Problem in Plotting bar graph with two y axis (Bars overlapping)

Question

Ahmad Bilal 2018-9-26

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/420864-problem-in-plotting-bar-graph-with-two-y-axis-bars-overlapping

评论： Adam Danz 2020-5-19

Hi, I have the following code:

    clc;
    close all;
    clear all;
    sheet ='Src_1MIC_Array1';
    dataset = xlsread('AllSource_MicArr1.xlsx',sheet,'A4:T51');
    ratio_tau_diff = dataset(:,15);
    abs_tau_diff = dataset(:,18);
    yyaxis left
    bar(ratio_tau_diff,'r')
    ylabel('Values of ratio tau diff');
    yyaxis right
    bar(abs_tau_diff,'b')
    xlabel('Mic Array 1 pair combinations')
    ylabel('Values of abs tau diff');
    title('Relative  and Absolute differences for Time delays (Tau) (1st Mic Array)');
    end

The problem is i am getting overlapping bar graphs. how can I make suitable changes in a code so that they do not come overlap but separately. Thanks

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Ahmad Bilal 2018-9-26

在 MATLAB Online 中打开

I have tried this one but it is showing again not the required result.

    yyaxis left
      bar(ratio_tau_diff,'r')
      ylabel('Values of ratio tau diff');
      yyaxis right
     bar(abs_tau_diff,'b')
      ylim([-0.9 2]);
      xlabel('Mic Array 1 pair combinations')
     ylabel('Values of abs tau diff');
      title('Relative  and Absolute differences for Time delays (Tau) (1st Mic Array)');
Can you hep me in this regard??

Ahmad Bilal 2018-9-26

Can you please modify the code for me. thanks

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Answer 1

jonas 2018-9-27

2
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/420864-problem-in-plotting-bar-graph-with-two-y-axis-bars-overlapping#answer_338655

在 MATLAB Online 中打开

The key here is to plot the two sets of bars as grouped. However, since they are on different axes you cannot plot the two data sets at the same time and thus cannot utilize the standard grouping option. Instead, you create fake groups by padding each vector with NaN's.

% Some data to play with
y1=rand(1,5).*10; %row vector with first set of data
y2=rand(1,5); %row vector with second set of data
% Create two axes
ax1=axes;
ax2=axes('xcolor','none','yaxislocation','right','color','none');
linkaxes([ax1 ax2],'x')
% Pad data with nans
y1=[y1;nan(1,numel(y1))];
y2=[nan(1,numel(y2));y2];
% plot data
axes(ax1);hold on
bar(y1')
axes(ax2);hold on
bar(y2','facecolor',[1 0 0])
xlim([0 length(y2)+1])