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

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

[Adam]

Plot them on different axes. The purpose of yyaxis is to plot things whose x values overlap so that the graphs can be compared. If you don't want them to overlap then you should just plot them in distinct axes.

[Adam Danz]

I addition to Adam's recommendation, why not just used grouped bars one one axis?

Here's a clever work-around using plotyy.

https://www.mathworks.com/matlabcentral/answers/164738-bar-plot-with-two-y-axes#answer_160635

[Ahmad Bilal]

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]

Can you please modify the code for me. thanks

Answer 1

[jonas]

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])

[Lars Abrahamsson]

box on

doesn't work anylonger though

[Adam Danz]

What does that mean? box on certainly still works (r2020a). 'box' isn't mentioned anywhere on this thread.