How to merge multiple plots into one?

Question

Wiqas Ahmad 2021-1-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/730443-how-to-merge-multiple-plots-into-one

评论： Star Strider 2021-1-31

I have obtained 17 figures from the program below but each figure is displayed seperately. I want to merge them all and plot them as only one figure.

EC = [0.0052 0.0078 0.0104 0.013 0.0156 0.0182];
Reff = 4:1:20;
h=2115:9:2394;
for j = 1:length(Reff)
    figure,
    hold on
    for i = 1:length(EC)
        filename1 = [num2str(EC(i)),'\',num2str(Reff(j)),'um\out_resultsG_I0.dat'];
        I1 = getsignal(filename1);
        I1(isnan(I1))=0;
        I0_1 = sum(I1,2);
        filename1 = [num2str(EC(i)),'\',num2str(Reff(j)),'um\out_resultsG_Q0.dat'];
        Q1 = getsignal(filename1);
        Q1(isnan(Q1))=0;
        Q0_1 = sum(Q1,2);
        dep=(I0_1-Q0_1)./(I0_1+Q0_1);
        plot(dep,h,'LineWidth',2);
        title(['Effective radius=',num2str(Reff(j)),'\mum',', FOV=2mrad'],'FontSize',12,'FontWeight','normal'); 
        xlabel('Depolarisation ratio \delta_{out}','FontSize',12,'FontWeight','normal');
        ylabel('Cloud depth (m)','FontSize',12,'FontWeight','normal');
        
    end
    legend(['EC=',num2str(EC(1)),'/m'],['EC=',num2str(EC(2)),'/m'],['EC=',num2str(EC(3)),'/m'],...
        ['EC=',num2str(EC(4)),'/m'],['EC=',num2str(EC(5)),'/m'],['EC=',num2str(EC(6)),'/m'],'location','Southeast')
   
end

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Rik 2021-1-29

You're the one who put figure inside the for-loop. You only need to modify what you put in your legend, but otherwise removing that call should be your solution. Or do you want something different?

Wiqas Ahmad 2021-1-29

Simply say that I have plotted the six curves in the front figure 17 times, but each time they are displayed on a seperate figure. I wan to plot all these curves17times on a single figure.

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Answer 1

Star Strider 2021-1-29

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/730443-how-to-merge-multiple-plots-into-one#answer_609553

在 MATLAB Online 中打开

‘I wan to plot all these curves17times on a single figure.’

Put the figure call before the loops:

figure
hold on
for j = 1:length(Reff)
    for i = 1:length(EC)
  ... etc. ...

and:

hold off

after the loops, so you do not plot anything else to those axes later in your code.

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Star Strider 2021-1-30

在 MATLAB Online 中打开

Small problem:

Unrecognized function or variable 'getsignal'.
        I1 = getsignal(filename1);

so I defer to you to experiment with this.

Try this:

EC = [0.0052 0.0078 0.0104 0.013 0.0156 0.0182];
Reff = 4:1:20;
h=2115:9:2394;
for j = 1:length(Reff)
    for i = 1:length(EC)
        filename1 = [num2str(EC(i)),'\',num2str(Reff(j)),'um\out_resultsG_I0.dat'];
        I1 = getsignal(filename1);
        I1(isnan(I1))=0;
        I0_1 = sum(I1,2);
        filename1 = [num2str(EC(i)),'\',num2str(Reff(j)),'um\out_resultsG_Q0.dat'];
        Q1 = getsignal(filename1);
        Q1(isnan(Q1))=0;
        Q0_1 = sum(Q1,2);
        dep(i,j)=(I0_1-Q0_1)./(I0_1+Q0_1);
    end
end
figure
plot(dep,h,'LineWidth',2);
title(['Effective radius=',num2str(Reff(j)),'\mum',', FOV=2mrad'],'FontSize',12,'FontWeight','normal');
xlabel('Depolarisation ratio \delta_{out}','FontSize',12,'FontWeight','normal');
ylabel('Cloud depth (m)','FontSize',12,'FontWeight','normal');
legend(['EC=',num2str(EC(1)),'/m'],['EC=',num2str(EC(2)),'/m'],['EC=',num2str(EC(3)),'/m'],...
        ['EC=',num2str(EC(4)),'/m'],['EC=',num2str(EC(5)),'/m'],['EC=',num2str(EC(6)),'/m'],'location','Southeast')

It may be necessary to reverse the ‘(i,j)’ reference, however if you want to plot it against ‘h’ that should not be a problem with the plot. It would only be a problem if the components of ‘dep’ require that those indices be reversed.

.

Wiqas Ahmad 2021-1-31

Thank you. This is what I was required

Star Strider 2021-1-31

As always, my pleasure!

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