Using GNU Octave FFT functions
- by CFP
Hello world!
I'm playing with octave's fft functions, and I can't really figure out how to scale their output: I use the following (very short) code to approximate a function:
function y = f(x)
y = x .^ 2;
endfunction;
X=[-4096:4095]/64;
Y = f(X);
# plot(X, Y);
F = fft(Y);
S = [0:2047]/2048;
function points = approximate(input, count)
…
