def bond_deviations_weighted(self):
if(self.n_bond_proxies is not None):
bond_deltas = self.bond_proxies.deltas(
sites_cart=self.sites_cart, origin_id=0)
if len(bond_deltas) >0:
sigmas = flex.double([geometry_restraints.weight_as_sigma(x.weight) for x in self.bond_proxies.simple])
sigma_mean = flex.mean_default(sigmas, 0)
z_scores = flex.double([(bond_delta/sigma*sigma_mean) for bond_delta,sigma in zip(bond_deltas,sigmas)])
b_rmsz = math.sqrt(flex.mean_default(z_scores*z_scores,0))
b_z_max = flex.max_default(flex.abs(z_scores), 0)
b_z_min = flex.min_default(flex.abs(z_scores), 0)
return b_z_min, b_z_max, b_rmsz
else:
return 0,0,0
def angle_deviations_weighted(self):
if(self.n_angle_proxies is not None):
angle_deltas = self.angle_proxies.proxy_select(origin_id=0).deltas(
sites_cart=self.sites_cart)
if len(angle_deltas) > 0:
sigmas = flex.double([geometry_restraints.weight_as_sigma(x.weight) for x in self.angle_proxies])
sigma_mean = flex.mean_default(sigmas, 0)
z_scores = flex.double([(angle_delta/sigma*sigma_mean) for angle_delta,sigma in zip(angle_deltas,sigmas)])
a_rmsz = math.sqrt(flex.mean_default(z_scores*z_scores,0))
a_z_max = flex.max_default(flex.abs(z_scores), 0)
a_z_min = flex.min_default(flex.abs(z_scores), 0)
return a_z_min, a_z_max, a_rmsz
else:
return 0,0,0
def bond_deviations_z(self):
'''
Calculate rmsz of bond deviations
Compute rmsz, the Root-Mean-Square of the z-scors for a set of data
using z_i = {x_i - mu / sigma} and rmsz = sqrt(mean(z*z))
x_i: atcual bond length
mu: geometry restraints mean
sigma: geometry restraints standard deviation
z_i: z-score for bond i
z: array of z_i
The sigma and the (x_i - mu) are model constrains, geometry restraints.
This function extracts from self, not calculated from data.
:returns:
b_rmsz: rmsz, root mean square of the z-scors of all bonds
b_z_min/max: min/max abolute values of z-scors
'''
if(self.n_bond_proxies is not None):
bond_deltas = self.bond_proxies.deltas(
sites_cart=self.sites_cart, origin_id=0)
if len(bond_deltas) >0:
sigmas = [geometry_restraints.weight_as_sigma(x.weight) for x in self.bond_proxies.simple]
z_scores = flex.double([(bond_delta/sigma) for bond_delta,sigma in zip(bond_deltas,sigmas)])
b_rmsz = math.sqrt(flex.mean_default(z_scores*z_scores,0))
b_z_max = flex.max_default(flex.abs(z_scores), 0)
b_z_min = flex.min_default(flex.abs(z_scores), 0)
return b_z_min, b_z_max, b_rmsz
else:
return 0,0,0
def bond_deviations_z(self):
'''
Calculate rmsz of bond deviations
Compute rmsz, the Root-Mean-Square of the z-scors for a set of data
using z_i = {x_i - mu / sigma} and rmsz = sqrt(mean(z*z))
x_i: atcual bond length
mu: geometry restraints mean
sigma: geometry restraints standard deviation
z_i: z-score for bond i
z: array of z_i
The sigma and the (x_i - mu) are model constrains, geometry restraints. They function extracts
from self, not calculated from data.
