def __init__(self, rzero, PSF_Interpolator=None,
PSF_Evaluator=None, **kwargs):
if type(PSF_Interpolator) == type(None):
from WavefrontPSF.defaults import param_default_kils
params = param_default_kils()
PSF_Interpolator = Mesh_Interpolator(mesh_name=params['mesh_name'],
directory=params['mesh_directory'])
if type(PSF_Evaluator) == type(None):
# translate rzero to coefficients
rzeros_float = np.array([0.08 + 0.01 * i for i in xrange(15)])
rzeros = ['{0:.2f}'.format(0.08 + 0.01 * i) for i in xrange(15)]
# always want the rzero one above so that we underestimate it
# note that this also implies that we want a dc component for e0 in
# addition to e1 and e2
rzero_i = np.searchsorted(rzeros_float, rzero)
if rzero_i >= len(rzeros):
# if it is too big, put it to the last entry
rzero_i = len(rzeros) - 1
rzero_key = rzeros[rzero_i]
from WavefrontPSF.defaults import param_default_kils
params = param_default_kils()
PSF_Evaluator = Zernike_Evaluator(*np.load(params['analytic_coeffs']).item()[rzero_key])
# set the drawer
PSF_Drawer = Zernike_to_Misalignment_to_Pixel_Interpolator()
super(DECAM_Analytic_Wavefront, self).__init__(
PSF_Evaluator=PSF_Evaluator,
PSF_Interpolator=PSF_Interpolator,
PSF_Drawer=PSF_Drawer,
**kwargs)
def drive_fit(expid, params={}, weights={}, skip_fit=False):
params_default = {'analytic': True, 'number_sample': 0, 'verbose': True,
'num_bins': 1}
params_default.update(param_default_kils(expid))
params_default.update(params)
params = params_default
model = Digestor().digest_directory(
params['data_directory'],
file_type=params['data_name'])
if params['number_sample'] > 0:
rows = np.random.choice(model.index.values,
params['number_sample'], replace=False)
model = model.ix[rows]
# guess rzero
rzero = r0_guess(model['e0'].min())
rzeros_float = np.array([0.08 + 0.01 * i for i in xrange(15)])
rzeros = ['{0:.2f}'.format(0.08 + 0.01 * i) for i in xrange(15)]
# always want the rzero one above so that we underestimate it
# note that this also implies that we want a dc component for e0 in
# addition to e1 and e2
rzero_i = np.searchsorted(rzeros_float, rzero)
rzero_key = rzeros[rzero_i]
model['rzero'] = rzero
# get the PSF_Interpolator
PSF_Interpolator = Mesh_Interpolator(mesh_name=params['mesh_name'],
directory=params['mesh_directory'])
if params['analytic']:
PSF_Evaluator = Zernike_Evaluator(*np.load(params['analytic_coeffs']).item()[rzero_key])
WF = DECAM_Analytic_Wavefront(rzero=rzero,
PSF_Interpolator=PSF_Interpolator,
PSF_Evaluator=PSF_Evaluator,
num_bins=params['num_bins'], model=model)
else:
WF = DECAM_Model_Wavefront(PSF_Interpolator=PSF_Interpolator,
num_bins=params['num_bins'],
model=model)
misalignment = translate_misalignment_to_arguments({})
# fix some keys
pop_keys = ['rzero', 'delta1', 'delta2', 'zeta1', 'zeta2']
for pop_key in pop_keys:
_ = misalignment.pop(pop_key)
if skip_fit:
return WF
minuit, chi2, plane = do_fit(WF, misalignment=misalignment, verbose=params['verbose'], weights=weights)
return minuit, chi2, plane, WF
def __init__(self, PSF_Interpolator=None, **kwargs):
# data here is a csv with all the zernikes
if type(PSF_Interpolator) == type(None):
from WavefrontPSF.defaults import param_default_kils
params = param_default_kils()
PSF_Interpolator = Mesh_Interpolator(mesh_name=params['mesh_name'],
directory=params['mesh_directory'])
PSF_Drawer = Zernike_to_Misalignment_to_Pixel_Interpolator()
super(DECAM_Model_Wavefront, self).__init__(
PSF_Evaluator=Moment_Evaluator(),
PSF_Interpolator=PSF_Interpolator,
PSF_Drawer=PSF_Drawer,
**kwargs)
def stamp_collector(expid, Nmax=0, rzero=None, snr_max=400, snr_min=90):
results = np.load(jamierod_dir + '/params/params_{0:08d}.npy'.format(expid)).item()
keys = sorted([key for key in results.keys() if ('error' not in key and 'fix' not in key and 'limit' not in key)])
misalignment = {key: results[key] for key in keys}
params = {'expid': expid,
'misalignment': misalignment,
# jamie's params:
'mesh_directory': '/nfs/slac/g/ki/ki22/roodman/ComboMeshesv20',
'mesh_name': 'Science-20121120s1-v20i2_All', }
params_default = {'snr_key': 'SNR_WIN',
'snr_max': snr_max,
'snr_min': snr_min,
'data_name': '_selpsfcat.fits',
'num_bins': 4
}
params_default.update(param_default_kils(expid))
params_default.update(params)
params = params_default
