How to connect with waveform graph?

hi
  i would like to know how to simulate wave form graph the input is randon number ?My problem is i cannot connect with wave form graph...
can u show me example..like using arrary...or something else..i looking forward ur reply
thank u

I have an example that you may want to look at here.
The example was for a signal generator, but there is a waveform graph to show the selected waveform.  It is an extremely basic program, but might be a good start.
RayR

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    > scope. The application does some analysis of the waveform data
    > and then uses features within the waveform as the basis for
    > controlling some external devices. The features (peaks) that
    > are to be used must be selected by a human operator. Ideally,
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    > of interest.
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    > such an interface?
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    > the users to select peaks, but the users are not totally happy
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