Adding a plot based on a calculated value within a strategy

[cgeorgan]

Hi-

Title says it all. I know how to add plots through the Initialize() function in a strategy, but how can I display a plot that displays a value calculated over time within a strategy, as its running?

For example, say I have all sorts of buy signals, and I'm constantly polling my buy signals to give me an overall value. I would like to plot the aggregate value of my buy signals over time, either as an overlay or as a separate window in the chart.