| Wavelet Toolbox | |
Importing and Exporting Information from the Graphical Interface
The Continuous Wavelet 1-D graphical interface tool lets you import information from and export information to disk.
Loading Signals into the Continuous Wavelet 1-D Tool
To load a signal you've constructed in your MATLAB workspace into the Continuous Wavelet 1-D tool, save the signal in a MAT-file (with extension mat or other).
For instance, suppose you've designed a signal called warma and want to analyze it in the Continuous Wavelet 1-D tool.
save warma warma
The workspace variable warma must be a vector.
sizwarma = size(warma)
sizwarma =
1 1000
To load this signal into the Continuous Wavelet 1-D tool, use the menu option File
Load Signal.
A dialog box appears that lets you select the appropriate MAT-file to be loaded.
| Note The first one-dimensional variable encountered in the file is considered the signal. Variables are inspected in alphabetical order. |
Saving Wavelet Coefficients
The Continuous Wavelet 1-D tool lets you save wavelet coefficients to disk. The toolbox creates a MAT-file in the current directory with the extension wc1 and a name you give it.
To save the continuous wavelet coefficients from the present analysis, use the menu option FileSave Coefficients.
A dialog box appears that lets you specify a directory and filename for storing the coefficients.
FileDemo Analysiswith haar at scales [1:1:64] --> Cantor curve.
After saving the continuous wavelet coefficients to the file cantor.wc1, load the variables into your workspace.
load cantor.wc1 -mat whos
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wname |
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char array |
Variables coefs and scales contain the continuous wavelet coefficients and the associated scales. More precisely, in the above example, coefs is a 64-by-2188 matrix, one row for each scale; and scales is the 1-by-64 vector 1:64. Variable wname contains the wavelet name.
| | Continuous Analysis Using the Graphical Interface | One-Dimensional Complex Continuous Wavelet Analysis | |