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corrmx (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

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Owning Class: spectral analysis

Requires: MathScript RT Module


a = corrmx(x, m)

a = corrmx(x, m, s)

[a, r] = corrmx(x, m)

[a, r] = corrmx(x, m, s)

Legacy Name: corrmtx


Creates a Toeplitz matrix a, such that a'*a is an estimate of the autocorrelation matrix for x.



Name Description
x Specifies an input signal. x is a real or complex vector.
m Specifies the order of the output matrix. m is an integer.
s Specifies how to create the output matrix. s accepts the following values.

'autocorrelation' (default) LabVIEW uses a standard approach with windowing at both sides.
'prewindowed' LabVIEW uses windowing at the beginning.
'postwindowed' LabVIEW uses windowing at the end.
'covariance' LabVIEW does not use windowing.
'modified' LabVIEW uses the more advanced covariance method.


Name Description
a Returns the Toeplitz matrix.
r Returns the autocorrelation matrix estimate, a'*a.


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 = 1:10;
X = corrmx(A, 5)

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