:returns:
b_rmsz: rmsz, root mean square of the z-scors of all bonds
b_z_min/max: min/max abolute values of z-scors
'''
if(self.n_bond_proxies is not None):
bond_deltas = self.bond_proxies.deltas(
sites_cart=self.sites_cart, origin_id=0)
if len(bond_deltas) >0:
sigmas = [geometry_restraints.weight_as_sigma(x.weight) for x in self.bond_proxies.simple]
z_scores = flex.double([(bond_delta/sigma) for bond_delta,sigma in zip(bond_deltas,sigmas)])
b_rmsz = math.sqrt(flex.mean_default(z_scores*z_scores,0))
b_z_max = flex.max_default(flex.abs(z_scores), 0)
b_z_min = flex.min_default(flex.abs(z_scores), 0)
return b_z_min, b_z_max, b_rmsz
else:
return 0,0,0
def angle_deviations_z(self):
'''
Calculate rmsz of angles deviations
Compute rmsz, the Root-Mean-Square of the z-scors for a set of data
using z_i = {x_i - mu / sigma} and rmsz = sqrt(mean(z*z))
Compute rmsz, the Root-Mean-Square of the z-scors for a set of data
using z_i = {x_i - mu / sigma} and rmsz = sqrt(mean(z*z))
x_i: atcual bond angle
mu: geometry restraints mean
sigma: geometry restraints standard deviation
z_i: z-score for bond i
z: array of z_i
The sigma and the (x_i - mu) are model constrains, geometry restraints. They function extracts
from self, not calculated from data.
:returns:
a_rmsz: rmsz, root mean square of the z-scors of all angles
a_z_min/max: min/max values of z-scors
'''
if(self.n_angle_proxies is not None):
angle_deltas = self.angle_proxies.proxy_select(origin_id=0).deltas(
sites_cart=self.sites_cart)
if len(angle_deltas) > 0:
sigmas = [geometry_restraints.weight_as_sigma(x.weight) for x in self.angle_proxies]
z_scores = flex.double([(angle_delta/sigma) for angle_delta,sigma in zip(angle_deltas,sigmas)])
a_rmsz = math.sqrt(flex.mean_default(z_scores*z_scores,0))
a_z_max = flex.max_default(flex.abs(z_scores), 0)
a_z_min = flex.min_default(flex.abs(z_scores), 0)
return a_z_min, a_z_max, a_rmsz
else:
return 0,0,0
def angle_deviations_z(self):
'''
Calculate rmsz of angles deviations
Compute rmsz, the Root-Mean-Square of the z-scors for a set of data
using z_i = {x_i - mu / sigma} and rmsz = sqrt(mean(z*z))
Compute rmsz, the Root-Mean-Square of the z-scors for a set of data
using z_i = {x_i - mu / sigma} and rmsz = sqrt(mean(z*z))
x_i: atcual bond angle
mu: geometry restraints mean
sigma: geometry restraints standard deviation
z_i: z-score for bond i
z: array of z_i
The sigma and the (x_i - mu) are model constrains, geometry restraints. They function extracts
from self, not calculated from data.
:returns:
a_rmsz: rmsz, root mean square of the z-scors of all angles
a_z_min/max: min/max values of z-scors
'''
if(self.n_angle_proxies is not None):
angle_deltas = self.angle_proxies.proxy_select(origin_id=0).deltas(
sites_cart=self.sites_cart)
if len(angle_deltas) > 0:
sigmas = [geometry_restraints.weight_as_sigma(x.weight) for x in self.angle_proxies]
z_scores = flex.double([(angle_delta/sigma) for angle_delta,sigma in zip(angle_deltas,sigmas)])
a_rmsz = math.sqrt(flex.mean_default(z_scores*z_scores,0))
a_z_max = flex.max_default(flex.abs(z_scores), 0)
a_z_min = flex.min_default(flex.abs(z_scores), 0)
return a_z_min, a_z_max, a_rmsz
else:
return 0,0,0
