Calculate and present release burndown chart delta between ideal and remaining graphs

[yaron]

Hello,

Does anyone has any idea\ way to calculate on a daily basis (or any other interval) the gap between the ideal burndown of a release Vs the actual (remining)?

I have a custom issue type representing the release.
I can calc the remaining story point per day.
I don't know how to extract the number per day of the ideal burndown line presented in the various release burndown charts.

any help\ idea will be appriciated.

BR,

Yaron