rose diagram

Question

Nicolas 2012-2-13

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https://ww2.mathworks.cn/matlabcentral/answers/28856-rose-diagram

编辑： Cedric 2013-10-10

Hi,

I'm plotting rose diagrams using the function rose. I would like to have the outer circle of my rose diagram to be representative of the maximum value of the histogram.

However I found in the 'polar' function, those lines:

 cax = newplot(cax);
 next = lower(get(cax, 'NextPlot'));
 hold_state = ishold(cax);

The maximum value is defined my 'maxrho' in the polar function, however the limits of my rose diagram are calculated using:

        set(cax, 'DataAspectRatio', [1, 1, 1], 'PlotBoxAspectRatioMode', 'auto');
        v = [get(cax, 'XLim') get(cax, 'YLim')];

The results is sometimes the limits (X and Y) equal the maximum value 'maxrho', but sometimes not.

I don't understand why it is not always selecting for the maximum value? Anyone could help me to change to fix it to maximum value?

Thank you very much

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Answer 1

C.J. Harris 2012-2-13

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https://ww2.mathworks.cn/matlabcentral/answers/28856-rose-diagram#answer_37243

The workaround I use to get the correct limits set on a polar plot is to simply draw a circle at your desired maximum, and set to the plot colour to match your background. Obviously not the nicest solution, but should work if I understand your problem correctly.