def nonbonded_deviations(self):
if (self.n_nonbonded_proxies is not None):
nonbonded_deltas = self.nonbonded_distances()
r_sq = nonbonded_deltas * nonbonded_deltas
r_ave = math.sqrt(flex.mean_default(r_sq, 0))
r_max = math.sqrt(flex.max_default(r_sq, 0))
r_min = math.sqrt(flex.min_default(r_sq, 0))
return r_min, r_max, r_ave
def nonbonded_deviations(self):
if(self.n_nonbonded_proxies is not None):
nonbonded_deltas = self.nonbonded_distances()
r_sq = nonbonded_deltas * nonbonded_deltas
r_ave = math.sqrt(flex.mean_default(r_sq, 0))
r_max = math.sqrt(flex.max_default(r_sq, 0))
r_min = math.sqrt(flex.min_default(r_sq, 0))
return r_min, r_max, r_ave
def show(self, message):
print >> self.log, message
sol_sel = self.model.solvent_selection()
xrs_mac_h = self.model.get_xray_structure().select(~sol_sel)
xrs_sol_h = self.model.get_xray_structure().select(sol_sel)
hd_sol = self.model.get_hd_selection().select(sol_sel)
hd_mac = self.model.get_hd_selection().select(~sol_sel)
xrs_sol = xrs_sol_h.select(~hd_sol)
xrs_mac = xrs_mac_h.select(~hd_mac)
scat = xrs_sol.scatterers()
occ = scat.extract_occupancies()
b_isos = scat.extract_u_iso_or_u_equiv(
self.model.get_xray_structure().unit_cell()) * math.pi**2 * 8
smallest_distances = xrs_mac.closest_distances(
sites_frac = xrs_sol.sites_frac(),
distance_cutoff = self.find_peaks_params.map_next_to_model.\
max_model_peak_dist).smallest_distances
number = format_value("%-7d", scat.size())
b_min = format_value("%-7.2f", flex.min_default(b_isos, None))
b_max = format_value("%-7.2f", flex.max_default(b_isos, None))
b_ave = format_value("%-7.2f", flex.mean_default(b_isos, None))
bl_min = format_value("%-7.2f", self.params.b_iso_min).strip()
bl_max = format_value("%-7.2f", self.params.b_iso_max).strip()
o_min = format_value("%-7.2f", flex.min_default(occ, None))
o_max = format_value("%-7.2f", flex.max_default(occ, None))
ol_min = format_value("%-7.2f", self.params.occupancy_min).strip()
ol_max = format_value("%-7.2f", self.params.occupancy_max).strip()
d_min = format_value("%-7.2f",
flex.min_default(smallest_distances, None))
d_max = format_value("%-7.2f",
flex.max_default(smallest_distances, None))
dl_min = format_value(
"%-7.2f", self.find_peaks_params.map_next_to_model.
min_model_peak_dist).strip()
dl_max = format_value(
"%-7.2f", self.find_peaks_params.map_next_to_model.
max_model_peak_dist).strip()
ani_min = format_value(
"%-7.2f",
flex.min_default(scat.anisotropy(unit_cell=xrs_sol.unit_cell()),
None))
ani_min_l = format_value("%-7.2f", self.params.anisotropy_min).strip()
print >> self.log, " number = %s" % number
print >> self.log, " b_iso_min = %s (limit = %s)" % (b_min,
bl_min)
print >> self.log, " b_iso_max = %s (limit = %s)" % (b_max,
bl_max)
print >> self.log, " b_iso_mean = %s " % (b_ave)
print >> self.log, " anisotropy_min = %s (limit = %s)" % (ani_min,
ani_min_l)
print >> self.log, " occupancy_min = %s (limit = %s)" % (o_min,
ol_min)
print >> self.log, " occupancy_max = %s (limit = %s)" % (o_max,
ol_max)
print >> self.log, " dist_sol_mol_min = %s (limit = %s)" % (d_min,
dl_min)
print >> self.log, " dist_sol_mol_max = %s (limit = %s)" % (d_max,
dl_max)
def __init__(
self,
fmodel,
coeffs):
