Combine two graphs to become one (Multi plotting) but with 2 analog signals

[apapa]

Hello everyone!

Im working on a project 'Welding Process which requires me to use the Labview 2010 program to analyse the measured data.

Attached is the Labview screenshots of the developed front panels..

My problem now is, as seen in the first picture, there are 2 separate curves i.e Current and Voltage..

What i need now is to know how do i combine these 2 graphs into one (Multi Plotting).. Which means on that combined curve (combination of current graph and voltage), when i move the cursor on any voltage value, the other cursor will simultaneously move to the corresponding current.  The problem is Multi Plot function  only works with mixed signals (1 analog, and 1 digital) but i have 2 analog signals. How do i solve this? 

Attached is the Labview screenshots of the developed front panels..

Thanks!

[GerdW]

Hi apapa,

on how to plot 2 curves in one graph you simply have to read the context help of the graph.

On cursor movement: you can read the position of cursor 1 and move cursor 2 accordingly. There should be an event available for cursor moves...

- There also is a good German LV forum...

- Please don't attach proprietary file formats (like Word-DOC), when a simple PNG (!) picture will do the same...

[apapa]

Hello there,

Thanks for the reply.. Ive read some tutorials and it says that to do multi plotting/ multi graph u have to have 2 different signals (analog and digital).. But in  my case both signals that i have are analog.. Is it possible to encounter this problem? Sorry if im asking too much, this is my first time working with labview program.

[GerdW]

Hi apapa,

read the contextg help of the graph. There it shows you how to wire 2 analog "signals" to one graph.

You should also look in the Examples, that come with LabVIEW. Look for "graph" in the example finder (in the help menu)...

[GerdW]

It seems you already cross-posted in the German LV forum...

[apapa]

Hello there,

No it wasnt from me.. But thanks for pointing out!