Need your opinion on the best way to plot LIVE data to a line chart

I'm looking for best way to plot a line chart from constantly updating information (via a timer)

I want to be able to :
- view the last 5 minutes of the data, or 'zoom out' and see all of it

- have the line chart automatically resize when the window is made bigger

- be able to save screen shots of the charts

- be able to plot multiple lines on the chart

I could make this from scratch, but I have a feeling that the re-draw time every time it refreshed would slow everything down, plus have a distracting flash effect.

Please let me know if you know of a better way to do this other then the basic PSET & LINE functions.

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