How to draw voltage Vs current curve with labVIEW 7.1

[phyu11@gmail.com]

Hi all,

I'd like to know that how can I draw voltage Vs current curve using labView.  My labVIEW version is 7.1.

Thanks a lot

[RavensFan]

It sounds like you want an XY Graph.

[altenbach]

If the voltage values are spaced equally, just feed your current array to a waveform graph and adjust x0 and dx according to the voltage ramp.

In the more general case, use an xy graph.

Where does you data come from? How does it look like? Do you e.g. have two arrays of values, or do you want to graph them as you acquire?

Check the online help and example finder, there should be plenty of examples.

[phyu11@gmail.com]

The data will be coming from outside function generator to labVIEW through GPIB .  And the curve is just showing how the measurement data related with each other.  And i am not going to graph them. just measurement data on curve.

[Dennis_Knutson]

You want to draw a curve but not use a graph. That's clear as mud. Do you want to use the picture control to draw it?

[altenbach]

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phyu11@gmail.com wrote:
And i am not going to graph them. just measurement data on curve.

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... still scratching my head on that one. 😉

In the title of the post you say you want to draw a curve, now you suddenly no longer want to. What kind of measurements do you want do do on your data?

[phyu11@gmail.com]

so sorry to confuse you because of my wrong explanation.  I want to draw Voltage Vs current curve so that i can know the relationship between them.

[Dennis_Knutson]

Now that we've established that you really do want to plot some data, you are going to have to explain exactly what your problem is. You've already been given a couple of options (the XY Graph and the Waveform Graph) but you haven't answered any of the other questions. Are you having problems with getting the voltage and current measurements from the instruments? Or do you not know how to format the data that is being returned? There's a pretty big message body that you can use to provide this sort of information and you also have the ability to post code that you have already written.