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dftmx (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

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Owning Class: transforms

Requires: MathScript RT Module


b = dftmx(a)

Legacy Name: dftmtx


Computes the discrete Fourier transform matrix.



Name Description
a Specifies the order of the matrix. a is a positive integer.


Name Description
b Returns the discrete Fourier transform matrix. b is a complex matrix of values around the unit-circle whose inner product with a column vector of length a yields the discrete Fourier transform of the vector.


The following table lists the support characteristics of this function.

Supported in the LabVIEW Run-Time Engine Yes
Supported on RT targets Yes
Suitable for bounded execution times on RT Not characterized


a = (1:5)';
f1 = fft(a);
f2 = dftmx(length(a))*a

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