2.11.2.2 cwt(Pro)

Menu Information

Analysis: Signal Processing: Wavelet: Continuous Wavelet

Compute one dimensional continuous wavelet transform coefficients

This feature is for OriginPro only.

1. cwt ix1:=Col(1) ix2:=Col(2);

2. cwt ix1:=Col(1) ix2:=Col(2) type:=maxhat;

Display Name	Variable Name	I/O and Type	Default Value	Description
Discrete Signal	ix1	Input vector	<active>	Specify the input signal
Scale	ix2	Input vector	<active>	Specify the scale vector. All scales should be real and positive.
Wavelet Type	type	Input int	0	Specify the type of wavelet. Option list morlet :Morlet{0} The Morlet wavelet. dgauss:DGauss{1} The Derivative of a Gaussian wavelet. mexhat:MexHat{2} The Mexican Hat Wavelet.
Wave Number	param	Input int	5	If wavelet type is Morlet, this variable specifies the wave number, which should be not less than 5 and not larger than 20. If wavelet type is DGauss, this variable specifies the order of derivative, which should be a positive integer less than 9.
Use Pseudo-Frequency	upf	Input int	0	Specify whether to create the pseudo-frequency and used as the vertical tick label for image plot created by the coefficient matrix. 1 means create pseudo-frequency.
Pseudo-Frequency	pf	Output vector	<optional>	Specify a range for outputting the pseudo-frequency. See the syntax here.
Coefficient	rcoef	Output Range	[<input>]<new>!1	Specify a range for outputting the coefficients. See the syntax here.
Coefficient Matrix	mcoef	Output MatrixObject	<new>	Check this if you want to output the coefficients to a matrix. Then you can specify the output matrix. See the syntax here.
Create Image Plot	plot	Input int	1	Specify whether to create plot for the result.

1. To perform cwt to data in Column 2 and scale vector in Column 3 with default setting, use the script command:

cwt ix1:=col(2) ix2:=col(3);

2. To perform cwt using a pre-saved analysis theme called MyTheme, use the Command Window:

cwt -t "MyTheme"

3. To perform cwt and create and output the pseudo frequency for image plot:

cwt -r 2 ix1:=col(1) ix2:=col(2)upf:=1 pf:=[<input>]<input>!<new>, mcoef:=<new>;

For more examples, please refer to XF Script Dialog (press F11).

For more informatioin, please refer to our User Guide.