LabWindows/CVI

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CxSpectrum

Advanced Analysis Library Only

AnalysisLibErrType CxSpectrum (NIComplexNumber array[], ssize_t numberOfElements, double spectrum[]);

Purpose

Calculates the power spectrum of the complex input array. CxSpectrum uses the following formula to obtain the power spectrum ps:

CxSpectrum performs the operation in place and overwrites the input array.

Example Code

/* Generate an array with random numbers and calculate its power spectrum. */

Parameters

Input
Name Type Description
array NIComplexNumber [] The array used to compute the power spectrum.

numberOfElements ssize_t Number of elements in the input array.
Output
Name Type Description
spectrum double [] The power spectrum.

Return Value

Name Type Description
status AnalysisLibErrType A value that specifies the type of error that occurred. Refer to analysis.h for definitions of these constants.

Additional Information

Library: Advanced Analysis Library

Include file: analysis.h

LabWindows/CVI compatibility: LabWindows/CVI 2012 and later

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