Memorize traces on charts and graphs

[xdaf]

When you work with common lab instruments, such as oscilloscopes, you need sometimes to put a trace in memory in order to compare it with the new trace you obtain after modifying your circuit, or testing a new DUT.

A similar operation should be available on charts & graphs:

For example, by right clicking on the red trace, the option "memorize trace" should be available on the menu. The rusult will be:

Other functions normally implemented on digital scopes should be implemented as well (such as persistence)

[Dennis_Knutson]

Doesn't a shift register do what you want?

[xdaf]

Hi Dennis, thanks for the suggestion. If your application finishes executing, and leaves the image on the chart as result, the trace will be cleared as you run the application again (...unless I'm mistaken?)

[RavensFan]

That all depends on the way you program your application.

While I see your need and desire for this feature, I'm not sure it is necessary to add it to the graphs.  Graphs are designed to be used in numerous ways, so they need to be very flexible but very generic at their core.  This is a specialty use of the graph, and the features you want can all be handled in the programming of your application.  I don't see a reason to burden the graph itself with special features that are only required a very small percentage of the time for most graph users.

[xdaf]

That's correct: like many of the ideas posted on this section of the forum, there already is a way to obtain the result. But I believe this is a quick and simple way to obtain a feature I often use. The purpose of the idea exchange is to verify whether other users would find it useful.

Personally, I like to use my VIs as if they were lab instruments; so, sometimes I want to do on the the very same operations I perform on scopes, VNAs, spectrum analyzer...

Don't misunderstand me: any feedback is always welcome, espacially if it comes from the most experienced people working on this forum!

Message Edited by xdaf on 01-12-2010 06:37 PM

[Darren]

Any idea that has received less than 2 kudos within 2 years after posting will be automatically declined.