I want to use the basic integration VI . However I don't have a formula for the input, I have an X and Y one dimensional arrays, How could I use this VI with just the one dimensional arrays rather than a formula?

Note that interpolation works most easily using an array of xy points. Also note that since the x values are now spaced equally, all we need is a plain waveform graph. You can set x0,dx via property node or more easily using a special cluster as shown {x0, dx, [Y]}. Here's what I might do:

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Use of Integration VI

Solved!

dsb@NI wrote:

I recommend path 3 because it requires one less assumption (wavelength spacing to get required accuracy).

Can you explain the term "required accuracy", because I did not see any such requirements.

Chances are that integration of a relatively slowly changing signal with over 1000 points is only very weakly dependent on the actual integration method, especially since the signal is noisy to begin with.

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Use of Integration VI

Re: Use of Integration VI