Description Usage Arguments Details Value Note Author(s) References
View source: R/spectral_methods.R
Generates the evolutive Fourier spectrogram of a signal, and returns it for use in FTGramImage
.
1  EvolutiveFFT(sig, dt, ft, freq.span, taper = 0.05)

sig 
Signal to analyze. 
dt 
Sample rate (must be constant). 
ft 
Fourier transform input parameters

freq.span 
Frequency range to return. 
taper 
Amount of cosine taper to apply. 
This is an internal function and users will likely not call it directly.
z 
Power spectrum 
y 
Frequency 
x 
Time 
original.signal 
The input signal 
tt 
Sample times based on input sample rate 
This is a modification of the evolfft
function in the RSEIS
package.
Daniel C. Bowman [email protected], Jonathan M. Lees
Jonathan M. Lees (2012). RSEIS: Seismic Time Series Analysis Tools. R package version 3.13.
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