make.signal2 {adlift} | R Documentation |
This function computes signal function values based on a grid input.
make.signal2(name, x, snr = Inf, ...)
name |
a character string of the test signal to create. |
x |
a vector of gridpoints. |
snr |
|
... |
This function is based on the make.signal
function included in the S-Plus wavelets module, except that the x vector can be irregular. As well as the signals included for the original version (e.g. the Donoho/Johnstone test signals), a piecewise polynomial can be sampled.
z |
the signal function values. |
The test signals have domain [0,1], so the grid vector x must have values within this interval.
Matt Nunes (matt.nunes@bristol.ac.uk), Marina Popa (Marina.Popa@bristol.ac.uk)
#create grid vector # xgrid<-rnorm(50) xgrid # pp<-make.signal2("ppoly",x=xgrid) # #piecewise polynomial data vector # plot(sort(xgrid),pp[order(xgrid)],type="l") #