I downloaded the package and then modified the m_ellipse.m program in that package to create a new m_piechart.m that produces this map. The .m files are attached.
piechartOnMap.png
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Meg Noah
Meg Noah 2021-3-4
I haven't tried this but... in the test line
[h]=m_piechart(X,XColor,-75,50,10000,10000,0,2,[],'patch');
change the penultimate value of [] (default scale value is 1) to a value less than 1. Make it 1/2 or 1/10. Then if that works to reduce the size, take a guess-check-and-revise strategy to visually find the appealing size of the pie.
Arnaud KOUEKAM KENGAP
Arnaud KOUEKAM KENGAP 2021-3-7
Hello Meg Noah thank you very much for your help I have solved my problem now.

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