Pie chart percentages are not correct

Question

kcl128 2016-7-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/293411-pie-chart-percentages-are-not-correct

评论： kcl128 2016-7-2

Matlab pie query.pdf

I am plotting two variables (c and e) into a pie chart. The calculated percentage is 73% but the chart shows 42%. The percentages appear correct for lower values. I attach the code, the variables, the percentage calculation and the pie chart. I have cleared the variables before running the code.

Any advice most welcome.

Thank you.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Azzi Abdelmalek 2016-7-1

Post your code as a text.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Chad Greene 2016-7-1

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/293411-pie-chart-percentages-are-not-correct#answer_227410

在 MATLAB Online 中打开

If

z = [20318 28008]

then the first value, 20318 represents 42% of the total value of z.

100*20318/sum(z) 
= 42%

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

kcl128 2016-7-2

Thank you for your response Chad. The total sample is 28008 and of that total sample 20318 are outside the prescribed criterion, so what I was looking for in the pie chart is what percentage 20318 is of 28008 i.e. 73%. It seems that I have misunderstood the pie function. I will need to re-jig the two values in z to give me the correct answer. Again, thanks for the comment.

请先登录，再进行评论。