# XXX see f_model.py: duplication! Consolidate.
self.fmodel = fmodel
self.coeffs = coeffs
crystal_gridding = fmodel.f_obs().crystal_gridding(
d_min = self.fmodel.f_obs().d_min(),
resolution_factor = 1./3)
fft_map = miller.fft_map(
crystal_gridding = crystal_gridding,
fourier_coefficients = self.coeffs)
fft_map.apply_sigma_scaling()
map_data = fft_map.real_map_unpadded()
rho_atoms = flex.double()
for site_frac in self.fmodel.xray_structure.sites_frac():
rho_atoms.append(map_data.eight_point_interpolation(site_frac))
rho_mean = flex.mean_default(rho_atoms.select(rho_atoms>0.5), 0.5)
sel_exclude = rho_atoms > min(rho_mean/2., 1)
sites_cart = fmodel.xray_structure.sites_cart()
#
fft_map = miller.fft_map(
crystal_gridding = crystal_gridding,
fourier_coefficients = self.fmodel.f_model())
fft_map.apply_sigma_scaling()
map_data2 = fft_map.real_map_unpadded()
#
for i_seq, site_cart in enumerate(sites_cart):
selection = maptbx.grid_indices_around_sites(
unit_cell = self.coeffs.unit_cell(),
fft_n_real = map_data.focus(),
fft_m_real = map_data.all(),
sites_cart = flex.vec3_double([site_cart]),
site_radii = flex.double([1.5]))
cc = flex.linear_correlation(x=map_data.select(selection),
y=map_data2.select(selection)).coefficient()
if(cc<0.7): sel_exclude[i_seq] = False
#
del map_data, fft_map, rho_atoms
self.d_min = fmodel.f_obs().d_min()
cs = self.fmodel.f_obs().average_bijvoet_mates().complete_set(d_min=self.d_min)
self.complete_set = cs.array(data = flex.double(cs.indices().size(), 0))
self.xray_structure_cut = self.fmodel.xray_structure.select(sel_exclude)
self.missing_set = self.complete_set.common_set(self.coeffs)
#
self.f_calc_missing = self.complete_set.structure_factors_from_scatterers(
xray_structure = self.xray_structure_cut).f_calc()
self.ss_missing = 1./flex.pow2(self.f_calc_missing.d_spacings().data()) / 4.
mask_manager = mmtbx.masks.manager(
miller_array = self.f_calc_missing,
miller_array_twin = None,
mask_params = None)
self.f_mask_missing = mask_manager.shell_f_masks(
xray_structure = self.xray_structure_cut,
force_update = True)
self.zero_data = flex.complex_double(self.f_calc_missing.data().size(), 0)
def chirality_deviations(self):
if (self.n_chirality_proxies is not None):
chirality_deltas = geometry_restraints.chirality_deltas(
sites_cart=self.sites_cart, proxies=self.chirality_proxies)
c_sq = chirality_deltas * chirality_deltas
c_ave = math.sqrt(flex.mean_default(c_sq, 0))
c_max = math.sqrt(flex.max_default(c_sq, 0))
c_min = math.sqrt(flex.min_default(c_sq, 0))
return c_min, c_max, c_ave
def __init__(
self,
fmodel,
coeffs):
# XXX see f_model.py: duplication! Consolidate.
self.fmodel = fmodel
self.coeffs = coeffs
crystal_gridding = fmodel.f_obs().crystal_gridding(
d_min = self.fmodel.f_obs().d_min(),
resolution_factor = 1./3)
fft_map = miller.fft_map(
crystal_gridding = crystal_gridding,
fourier_coefficients = self.coeffs)
fft_map.apply_sigma_scaling()
map_data = fft_map.real_map_unpadded()
rho_atoms = flex.double()
for site_frac in self.fmodel.xray_structure.sites_frac():
rho_atoms.append(map_data.eight_point_interpolation(site_frac))
rho_mean = flex.mean_default(rho_atoms.select(rho_atoms>0.5), 0.5)
sel_exclude = rho_atoms > min(rho_mean/2., 1)
sites_cart = fmodel.xray_structure.sites_cart()
#
fft_map = miller.fft_map(
crystal_gridding = crystal_gridding,
fourier_coefficients = self.fmodel.f_model())
fft_map.apply_sigma_scaling()
map_data2 = fft_map.real_map_unpadded()
#
for i_seq, site_cart in enumerate(sites_cart):
selection = maptbx.grid_indices_around_sites(
unit_cell = self.coeffs.unit_cell(),
fft_n_real = map_data.focus(),
fft_m_real = map_data.all(),
sites_cart = flex.vec3_double([site_cart]),
site_radii = flex.double([1.5]))
cc = flex.linear_correlation(x=map_data.select(selection),
y=map_data2.select(selection)).coefficient()
if(cc<0.7): sel_exclude[i_seq] = False
#
del map_data, fft_map, rho_atoms
self.d_min = fmodel.f_obs().d_min()
cs = self.fmodel.f_obs().average_bijvoet_mates().complete_set(d_min=self.d_min)
self.complete_set = cs.array(data = flex.double(cs.indices().size(), 0))
self.xray_structure_cut = self.fmodel.xray_structure.select(sel_exclude)
self.missing_set = self.complete_set.common_set(self.coeffs)
#
self.f_calc_missing = self.complete_set.structure_factors_from_scatterers(
xray_structure = self.xray_structure_cut).f_calc()
self.ss_missing = 1./flex.pow2(self.f_calc_missing.d_spacings().data()) / 4.
