MATLAB: Bar plot with two Y-axes

bar plotplotyy

Hi all,
I need to plot data in a bar plot with two Y axis. Morevover the bar must be grouped, like in the following picture:
http://it.mathworks.com/help/releases/R2014b/examples/graphics/BarGraphof2DArrayExample_01.png
I have tried the following code but the result is far to be fine.
figure
a=rand(10,1)*100;
b=rand(10,1)*5;
[AX,H1,H2] =plotyy([1:10],a, [1:10]-0.5,b, 'bar', 'bar');
set(H1,'FaceColor','r')
the problems are:
  • Item one: There are two overlapped x-axis, but I need only one.
  • Item two: the bars are not each next to the other,
Thank you
best regards

Best Answer

Hi,
try this
figure
a=[rand(10,1)*100 zeros(10,1)  ];
b=[zeros(10,1)    rand(10,1)*5 ];
[AX,H1,H2] =plotyy([1:10],a, [1:10],b, 'bar', 'bar');
set(H1,'FaceColor','r') % a
set(H2,'FaceColor','b') % b
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