There's nothing that I'm aware of that will do this for you, and the shift
register method you don't seem to like is trivial. Certainly compared with
writing an ActiveX control that internally will be doing the same thing in
any case.
Just have an array 100 elements long that cycles via your shift register,
rotate it one element on each iteration and replace the last element (which
will be the first, having wrapped around from the beginning) with your new
datapoint, and massage the resulting 100 point buffer into your plot.
Thijs Boeree wrote in message
news:3A06AC07.9B445D42@amc.uva.nl...
> Hi,
>
> I want to display two signals in an XY graph (contineously) But i don't
> want a single dot, i want a trail of at least 100 points (that keeps
>
coming and going), i'm aquiring data with a sample rate of 500 Hz and
> don't want to put 100 elements of my shift register in the while loop to
> obtain al the (before) aquired data points. Is there any other
> possibility to do this?
>
> Thijs
>