Stacked bar chart from one column data

[Cylia Bouzid]

Hello all,

I'm tring to make stacked bar charts from one column data using dc.js. Each stacked bar chart should represent the sum of elments (elm1,elm2..)

ex:
        
col1   |col2   |
-------  |---------|
elm1  |elm1  |
elm2  |elm2  |
elm1  |elm3  |
elm3  |elm3  |
elm2  |elm2  |
elm1  |elm3  |

Do you have any idea on how to do this? Do you have any examples?

Thank you!

Cylia