plot graph and bar on same figure with 2 x-asis and 2 y-axis with different scales

Question

Stefan Muller 2019-3-16

0
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https://ww2.mathworks.cn/matlabcentral/answers/450427-plot-graph-and-bar-on-same-figure-with-2-x-asis-and-2-y-axis-with-different-scales

评论： Stefan Muller 2019-3-16

I need to plot this 2 graphs in the same figure, one of them using bottom-x Vs. left-y, and the other using top-x Vs. right-y but I cant figure it out, nothing worked for me.

x1=[0.0153    0.2479    0.4366    0.6620    0.8544    0.9197    0.9625    0.9961    1.0000];
y1=[1000      900       800       700       600       500       400       300       200];
p1=plot(x1,y1);
x2=[1000      900       800       700       600       500       400       300       200];
y2=[0.0153    0.2326    0.1888    0.2253    0.1924    0.0653    0.0429    0.0336    0.0039];
b1=bar(x2,y2,1);

I tried yyaxis, plotyy, creating and modifying my own axis, etc...nothing worked.

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Answer 1

Kostas 2019-3-16

1
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编辑：Kostas 2019-3-16

在 MATLAB Online 中打开

You need to create a second axis to plot your line.

See this example

Try something like the following

% Create the data 
x1=[0.0153    0.2479    0.4366    0.6620    0.8544    0.9197    0.9625    0.9961    1.0000];
y1=[1000      900       800       700       600       500       400       300       200];
x2=[1000      900       800       700       600       500       400       300       200];
y2=[0.0153    0.2326    0.1888    0.2253    0.1924    0.0653    0.0429    0.0336    0.0039];
figure;
% make the bar plot
b1=bar(x2,y2,1);
ax1 = gca; % get current axes properties
ax1.XColor = 'b'; % change the X axis color to blue
ax1.YColor = 'b'; 
ax1_pos = ax1.Position; % position of first axes
% Create the second axis to plot the line
ax2 = axes('Position',ax1_pos,...
    'XAxisLocation','top',...
    'YAxisLocation','right',...
    'Color','none');
line(ax2,x1,y1,'Color','k')