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Merge pull request #1139 from LSSTDESC/bacco_lbias
Bacco lbias
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| import os | ||
| import numpy as np | ||
| import pyccl as ccl | ||
| import pyccl.nl_pt as pt | ||
| import pytest | ||
|
|
||
| LPTPK_TOLERANCE = 1e-4 | ||
|
|
||
| # Set cosmology | ||
| COSMO = ccl.Cosmology(Omega_c=0.25, Omega_b=0.05, | ||
| h=0.7, sigma8=0.8, n_s=0.96) | ||
|
|
||
| # Redshifts | ||
| zs = np.array([0., 1.]) | ||
|
|
||
| # Tracers | ||
| ptt = {} | ||
| ptt['g'] = pt.PTNumberCountsTracer(b1=1.3, b2=1.5, bs=1.7, bk2=0.1) | ||
| ptt['m'] = pt.PTMatterTracer() | ||
|
|
||
| # Calculator | ||
| a_arr = 1./(1+np.array([0., 0.25, 0.5, 0.75, 1.]))[::-1] | ||
| ptc = pt.BaccoLbiasCalculator(log10k_min=-4, log10k_max=-0.47, | ||
| nk_per_decade=20, a_arr=a_arr) | ||
|
|
||
| ptc.update_ingredients(COSMO) | ||
|
|
||
| # Read data | ||
| dirdat = os.path.join(os.path.dirname(__file__), 'data') | ||
| data = [] | ||
| data.append(np.loadtxt(os.path.join(dirdat, 'pt_bm_bacco_lbias_z0.txt'), | ||
| unpack=True)) | ||
| data.append(np.loadtxt(os.path.join(dirdat, 'pt_bm_bacco_lbias_z1.txt'), | ||
| unpack=True)) | ||
| order = ['gg', 'gm'] | ||
|
|
||
|
|
||
| @pytest.mark.parametrize('comb', enumerate(order)) | ||
| def test_pt_pk(comb): | ||
| i_d, cc = comb | ||
| t1, t2 = cc | ||
|
|
||
| ptt1 = ptt[t1] | ||
| ptt2 = ptt[t2] | ||
|
|
||
| pk = ptc.get_biased_pk2d(ptt1, tracer2=ptt2) | ||
|
|
||
| for iz, z in enumerate(zs): | ||
| a = 1./(1+z) | ||
| kin = data[iz][0] | ||
| ind = np.where((kin < 1.0) & (kin > 1E-3)) | ||
| k = kin[ind] | ||
| dpk = data[iz][i_d+1][ind] | ||
| tpk = pk(k, a, COSMO) | ||
| assert np.all( | ||
| np.fabs(tpk / dpk - 1) < LPTPK_TOLERANCE | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,4 @@ | ||
| from .tracers import * | ||
| from .ept import * | ||
| from .lpt import * | ||
| from .bacco_lbias import * |
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