HRV Histogram VI

Owning Palette: HRV Analysis VIs

Requires: Biomedical Toolkit

Calculates the histogram and geometric measurements of RR intervals.

Example

	bin width specifies the bin width of the histogram, in seconds. bin width must be greater than 0. The default is 0.0078125.
	raw RR specifies the raw RR intervals.
	detrend? specifies whether to detrend the raw RR intervals. The default is FALSE. If you set detrend? to TRUE, this VI calculates RR triangular index and TINN by using the detrended RR intervals.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	RR interval histogram returns the histogram of the input RR intervals.
	RR triangular index returns the triangular index of the input RR intervals. This VI calculates the triangular index by dividing the total number of all RR intervals by the maximum height of the histogram of all RR intervals.
	TINN returns the triangular interpolation of RR interval histogram, in microseconds. TINN is the baseline width of the minimum square difference triangular interpolation of the highest peak of the histogram of all RR intervals.
	error out contains error information. This output provides standard error out functionality.
	X scale returns the scale information of the x-axis of RR interval histogram. Minimum returns the minimum value of the X scale. Maximum returns the maximum value of the X scale. Increment returns the increment value of the X scale. Minor Increment returns the minor increment value of the X scale. Start returns the start value of the X scale.
	Y scale returns the scale information of the y-axis of RR interval histogram. Minimum returns the minimum value of the Y scale. Maximum returns the maximum value of the Y scale. Increment returns the increment value of the Y scale. Minor Increment returns the minor increment value of the Y scale. Start returns the start value of the Y scale.

Example

Refer to the HRV Analyzer VI in the labview\examples\Biomedical\Biosignal directory for an example of using the HRV Histogram VI.