need some advice on x y plot

[nephish at xit.net]

i have thought about doing this, just a little different. i was going
to list the value pairs.
take the start time and end time and plot 100 empty plots between them.
add the value pairs, sort by time, and then draw it. The only thing is
it get kinda complicated when the times change a lot. they could span
an hour, a month, anything in between.

i like your idea, i will check various packages for how to plot 'none'

thanks
sk.