Plot order with two Y-axes?

Question

peaksix 2017-4-14

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/335430-plot-order-with-two-y-axes

评论： Arthur Vieira 2021-5-5

I am creating a plot with a line plot on the left y-axis and a bar plot on the right y-axis. I am doing this using:

line1 = plot(x,y);
yyaxis right
bar1 = bar(x,z);

This results in the bar plot on top of the line. So I tried:

uistack(bar1,'bottom')

Which gives me the error:

Children may only be set to a permutation of itself

The issue seems to be that they are not plotted on the same axis. Because if I omit the line "yyaxis right" (so that the line and bar plot both use the left y-axis, then uistack(bar1,'bottom') works correctly.

Is there any way to specify which y-axis is on top? I tried to accomplish this using the following code, which did not work:

yyaxis right
axes2 = gca;
uistack(axes2,'bottom');

This did not return an error, but it also did not work.

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Answer 1

Ankitha Kollegal Arjun 2017-4-18

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https://ww2.mathworks.cn/matlabcentral/answers/335430-plot-order-with-two-y-axes#answer_263395

在 MATLAB Online 中打开

The issue seems to be with the 'yyaxis' command.

A possible workaround for this is using 'plotyy' instead of 'yyaxis'. However, please note that 'plotyy' will be deprecated soon. For the time being, this workaround should suffice.

Here is a sample code:

x=1:10;
y=x.^2;
z=x;
p = plotyy(x,y,x,z,'plot','bar');
line1 = p(1);
bar1 = p(2);
uistack(bar1,'bottom')

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Adam Danz 2019-11-14

Just a few corrections to the demo.

p (the 1st output to plotyy) is the 2 axis handles. To get the line object handes, use the 2nd and 3rd outputs.
The demo is correct to change the stack of the axes but axis 2 (on top by default) is transparent while axis 1 has a white background by default. So, after the stack change, you will not see axis 2 unless you change the transparency of axis 1.

A demo of this is provided here:

https://www.mathworks.com/matlabcentral/answers/489486-link-axes-with-different-y-scales#answer_400340

Arthur Vieira 2021-5-5

+1 Indeed the right axis is usually of less importance and would sit better in the back. For now I will edit the *.svg later, before publishing the figures I'm producing.

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