How to create a stacked bar plot with error bars?

Hello,

I have a set of data split into two uneven categories. Each category contains measurements for three variables: total, organic and inorganic.

I would like to create a stacked bar plot (with a single bar on the xaxis for each category). Within each bar, I would like to plot the organic and inorganic values as stacked. If possible, I would also like to have an error bar appear at the top of each bar displaying +/- 1 standard deviation for the averaged total.

I tried by starting to plot one of the values in a bar graph, and received an error that xdata cannot contain duplicate values:

x = B(1:59,3) %Where B is the predefined excel file; B(1:36,3) = 1 and B(37:59,3) = 2
T = B(1:59,9) %Total values
O = B(1:59,10) %Organic values
I = B(1:59,8) %Inorganic values
for x = B(1:36,3)
    y = (1:36,10) %Organic values
    figure(1)
    bar(x,y1)
end

Any suggestions or insight are welcome; this is my first time attempting a simple bar plot.

Cheers

[Star Strider]

Please provide an illustration of the sort of plot you want as the result.

The reason for asking is that standard error (or confidence interval) bars on a stacked bar plot would be difficult for someone looking at the plot to interpret. A reviewer/referree (and I have been one) might not accept a paper with confusing graphics.