42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
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import numpy as np
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import cosmotool as ct
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import borgicgen as bic
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from matplotlib import pyplot as plt
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cosmo={'omega_M_0':0.3175, 'h':0.6711}
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cosmo['omega_lambda_0']=1-cosmo['omega_M_0']
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cosmo['omega_k_0'] = 0
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cosmo['omega_B_0']=0.049
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cosmo['SIGMA8']=0.8344
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cosmo['ns']=0.9624
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zstart=50
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astart=1/(1.+zstart)
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halfPixelShift=False
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posx,vel,density,N,L,a_ic,cosmo = bic.run_generation("initial_condition_borg.dat", 0.001, astart, cosmo, supersample=1, shiftPixel=halfPixelShift, do_lpt2=False)
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w1 = bic.whitify(density, L, cosmo, supergenerate=1)
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w2 = bic.whitify(density, L, cosmo, supergenerate=2)
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N = w1.shape[0]
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Ns = w2.shape[0]
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w1_hat = np.fft.rfftn(w1)*(L/N)**3
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w2_hat = np.fft.rfftn(w2)*(L/Ns)**3
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P1, b1, dev1 = bic.bin_power(np.abs(w1_hat)**2, L, range=(0,3),bins=150,dev=True)
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P2, b2, dev2 = bic.bin_power(np.abs(w2_hat)**2, L, range=(0,3),bins=150,dev=True)
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fig = plt.figure(1)
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fig.clf()
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plt.fill_between(b1, P1*(1-dev1), P1*(1+dev1), label='Supergen=1', color='b')
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plt.fill_between(b2, P2*(1-dev2), P2*(1+dev2), label='Supergen=2', color='g', alpha=0.5)
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ax = plt.gca()
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ax.set_xscale('log')
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plt.ylim(0.5,1.5)
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plt.xlim(1e-2,4)
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plt.axhline(1.0, color='red', lw=4.0)
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plt.legend()
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plt.show()
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