WA WP Read Node VI

Owning Palette: Wavelet Packet VIs

Requires: Advanced Signal Processing Toolkit

Reads the wavelet packet (WP) coefficients of a terminal node that path specifies. If you want to read the coefficients of a non-terminal node, use the WA WP Join VI to convert the node to a terminal node.

Examples

	WP session specifies a reference to an existing wavelet packet structure.
	path specifies the path associated with a node of the wavelet packet tree. For this VI, path must refer to a terminal node of the wavelet packet tree. path is a combination of the characters 0 and 1, where 0 represents lowpass filtering, and 1 represents highpass filtering. For example, a value of 101 indicates that this VI passes the signal through a highpass filter, through a lowpass filter, and then through a highpass filter. path can be root, which represents the original signal without any filtering operation.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	WP session out returns a reference to an existing wavelet packet structure, which this VI can modify.
	node coef returns the wavelet packet coefficients of the terminal node that path specifies.
	error out contains error information. This output provides standard error out functionality.

Examples

Refer to the following VIs for examples of using the WA WP Read Node VI:

• Wavelet Packet - Read and Write Coefficients VI: labview\examples\Wavelet Analysis\WAGettingStarted
• Wavelet Packet - Read Entropy VI: labview\examples\Wavelet Analysis\WAGettingStarted
• Wavelet Packet Signal Compression VI: labview\examples\Wavelet Analysis\WAApplications