R: Continuous Wavelet Transform Display

cwtimage {Rwave} | R Documentation

## Continuous Wavelet Transform Display

### Description

Converts the output (modulus or argument) of cwtpolar to a 2D array and displays on the graphic device.

### Usage

    cwtimage(input)

### Arguments

`input` | 3D array containing a continuous wavelet transform

### Details

The output contains the (complex) values of the wavelet transform of the input signal. The format of the output can be

2D array (signal\_size x nb\_scales)

3D array (signal\_size x noctave x nvoice)

### Value

2D array continuous (complex) wavelet transform

### References

See discussions in the text of “Practical Time-Frequency Analysis”.

### See Also

`cwtpolar`, `cwt`, `DOG`.

### Examples

        x <- 1:512
        chirp <- sin(2*pi * (x + 0.002 * (x-256)^2 ) / 16)
        retChirp <- cwt(chirp, noctave=5, nvoice=12, twoD=FALSE, plot=FALSE)
        retPolar <- cwtpolar(retChirp)
        retImageMod <- cwtimage(retPolar$modulus)
        retImageArg <- cwtimage(retPolar$argument)

[Package Rwave version 2.6-0 Index]