How to create two "axes" plots in the same GUI?

Question

Abhay Aradhya 2017-6-8

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/343857-how-to-create-two-axes-plots-in-the-same-gui

评论： Adam 2017-6-9

    customUserInterface = figure('Name','Solution selector window');
    ax = axes('Parent',customUserInterface,'Position',[.1 .5 .375 .4]);
    subplot(ceil(sqrt(size(sectors_all,1))),ceil(sqrt(size(sectors_all,1))),p, 'Position',[.1 .5 .375 .4]);
    hold on
    for m=1:numOfAP
       plot3(ax,Data(m).traj(:,1),Data(m).traj(:,2),Data(m).traj(:,3),'g','LineWidth',2)
       hold on
       grid on
    end
    hold on
    ab = axes('Parent',customUserInterface,'Position',[.525 .5 .375 .4]);
    subplot(ceil(sqrt(size(sectors_all,1))),ceil(sqrt(size(sectors_all,1))),p, 'Position',[.525 .5 .375 .4]);
    hold on
    for m=1:numOfAP
       plot3(ab,Data(m).traj(:,1),Data(m).traj(:,2),Data(m).traj(:,3),'g','LineWidth',2)
       hold on
       grid on
     end
     hold on

In this case it only plots the 2nd axes..!!

Please suggest me a better way to do this. Thanks in advance

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Answer 1

Adam 2017-6-8

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/343857-how-to-create-two-axes-plots-in-the-same-gui#answer_270006

在 MATLAB Online 中打开

You haven't shown any plotting code so I can only guess at what you are doing which is a bit silly if you are trying to get an answer to a question! I suspect you are just doing what too many people do and something to the effect of just

plot( xData, yData );

If you look at the documentation:

doc plot

you will see

plot(ax,___)

as an option. This syntax works exactly as your (presumed) current syntax, but you give it the axes handle onto which to plot as the first argument. This is far better than just relying on whatever the current axes happens to be which is what the first syntax does.

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Abhay Aradhya 2017-6-9

编辑：Abhay Aradhya 2017-6-9

在 MATLAB Online 中打开

Sorry my bad, the below is the exact code

    customUserInterface = figure('Name','Solution selector window');
    ax = axes('Parent',customUserInterface,'Position',[.1 .5 .375 .4]);
    subplot(ceil(sqrt(size(sectors_all,1))),ceil(sqrt(size(sectors_all,1))),p, 'Position',[.1 .5 .375 .4]);
    hold on
    for m=1:numOfAP
       plot3(ax,Data(m).traj(:,1),Data(m).traj(:,2),Data(m).traj(:,3),'g','LineWidth',2)
       hold on
       grid on
    end
    hold on
    ab = axes('Parent',customUserInterface,'Position',[.525 .5 .375 .4]);
    subplot(ceil(sqrt(size(sectors_all,1))),ceil(sqrt(size(sectors_all,1))),p, 'Position',[.525 .5 .375 .4]);
    hold on
    for m=1:numOfAP
       plot3(ab,Data(m).traj(:,1),Data(m).traj(:,2),Data(m).traj(:,3),'g','LineWidth',2)
       hold on
       grid on
     end
     hold on

I tried your suggestion as indicated in the code above but Matlab throws a "Invalid handle." error on the line marked by Plot3..!!

Is there a different syntax for "Plot3"?

Adam 2017-6-9

在 MATLAB Online 中打开

What is that subplot call supposed to be doing? subplot creates axes, but you are creating your own axes so why use subplot after that? Either use subplot or create your own axes.

Again though with subplot, it returns a handle to the axes it creates. Store this and use it, in plot instructions and in hold, grid and any other instructions that you expect to be applied to a single axes.

You have six

hold on

instructions in that code, and that isn't counting the number of times the instructions inside the for loop get called. Just set

hold( ax, 'on' )

once. Throwing in more and more 'hold on' instructions and leaving them all in when they don't work just leads to overly messy code.

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