mask_manager = mmtbx.masks.manager(
miller_array = self.f_calc_missing,
miller_array_twin = None,
mask_params = None)
self.f_mask_missing = mask_manager.shell_f_masks(
xray_structure = self.xray_structure_cut,
force_update = True)
self.zero_data = flex.complex_double(self.f_calc_missing.data().size(), 0)
def isotropic_adp_deviation(self):
if (self.n_isotropic_adp_proxies is not None):
isotropic_adp_deltas_rms = adp_restraints.isotropic_adp_deltas_rms(
u_cart=self.u_cart, proxies=self.isotropic_adp_proxies)
i_sq = isotropic_adp_deltas_rms * isotropic_adp_deltas_rms
i_ave = math.sqrt(flex.mean_default(i_sq, 0))
i_max = math.sqrt(flex.max_default(i_sq, 0))
i_min = math.sqrt(flex.min_default(i_sq, 0))
return i_min, i_max, i_ave
def parallelity_deviations(self):
if self.n_parallelity_proxies is not None:
parallelity_deltas = geometry_restraints.parallelity_deltas(
sites_cart=self.sites_cart, proxies=self.parallelity_proxies)
p_sq = parallelity_deltas * parallelity_deltas
p_ave = math.sqrt(flex.mean_default(p_sq, 0))
p_max = math.sqrt(flex.max_default(p_sq, 0))
p_min = math.sqrt(flex.min_default(p_sq, 0))
return p_min, p_max, p_ave
def _need_update_mask(self, sites_cart_new):
if(self.sites_cart is not None and
self.sites_cart.size() != sites_cart_new.size()): return True
if(self.sites_cart is not None):
atom_atom_distances = flex.sqrt((sites_cart_new - self.sites_cart).dot())
mean_shift = flex.mean_default(atom_atom_distances,0)
if(mean_shift > self.mask_params.mean_shift_for_mask_update):
return True
else: return False
else: return True
def isotropic_adp_deviation(self):
if (self.n_isotropic_adp_proxies is not None):
isotropic_adp_deltas_rms = adp_restraints.isotropic_adp_deltas_rms(
u_cart=self.u_cart,
proxies=self.isotropic_adp_proxies)
i_sq = isotropic_adp_deltas_rms * isotropic_adp_deltas_rms
i_ave = math.sqrt(flex.mean_default(i_sq, 0))
i_max = math.sqrt(flex.max_default(i_sq, 0))
i_min = math.sqrt(flex.min_default(i_sq, 0))
return i_min, i_max, i_ave
def _need_update_mask(self, sites_cart_new):
if(self.sites_cart is not None and
self.sites_cart.size() != sites_cart_new.size()): return True
if(self.sites_cart is not None):
atom_atom_distances = flex.sqrt((sites_cart_new - self.sites_cart).dot())
mean_shift = flex.mean_default(atom_atom_distances,0)
if(mean_shift > self.mask_params.mean_shift_for_mask_update):
return True
else: return False
else: return True
def chirality_deviations(self):
if(self.n_chirality_proxies is not None):
chirality_deltas = geometry_restraints.chirality_deltas(
sites_cart = self.sites_cart,
proxies = self.chirality_proxies)
c_sq = chirality_deltas * chirality_deltas
c_ave = math.sqrt(flex.mean_default(c_sq, 0))
c_max = math.sqrt(flex.max_default(c_sq, 0))
c_min = math.sqrt(flex.min_default(c_sq, 0))
return c_min, c_max, c_ave
def parallelity_deviations(self):
if self.n_parallelity_proxies is not None:
parallelity_deltas = geometry_restraints.parallelity_deltas(
sites_cart = self.sites_cart,
proxies = self.parallelity_proxies)
p_sq = parallelity_deltas * parallelity_deltas
p_ave = math.sqrt(flex.mean_default(p_sq, 0))
p_max = math.sqrt(flex.max_default(p_sq, 0))
p_min = math.sqrt(flex.min_default(p_sq, 0))
return p_min, p_max, p_ave
def dihedral_deviations(self):
