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INVDFT

 

Syntax: @INVDFT(R)

R = a range

@INVDFT generates the inverse Discrete Fourier Transform of the range R. Like @DFT, R must represent a real vector (either its row or column dimension must be 1), or a complex vector (either its row or column dimension must be 2). The result is always a complex vector.

Examples:

A B
1 0.99 0
2 3 6.2
3 4.1 1.1
4 3.3 6.3

With @INVDFT(A1..B4) in B6 gives:

B C
6 2.8475 3.4
7 -0.8025 -0.2
8 -0.3025 -2.85
9 -0.7525 -0.35

@INVDFT(G4..I6) = Error - @INVDFT, improper dimensions


next up previous contents index
Next: INVERT Up: A Function Reference Previous: INTRATE

NExS User's Guide, Version 1.4.5
Grey Trout Software
11 April 1999