Hi,
I have the following problem that I can't resolve. I want to create a stacked bar chart for a bug tracker system that shows how many features are closed every day. Every stacked column should contain for example 3 stacked features (if 3 features are closed this day) and the height of each feature is the time that it takes to implement it.
Here is the example:

22.03.2011 -> 4 issues (1st - 2h, 2nd - 4h, 3th - 5h, 4th - 6h)
23.03.2011 -> 2 issues closed (1st - 3h, 2nd - 30h)
24.03.2011 -> 3 issues closed (1st - 5h, 2nd - 25h, 3th - 1h)
ets...

so on the Axis X I have the dates: 22, 23 and 24. March 2011
and on Axis Y I have values: 26h (5 points in 1 color, 25 in other and 1 in third); 33h and 17 h as values.
Every issues must have different color in it's stacked bar. The number of closed issues per day is generated dynamically so I don't know how many series I will need for each bar.

Can you give me advice how to create such stacked bar and is it possible to create it.

Hello Liliah,

The example attached shows how to create Series run-time using the MVVM pattern. The Chart is created using SeriesMappings which are added in the ViewModel on CollectionChanged where the collection is ObservableCollection.
Additionally you may take a look at this forum post that describes (together with source code) how you can create Stacked Bar with SeriesMapping for each Bar Serie.

All the best,
Evgenia
the Telerik team

Hello Evgenia,

Yet, I didn't understand whether I can do this (see attachment).
Thank you for your consideration.

Lily

Thank you for your reply. 
I managed to create different count of series (which was my main issue) by setting the corresponding value in the datasource to be null.
I'm a beginner with this kind of technology so I apologize if I ask something stupid :)

Hi Lilia,

I am glad that the issue you were facing is now resolved. Please do not hesitate to contact us if you have any additional questions.

All the best,
Evgenia
the Telerik team