# !!!XXX!!! Warning! this works wrong because it is not aware of origin_id!
if (self.n_dihedral_proxies is not None):
dihedral_deltas = geometry_restraints.dihedral_deltas(
sites_cart=self.sites_cart, proxies=self.dihedral_proxies)
d_sq = dihedral_deltas * dihedral_deltas
d_ave = math.sqrt(flex.mean_default(d_sq, 0))
d_max = math.sqrt(flex.max_default(d_sq, 0))
d_min = math.sqrt(flex.min_default(d_sq, 0))
return d_min, d_max, d_ave
def rigid_bond_deviation(self):
if (self.n_rigid_bond_proxies is not None):
rigid_bond_deltas = adp_restraints.rigid_bond_deltas(
sites_cart=self.sites_cart,
u_cart=self.u_cart,
proxies=self.rigid_bond_proxies)
r_sq = rigid_bond_deltas * rigid_bond_deltas
r_ave = math.sqrt(flex.mean_default(r_sq, 0))
r_max = math.sqrt(flex.max_default(r_sq, 0))
r_min = math.sqrt(flex.min_default(r_sq, 0))
return r_min, r_max, r_ave
def planarity_deviations(self):
# XXX Need update, does not respect origin_id
# assert 0, "Not counting for origin_id"
if (self.n_planarity_proxies is not None):
planarity_deltas = geometry_restraints.planarity_deltas_rms(
sites_cart=self.sites_cart, proxies=self.planarity_proxies)
p_sq = planarity_deltas * planarity_deltas
p_ave = math.sqrt(flex.mean_default(p_sq, 0))
p_max = math.sqrt(flex.max_default(p_sq, 0))
p_min = math.sqrt(flex.min_default(p_sq, 0))
return p_min, p_max, p_ave
def rigid_bond_deviation(self):
if (self.n_rigid_bond_proxies is not None):
rigid_bond_deltas = adp_restraints.rigid_bond_deltas(
sites_cart=self.sites_cart,
u_cart=self.u_cart,
proxies=self.rigid_bond_proxies)
r_sq = rigid_bond_deltas * rigid_bond_deltas
r_ave = math.sqrt(flex.mean_default(r_sq, 0))
r_max = math.sqrt(flex.max_default(r_sq, 0))
r_min = math.sqrt(flex.min_default(r_sq, 0))
return r_min, r_max, r_ave
def reference_dihedral_deviations(self):
assert 0, "Not working"
if (self.n_reference_dihedral_proxies is not None):
reference_dihedral_deltas = geometry_restraints.reference_dihedral_deltas(
sites_cart=self.sites_cart,
proxies=self.reference_dihedral_proxies)
d_sq = reference_dihedral_deltas * reference_dihedral_deltas
d_ave = math.sqrt(flex.mean_default(d_sq, 0))
d_max = math.sqrt(flex.max_default(d_sq, 0))
d_min = math.sqrt(flex.min_default(d_sq, 0))
return d_min, d_max, d_ave
def dihedral_deviations(self):
