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peaks/valleys indicates whether to find peaks or valleys.
0 | Peaks (positive-going bumps) | 1 | Valleys (negative-going bumps) |
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Signal In contains the waveform in which to find peaks or valleys.
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threshold rejects peaks and valleys that are too small. For peaks, the VI ignores any peak found with a fitted amplitude that is less than threshold. The VI ignores valleys if the fitted trough is greater than threshold.
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width specifies the number of consecutive data points to use in the quadratic least squares fit. The value should be no more than about 1/2 of the half-width of the peak/valley and can be much smaller (but >2) for noise-free data. Large widths can reduce the apparent amplitude of peaks and shift the apparent location. For noisy data, this modification is not important because the noise obscures the actual peak.
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error in describes error conditions that occur before this VI or function runs.
The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurs before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
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status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
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code is the error or warning code. The default is 0.
If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
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source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
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If initialize is TRUE (default), the VI processes the first block of data. The VI requires some internal setup that must be done at the start for proper operation.
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If end of data is TRUE (default), the VI processes the last block of data. The VI cleans up internal data after the last block has been processed.
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# found contains the number of peaks/valleys found in the current block of data.
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Locations contains the locations of peaks/valleys found in the current block of data. Locations are reported in indices from the start of processing.
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Amplitudes contains the amplitudes of peaks/valleys found in the current block of data.
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2nd Derivatives contains the second derivatives of the peaks/valleys found in the current block of data.
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error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces.
Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.
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status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
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code is the error or warning code.
If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
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source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.
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