Hi R Folks,

I need to plot a stacked bar plot with row labels as A,B,C,... and each bar
divided by x,y,.... Here is the data:

  x y
A 1 .5
B -.2 .6
C .3 -.7
D .4 .8
(for e.g. x,y,... could be air pollutants and A,B,C,... could be months)

Issue 1) It has negative values.
Issue 2) It contain two categorical variables.

Can anyone help me?

Thanks,
Gary

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