How to subplot graphs with more than 4 y-axis in a figure?

Question

LIU 2014-1-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/112583-how-to-subplot-graphs-with-more-than-4-y-axis-in-a-figure

评论： LIU 2022-3-20

Hi everyone,

I want to plot 2 graphs in a figure, and each graph contains 4 lines such that 4 y-axis is needed. Thanks to ploty4.m (developed by Peter Bodin available on the FILEEXCHANGE), the multi-axis problem is well done. But the new problem is that each graph just pops up as individual figure instead of being in a figure. I have attached the code and the result.I don't know how to deal with it or how it comes into being.

Could anybody please kindly give me one hand? Thank you in advance.

Best,

LIU

The ploty4.m is as follows:

function [ax,hlines] = plotyyyy(x1,y1,x2,y2,x3,y3,x4,y4,ylabels)
%PLOTY4 Extends plotyy to include a third and fourth y-axis
%
% Syntax: [ax,hlines] = ploty4(x1,y1,x2,y2,x3,y3,x4,y4,ylabels)
%
% Inputs: x1,y1 are the xdata and ydata for the first axes' line
% x2,y2 are the xdata and ydata for the second axes' line
% x3,y3 are the xdata and ydata for the third axes' line
% x4,y4 are the xdata and ydata for the fourth axes' line
% ylabels is a 4x1 cell array containing the ylabel strings (optional)
%
% Outputs: ax - 4x1 double array containing the axes' handles
% hlines - 4x1 double array containing the lines' handles
%
% Example:
% x = 0:10;
% y1=x; y2=x.^2; y3=x.^3; y4=x.^4;
% ylabels{1} = 'First y-label';
% ylabels{2} = 'Second y-label';
% ylabels{3} = 'Third y-label';
% ylabels{4} = 'Fourth y-label';
% [ax,hlines] = ploty4(x,y1,x,y2,x,y3,x,y4,ylabels);
% leghandle = legend(hlines, 'y = x','y = x^2','y = x^3','y = x^4',2);
%
% See also Plot, Plotyy
% Denis Gilbert, Ph.D.
% Check inputs
msg=nargchk(8,9,nargin);
error(msg);
% Create figure window
figure('units','normalized',...
'DefaultAxesXMinorTick','on','DefaultAxesYminorTick','on');
%Plot the first two lines with plotyy
[ax,hlines(1),hlines(2)] = plotyy(x1,y1,x2,y2);
cfig = get(gcf,'color');
pos = [0.1 0.1 0.65 0.8];
offset = pos(3)/24;
%Reduce width of the two axes generated by plotyy
pos(1) = pos(1) + offset;
pos(3) = pos(3) - offset;
set(ax,'position',pos);
%Determine the position of the third/fourth axes
pos3 = [pos(1) pos(2) pos(3)+offset pos(4)];
pos4 = [pos(1) - offset pos(2) pos(3)+offset pos(4)];
%Determine the proper x-limits for the third and fourth axes
scale3 = pos3(3)/pos(3);
scale4 = pos4(3)/pos(3);
limx1 = get(ax(1),'xlim');
limx3 = [limx1(1) limx1(1)+scale3*(limx1(2)-limx1(1))];
limx4 = [limx1(2)-scale4*(limx1(2)-limx1(1)) limx1(2)];
%Create ax(3) & ax(4)
ax(3) = axes('Position',pos3,'box','off',...
'Color','none','XColor',cfig,'YColor','r',...
'xtick',[],'xlim',limx3,'yaxislocation','right');
ax(4) = axes('Position',pos4,'box','off',...
'Color','none','XColor',cfig,'YColor','k',...
'xtick',[],'xlim',limx4,'yaxislocation','left');
%Plot x3,y3,x4,y4
hlines(3) = line(x3,y3,'Color','r','LineStyle','--','Parent',ax(3));
hlines(4) = line(x4,y4,'Color','k','LineStyle','-.','Parent',ax(4));
%Put ax(2) on top;
axes(ax(2));
%Set y-labels;
if nargin==9
set(cell2mat(get(ax,{'ylabel'})),{'String'},{ylabels{:}}');
end
*THen run directly the following code in the command window of Matlab:*
    figure 
    subplot(2,1,1) 
    x = 0:10;
    y1=x; y2=x.^2; y3=x.^3; y4=x.^4;
    [ax,hlines] = plotyyyy(x,y1,x,y2,x,y3,x,y4);
    subplot(2,1,2) 
    x = 0:10;
    y1=x; y2=x.^2; y3=x.^3; y4=x.^4;
    [ax,hlines] = plotyyyy(x,y1,x,y2,x,y3,x,y4);

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Answer 1

Amit 2014-1-19

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/112583-how-to-subplot-graphs-with-more-than-4-y-axis-in-a-figure#answer_121365

编辑：Amit 2014-1-19

在 MATLAB Online 中打开

plotyyyy.m

Use the ploty4 version attached. I have modified it to do what you want. You can use it like this:

h1 = subplot(2,1,1);
x = 0:10;
y1=x; y2=x.^2; y3=x.^3; y4=x.^4;
[ax,hlines] = plotyyyy(h1,x,y1,x,y2,x,y3,x,y4);
h2 = subplot(2,1,2);
x = 0:10;
y1=x; y2=x.^2; y3=x.^3; y4=x.^4;
[ax,hlines] = plotyyyy(h2,x,y1,x,y2,x,y3,x,y4);

my output:

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LIU 2014-1-20

Thank you very much, Amit.The revised plotyyyy.m by you did help me a lot.Many thanks again.

Best regards,

Liu

LIU 2022-3-20

Amit,thank you very much for your help eight years ago. I am confused with another similar problem again. I need to subplot graphs with more than 7 y-axis in a figure now, i.e., 7 lines in a figure. Is it possible to amend the plotyyyy code to achieve this? If possible, can you give me some hint of how to do it ? Many thanks in advance.

Best regards,

Liu

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