import pspec
c = 0.3 #m/ns
twopi = 2.*np.pi
N = 512
fq = np.linspace(0.1,0.2,N)
L2 = RMT.better_guess_l2(fq)
Rms,W = RMT.RMTmat(fq)
plot_me = np.zeros((N,N),dtype=np.complex)
delays = np.fft.fftshift(np.fft.fftfreq(N,fq[1]-fq[0]))
wgt = dsp.gen_window(N,window='blackman-harris')
Rm0 = 5.
for i,Rm in enumerate(Rms):
QiUi = RMT.gen_rm_spec(fq,Rm+Rm0)
plot_me[:,i] = np.fft.fftshift(np.fft.ifft(QiUi*wgt))
plot_me1 = plot_me*np.conjugate(plot_me)
plot_me1 = plot_me1.real
plot_me1 /= np.max(plot_me1)
figure(0)
imshow(10.*np.log10(plot_me1),aspect='auto',interpolation='nearest',
extent=[delays[0],delays[-1],Rms[-1],Rms[0]],
vmax=0,vmin=-100)
ylabel('Rotation Measure [$m^{-2}$]')
xlabel('Delay [ns]')
title('$|W|^2$ [dB]')
colorbar()
draw()
#yticks([])
xlabel(xlabels)
suptitle(title)
#subplots_adjust(hspace=0)
draw()
nfig += 1
#GENERATE A FEW SIMULATED SPECTRA
fq = np.linspace(0.1, 0.2, 512)
RMsim = [10., np.sqrt(200.)]
RMlabel = ['$10\ m^{-2}$', '10$\sqrt{2}\ m^{-2}$', 'Sum']
QiUsim = []
for r in RMsim:
QiUsim.append(RMT.gen_rm_spec(fq, r))
QiUsim.append(np.sum(QiUsim, axis=0) / 2.)
plot3(fq, QiUsim, RMlabel, 'Frequency (GHz)',
'Simulated Spectra $\Re\{Q + iU\}$')
##TEST THE REBIN/FFT METHOD
l2, QiUsim_l2 = [], []
for i, spec in enumerate(QiUsim):
l2i, spec_l2 = RMT.rebin_nu2lam2(fq, spec)
l2.append(l2i)
QiUsim_l2.append(spec_l2)
#plot3(l2,QiUsim_l2,RMlabel,'$\lambda^2\ (m^2)$ ','Rebinned into $\lambda^2$')
RM_samp, QiUsim_rm = [], []
#yticks([])
xlabel(xlabels)
suptitle(title)
#subplots_adjust(hspace=0)
draw()
nfig += 1
#GENERATE A FEW SIMULATED SPECTRA
fq = np.linspace(0.1,0.2,512)
RMsim = [10.,np.sqrt(200.)]
RMlabel = ['$10\ m^{-2}$','10$\sqrt{2}\ m^{-2}$','Sum']
QiUsim = []
for r in RMsim:
QiUsim.append(RMT.gen_rm_spec(fq,r))
QiUsim.append(np.sum(QiUsim,axis=0)/2.)
plot3(fq,QiUsim,RMlabel,'Frequency (GHz)','Simulated Spectra $\Re\{Q + iU\}$')
##TEST THE REBIN/FFT METHOD
l2,QiUsim_l2 = [],[]
for i,spec in enumerate(QiUsim):
l2i,spec_l2 = RMT.rebin_nu2lam2(fq,spec)
l2.append(l2i)
QiUsim_l2.append(spec_l2)
#plot3(l2,QiUsim_l2,RMlabel,'$\lambda^2\ (m^2)$ ','Rebinned into $\lambda^2$')
RM_samp,QiUsim_rm = [],[]
for i,spec in enumerate(QiUsim_l2):
