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Following this question.

How can I command gnuplot to draw this plot:

alt text

(from the bottommost example on this page).

I guess I need to do something similar to what is being done here. But what exactly?

Eventually I want to build a simple waveform viewer, that will get the binary data for several signals and will draw all of them one above the other, just like the example. Maybe you know a script or a tool that already does it ?

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I think it would have been more in spirit of this site if you had edited your old question with data from this one, but whatever. I certainly hope someone will be able to answer this. –  AndrejaKo Jul 15 '10 at 9:07
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up vote 1 down vote accepted

much as I value gnuplot, may I suggest ploticus at http://ploticus.sourceforge.net ?

have a look at the gallery: http://ploticus.sourceforge.net/gallery/index.html

edit: I kinda ignored that fact that you want to build something, and therefore need a C++ example or such. Have a look at audacity: http://audacity.sourceforge.net/

The track display code - displaying tracks above each other - might just be what you are looking for.

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