MATLAB: Bar plot problem with legend

bar plot

If I have
    A1 =
      1.0e-013 *
      Columns 1 through 8
        0.1481    0.1574    0.1465    0.1481    0.1574    0.1465    0.1481    0.1574
      Column 9
        0.1465
And
A2 =
    1.0e-013 *
    Columns 1 through 8
      0.1250    0.1523    0.1465    0.1250    0.1523    0.1465    0.1250    0.1523
    Column 9
      0.1465
How can I plot either variables, on the same bar plot?
bar([A1 A2])
legend('A1,'A2')
If MATLAB said:
Warning: Ignoring extra legend entries. 
> In legend at 278
What's the mistake?

Best Answer

A1 =1.0e-013 *[ 0.1481    0.1574    0.1465    0.1481    0.1574    0.1465    0.1481    0.1574]
A2= 1.0e-013 *[0.1250    0.1523    0.1465    0.1250    0.1523    0.1465    0.1250    0.1523]
bar([A1' A2'])
legend('A1','A2')
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