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- ; This batch file creates a plot of the power spectrum
- ; of the simulated signal used in the example from Chapter 13,
- ; "Signal Processing", of _Using IDL_.
-
- @sigprc01.bat ; compute time data sequence u
-
- V = FFT(U) ; compute spectrum v
-
- F = FINDGEN(N/2+1) / (N*delt) ; f = [0.0, 1.0/(N*delt), ... , 1.0/(2.0*delt)]
-
- ; log-log plot of power spectrum
-
- PLOT, F, ABS(V(0:N/2))^2, YTITLE='Power Spectrum of u(k)', $
- /YLOG, XTITLE='Frequency in cycles / second', /XLOG, $
- XRANGE=[1.0,1.0/(2.0*delt)], XSTYLE=1
-