2.11.2.3 dwt(Pro)

Menu Information

Analysis: Signal Processing: Wavelet: Decompose

Brief Information

Perform 1D wavelet decomposition

Additional Information

This feature is for OriginPro only.

Command Line Usage

1. dwt ix:=Col(1);

2. dwt ix:=Col(1) type:=db2;

3. dwt ix:=Col(1) ext:=z;

4. dwt ix:=Col(1) ca:=Col(3) cd:=Col(4);

X-Function Execution Options

Please refer to the page for additional option switches when accessing the x-function from script

Variables

Display
Name 		Variable
Name 		I/O
and
Type 		Default
Value 		Description
Input ix

Input

vector

<active>

Specify the input signal

Wavelet Type & Order type

Input

int

H

Specify the wavelet type

Option list

  • haar:Haar
    Haar wavelet
  • db 2:DB2
    Daubechies wavelet (N=2)
  • db 3:DB3
    Daubechies wavelet (N=3)
  • db 4:DB4
    Daubechies wavelet (N=4)
  • db 5:DB5
    Daubechies wavelet (N=5)
  • db 6:DB6
    Daubechies wavelet (N=6)
  • db 7:DB7
    Daubechies wavelet (N=7)
  • db 8:DB8
    Daubechies wavelet (N=8)
  • db 9:DB9
    Daubechies wavelet (N=9)
  • db 10:DB10
    Daubechies wavelet (N=10)
  • b11:Bior1.1
    Biorthogonal (Nr=1, Nd=1)
  • b13:Bior1.3
    Biorthogonal (Nr=1, Nd=3)
  • b15:Bior1.5
    Biorthogonal (Nr=1, Nd=5)
  • b22:Bior2.2
    Biorthogonal (Nr=2, Nd=2)
  • b24:Bior2.4
    Biorthogonal (Nr=2, Nd=4)
  • b26:Bior2.6
    Biorthogonal (Nr=2, Nd=6)
  • b28:Bior2.8
    Biorthogonal (Nr=2, Nd=8)
  • b31:Bior3.1
    Biorthogonal (Nr=3, Nd=1)
  • b33:Bior3.3
    Biorthogonal (Nr=3, Nd=3)
  • b35:Bior3.5
    Biorthogonal (Nr=3, Nd=5)
  • b37:Bior3.7
    Biorthogonal (Nr=3, Nd=7)
Extension Mode ext

Input

int

P

Specify the end extension mode

Option list

  • periodic:Periodic
    The input signal will be viewed as periodic.
  • z:Zero -padded
    The data points outside the input range will be viewed as zeroes.
Approx Coefficient ca

Output

vector

<new>

Specify the vector for approximation coefficients

Detail Coefficient cd

Output

vector

<new>

Specify the vector for detail coefficients


Examples

1. To decompose the signal in Column 1 of the active sheet using Haar wavelet and periodic as the extension mode, use the script command:

dwt ix:=col(1)

2. To perform dwt using a pre-saved analysis theme called MyTheme, use the script command:

dwt -t "MyTheme"

More Information

For more information, please refer to our User Guide.


Related X-Functions

idwt, dwt2, idwt2

Keywords:discrete , decompose
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