waveform with time stamps randomly separated

[stoeckel]

Folks,

I'd like to get your advice on the following task.

A spectrometer takes data at arbitrary, not foreseeable instants. To each new point a time stamp is attached. The data shall be displayed in a waveform graph with the data coordinate on the y-axis, the data points being appropriately spaced with the correct time stamps on the x-axis.

How can I do this? How can I create a waveform with arbitrarily spaced time lag between the points?

Thanks for any hint,

Peter

[GerdW]

HI Peter,

the wavefrom datatype only supports evenly spaced points. You cannot use it with randomly spaced datapoints.

To plot your data you should use a XY-graph instead. Use the timestamps as x-data and the datavalues for the y-axis...

[stoeckel]

Thanks, Gerd,

it works now.

P.

[Ben]

Sorry to differ Gerd.

In this thread  Iposted an example that shows the "t0" dictates the "X" value of the plotted point.

Ben

[GerdW]

Hi Ben,

you don't have excuse, it's a nice example.

So I learned something new: how to trick a waveform chart to display values without fixed dt
(Even when it needs some conversion routines when you collect your data in arrays...)

Message Edited by GerdW on 08-23-2007 02:18 PM