Dear all,

I have a Mathcad Document about Fourier transform that I want to translate into SMath.
I already dowloaded the FFTPack plugin. I used the same functions from the Mathcad document which doesn't work in SMath.
I tried a bit but nothing is working. The error message says "The argument must be a scalar."
I attached screenshots from my SMath document and the original Mathcad document.

Does anyone have an idea or a helpful tip?

Thanks in advance

fft_spalt_test.sm (5,42 KiB) scaricato 521 volta(e).

try to construct the vector like this

Mostra spoiler

sergio

Thank you! That worked and the error message is gone.

I'm still having trouble plotting the graph. The graph is not being displayed but there isn't any error message.
Did I overlook something? Does the rfft() function work different in SMath than in Mathcad?

Thanks in advance

Check if it can help you. The graph has the correct shape but the values are different.fft_spalt_test(sergio).sm (10,62 KiB) scaricato 522 volta(e).
sergio

Thank you Sergio!

I'm going to try around with your file a bit more. But having the correct shape is already very helpful and good enough.