Length of data on XY plot

[spalinowy]

How can I change the length of data that is taken into the XY graph?
I do not want to have a graph of the entire waveform, and only select a fragment of it. How to change the number of samples that are taken to the chart?

[Brad_Turpin]

Hi spalinowy,

Both in DIAdem VIEW graphs and DIAdem REPORT graphs you can specify the desired X axis range that you want to display, by choosing the Xstart and Xstop values for the X axis.  In VIEW you do that with the sheet's cursor and zooming.  In REPORT you do that in the Graph's Xaxis configuration dialog.

Brad Turpin

DIAdem Product Support Engineer

National Instruments

[spalinowy]

Not exactly what I meant. I want to draw a graph with a lissajous figure and I want to have data in the drawing only from a certain time interval. However, amplitude is to be in full range.

[Dia791]

Hello,

sometimes I do something similar. For example, show only the "main process time", without heating-up and cool-down phase.

The most easy way I found is to create a new channel (just copy) and set the values of no interest (e.g. from T=0 to T=123) to NoValue.

This can be done via script and for different channels with different settings, only the times must be set/changed once. And (at least in my case) it's not needed to save the changed data file; create new channel, update the Report and export it, than close all.