fits_files = glob(params['data_directory'] + '/*{0}'.format(params['data_name']))
dig = Digestor()
model, data_stamps = dig.digest_fits(fits_files[0], do_exclude=True)
data_stamps = data_stamps['VIGNET']
for fits_file in fits_files[1:]:
model_i, data_stamps_i = dig.digest_fits(fits_file, do_exclude=True)
model = model.append(model_i, ignore_index=True)
data_stamps = np.vstack((data_stamps, data_stamps_i['VIGNET']))
if params['snr_key'] in model.columns:
conds = ((model[params['snr_key']] > params['snr_min']) &
(model[params['snr_key']] < params['snr_max']))
data_stamps = data_stamps[conds.values]
model = model[conds]
if Nmax > 0:
# cut out Nmax objects
rows = np.random.choice(len(model),
Nmax, replace=False)
model = model.iloc[rows]
data_stamps = data_stamps[rows]
# set data_stamps to be float64 like the model stamps
data_stamps = data_stamps.astype(np.float64)
if type(rzero) == type(None):
model['rzero'] = results['rzero']
else:
model['rzero'] = rzero
# get the PSF_Interpolator
PSF_Interpolator = Mesh_Interpolator(mesh_name=params['mesh_name'],
directory=params['mesh_directory'])
WF = DECAM_Model_Wavefront(PSF_Interpolator=PSF_Interpolator,
num_bins=params['num_bins'],
model=model)
def plane(rzero,
z04d, z04x, z04y,
z05d, z05x, z05y,
z06d, z06x, z06y,
z07d, z07x, z07y,
z08d, z08x, z08y,
z09d, z09x, z09y,
z10d, z10x, z10y,
z11d, z11x, z11y,
dz, dx, dy, xt, yt,
e0, e1, e2,
delta1, delta2,
zeta1, zeta2, **kwargs):
wf_misalignment = {'z04d': z04d, 'z04x': z04x, 'z04y': z04y,
'z05d': z05d, 'z05x': z05x, 'z05y': z05y,
'z06d': z06d, 'z06x': z06x, 'z06y': z06y,
'z07d': z07d, 'z07x': z07x, 'z07y': z07y,
'z08d': z08d, 'z08x': z08x, 'z08y': z08y,
'z09d': z09d, 'z09x': z09x, 'z09y': z09y,
'z10d': z10d, 'z10x': z10x, 'z10y': z10y,
'z11d': z11d, 'z11x': z11x, 'z11y': z11y,
'dz': dz, 'dx': dx, 'dy': dy, 'xt': xt, 'yt': yt}
return wf_misalignment
wf_misalignment = plane(**misalignment)
# get evaluated PSFs
stamps, eval_data = WF.draw_psf(WF.data, force_interpolation=True,
misalignment=wf_misalignment)
# apply shear to stamps directly!
evaluated_psfs = WF.evaluate_psf(stamps, misalignment=wf_misalignment)
# make sure evaluated_psfs has the right index
evaluated_psfs.index = eval_data.index
# combine the results from PSF_Evaluator with your input data
combined_df = evaluated_psfs.combine_first(eval_data)
# TODO: Deal with constant jitter terms! Currently the results are off and seem to be off related to the overall magnitude...
## # add dc factors
## # combined_df['e0'] += results['e0']
## # combined_df['e1'] += results['e1']
## # combined_df['e2'] += results['e2']
## # combined_df['delta1'] += results['delta1']
## # combined_df['delta2'] += results['delta2']
## # combined_df['zeta1'] += results['zeta1']
## # combined_df['zeta2'] += results['zeta2']
## e1 = results['e1'] * 5 # empirical correction?
## e2 = results['e2'] * 5
## Mx = combined_df['Mx'].values
## My = combined_df['My'].values
## esq = e1 * e1 + e2 * e2
## if esq < 1e-8:
## A = 1 + esq / 8 + e1 * (0.5 + esq * 3 / 16)
## B = 1 + esq / 8 - e1 * (0.5 + esq * 3 / 16)
## C = e2 * (0.5 + esq * 3 / 16)
## else:
## temp = np.sqrt(1 - esq)
## cc = np.sqrt(0.5 * (1 + 1 / temp))
## temp = cc * (1 - temp) / esq
## C = temp * e2
## temp *= e1
## A = cc + temp
## B = cc - temp
## matrix = np.array([[A, C], [C, B]])
## matrix /= A * B - C * C
## offsetsx = -Mx * (A + C - 1)
## offsetsy = -My * (C + B - 1)
## # apply transformation
## stamps_transformed = []
## for stamp, offsetx, offsety in zip(stamps, offsetsx, offsetsy):
## stamps_transformed_i = affine_transform(stamp, matrix, (offsetx, offsety))
## stamps_transformed.append(stamps_transformed_i)
## stamps_transformed = np.array(stamps_transformed)
## evaluated_psfs = WF.evaluate_psf(stamps_transformed, misalignment=wf_misalignment)
## # make sure evaluated_psfs has the right index
## evaluated_psfs.index = eval_data.index
## # combine the results from PSF_Evaluator with your input data
## combined_df_trans = evaluated_psfs.combine_first(eval_data)
## e1 = combined_df['e1']
## e2 = combined_df['e2']
## e1_t = combined_df_trans['e1']
## e2_t = combined_df_trans['e2']
## print((e1 - e1_t) / (results['e1']))
## print((e2 - e2_t) / (results['e2']))
return combined_df, stamps, data_stamps