# !!!XXX!!! Warnign! this works wrong because it is not aware of origin_id!
if(self.n_dihedral_proxies is not None):
dihedral_deltas = geometry_restraints.dihedral_deltas(
sites_cart = self.sites_cart,
proxies = self.dihedral_proxies)
d_sq = dihedral_deltas * dihedral_deltas
d_ave = math.sqrt(flex.mean_default(d_sq, 0))
d_max = math.sqrt(flex.max_default(d_sq, 0))
d_min = math.sqrt(flex.min_default(d_sq, 0))
return d_min, d_max, d_ave
def dihedral_deviations(self):
if (self.n_dihedral_proxies is not None):
covalent_dihedrals = self.dihedral_proxies.proxy_select(
origin_id=0)
dihedral_deltas = geometry_restraints.dihedral_deltas(
sites_cart=self.sites_cart, proxies=covalent_dihedrals)
d_sq = dihedral_deltas * dihedral_deltas
d_ave = math.sqrt(flex.mean_default(d_sq, 0))
d_max = math.sqrt(flex.max_default(d_sq, 0))
d_min = math.sqrt(flex.min_default(d_sq, 0))
return d_min, d_max, d_ave
def reference_dihedral_deviations(self):
assert 0, "Not working"
if(self.n_reference_dihedral_proxies is not None):
reference_dihedral_deltas = geometry_restraints.reference_dihedral_deltas(
sites_cart = self.sites_cart,
proxies = self.reference_dihedral_proxies)
d_sq = reference_dihedral_deltas * reference_dihedral_deltas
d_ave = math.sqrt(flex.mean_default(d_sq, 0))
d_max = math.sqrt(flex.max_default(d_sq, 0))
d_min = math.sqrt(flex.min_default(d_sq, 0))
return d_min, d_max, d_ave
def angle_deviations(self):
if (self.n_angle_proxies is not None):
angle_deltas = self.angle_proxies.proxy_select(origin_id=0).deltas(
sites_cart=self.sites_cart)
if len(angle_deltas) > 0:
a_sq = angle_deltas * angle_deltas
a_ave = math.sqrt(flex.mean_default(a_sq, 0))
a_max = math.sqrt(flex.max_default(a_sq, 0))
a_min = math.sqrt(flex.min_default(a_sq, 0))
return a_min, a_max, a_ave
else:
return 0, 0, 0
def bond_deviations(self):
if (self.n_bond_proxies is not None):
bond_deltas = self.bond_proxies.deltas(sites_cart=self.sites_cart,
origin_id=0)
if len(bond_deltas) > 0:
b_sq = bond_deltas * bond_deltas
b_ave = math.sqrt(flex.mean_default(b_sq, 0))
b_max = math.sqrt(flex.max_default(b_sq, 0))
b_min = math.sqrt(flex.min_default(b_sq, 0))
return b_min, b_max, b_ave
else:
return 0, 0, 0
def planarity_deviations(self):
# XXX Need update, does not respect origin_id
# assert 0, "Not counting for origin_id"
if(self.n_planarity_proxies is not None):
planarity_deltas = geometry_restraints.planarity_deltas_rms(
sites_cart = self.sites_cart,
proxies = self.planarity_proxies)
p_sq = planarity_deltas * planarity_deltas
p_ave = math.sqrt(flex.mean_default(p_sq, 0))
p_max = math.sqrt(flex.max_default(p_sq, 0))
p_min = math.sqrt(flex.min_default(p_sq, 0))
return p_min, p_max, p_ave
def adp_similarity_deviation(self):
if (self.n_adp_similarity_proxies is not None):
adp_similarity_deltas_rms = adp_restraints.adp_similarity_deltas_rms(
u_cart=self.u_cart,
u_iso=self.u_iso,
use_u_aniso=self.use_u_aniso,
proxies=self.adp_similarity_proxies)
a_sq = adp_similarity_deltas_rms * adp_similarity_deltas_rms
a_ave = math.sqrt(flex.mean_default(a_sq, 0))
a_max = math.sqrt(flex.max_default(a_sq, 0))
a_min = math.sqrt(flex.min_default(a_sq, 0))
return a_min, a_max, a_ave
def angle_deviations(self):
if(self.n_angle_proxies is not None):
angle_deltas = self.angle_proxies.proxy_select(origin_id=0).deltas(
