R: Plot Short Time Fourier Transforms

plot.stft {e1071} | R Documentation

## Plot Short Time Fourier Transforms

### Description

An object of class `"stft"` is plotted as a gray scale image. The x-axis corresponds to time, the y-axis to frequency. If the default colormap is used, dark regions in the plot correspond to high values at the particular time/frequency location.

### Usage

    ## S3 method for class 'stft'
    plot(x, col = gray(63:0/63), ...)

### Arguments

`x` | An object of class `"stft"` as obtained by the function `stft`.
`col` | An optional colormap. By default 64 gray values are used, where white corresponds to the minimum value and black to the maximum.
`...` | further arguments to be passed to or from methods.

### Value

No return value. This function is only for plotting.

### Author(s)

Andreas Weingessel

### See Also

stft

### Examples

    x<-rnorm(500)
    y<-stft(x)
    plot(y)

[Package e1071 version 1.7-6 Index]