Create a math function from 1D array!

[Tuong]

Dear all!

I have an 1D array data that changed by the time. How can I create its function in Labview from this data, e.g. x=f(x_dot,t)  with x_dot is the changed value of x.

Thanks a lot.

[altenbach]

It is not entirely clear from your description if your input is x or x_dot.

1. If you input is x_dot and you want x, make a running sum.
2. if your input is x and you want an array with x_dot, take the difference of adjacent elements.

In both cases you might need to worry about initial conditions, scaling by the t increment, etc.

Anyway, the attached simple VI shows both possibilities using a simple FOR loop containing a shift register. Let me know if it makes sense.

Message Edited by altenbach on 03-20-200607:45 PM