sites_cart=self.sites_cart)
if len(angle_deltas) > 0:
a_sq = angle_deltas * angle_deltas
a_ave = math.sqrt(flex.mean_default(a_sq, 0))
a_max = math.sqrt(flex.max_default(a_sq, 0))
a_min = math.sqrt(flex.min_default(a_sq, 0))
return a_min, a_max, a_ave
else:
return 0,0,0
def bond_deviations(self):
if(self.n_bond_proxies is not None):
bond_deltas = self.bond_proxies.deltas(
sites_cart=self.sites_cart, origin_id=0)
if len(bond_deltas) >0:
b_sq = bond_deltas * bond_deltas
b_ave = math.sqrt(flex.mean_default(b_sq, 0))
b_max = math.sqrt(flex.max_default(b_sq, 0))
b_min = math.sqrt(flex.min_default(b_sq, 0))
return b_min, b_max, b_ave
else:
return 0,0,0
def adp_similarity_deviation(self):
if (self.n_adp_similarity_proxies is not None):
adp_similarity_deltas_rms = adp_restraints.adp_similarity_deltas_rms(
u_cart=self.u_cart,
u_iso=self.u_iso,
use_u_aniso=self.use_u_aniso,
proxies=self.adp_similarity_proxies)
a_sq = adp_similarity_deltas_rms * adp_similarity_deltas_rms
a_ave = math.sqrt(flex.mean_default(a_sq, 0))
a_max = math.sqrt(flex.max_default(a_sq, 0))
a_min = math.sqrt(flex.min_default(a_sq, 0))
return a_min, a_max, a_ave
def r_work_and_completeness_in_resolution_bins(fmodel,
reflections_per_bin=500,
out=None,
prefix=""):
if (out is None): out = sys.stdout
from mmtbx import bulk_solvent
from cctbx.array_family import flex
fo_w = fmodel.f_obs_work()
fc_w = fmodel.f_model_scaled_with_k1_w()
reflections_per_bin = min(reflections_per_bin, fo_w.data().size())
fo_w.setup_binner(reflections_per_bin=reflections_per_bin)
fc_w.use_binning_of(fo_w)
result = []
for i_bin in fo_w.binner().range_used():
sel_w = fo_w.binner().selection(i_bin)
sel_all = fo_w.binner().selection(i_bin)
sel_fo_all = fo_w.select(sel_all)
sel_fo_w = fo_w.select(sel_w)
sel_fc_w = fc_w.select(sel_w)
d_max_, d_min_ = sel_fo_all.d_max_min()
completeness = sel_fo_all.completeness(d_max=d_max_)
d_range = fo_w.binner().bin_legend(i_bin=i_bin,
show_bin_number=False,
show_counts=False)
s_fo_w_d = sel_fo_w.data()
s_fc_w_d = sel_fc_w.data()
assert s_fo_w_d.size() == s_fc_w_d.size()
s_fc_w_d_a = flex.abs(s_fc_w_d)
if (s_fo_w_d.size() > 0):
bin = resolution_bin(
i_bin=i_bin,
d_range=d_range,
completeness=completeness,
r_work=bulk_solvent.r_factor(s_fo_w_d, s_fc_w_d, 1),
n_work=sel_fo_w.data().size(),
scale_k1_work=_scale_helper(num=s_fo_w_d, den=s_fc_w_d_a),
mean_f_obs=flex.mean_default(sel_fo_all.data(), None))
result.append(bin)
print(prefix +
" Bin Resolution Range Compl. Nwork Rwork Scale <Fobs>",
file=out)
for bin in result:
fmt = " %s %s %s %s %s %s %s"
print(
prefix + fmt %
(format_value("%3d", bin.i_bin), format_value(
"%-17s", bin.d_range), format_value("%4.2f", bin.completeness),
format_value("%8d", bin.n_work), format_value(
"%6.4f", bin.r_work), format_value("%6.4f",
bin.scale_k1_work),
format_value("%10.3f", bin.mean_f_obs)),
file=out)
def add_new_solvent(self):
if (self.params.b_iso is None):
sol_sel = self.model.solvent_selection()
xrs_mac_h = self.model.get_xray_structure().select(~sol_sel)
hd_mac = self.model.get_hd_selection().select(~sol_sel)
xrs_mac = xrs_mac_h.select(~hd_mac)
b = xrs_mac.extract_u_iso_or_u_equiv() * math.pi**2 * 8
b_solv = flex.mean_default(b, None)
if (b_solv is not None and b_solv < self.params.b_iso_min
or b_solv > self.params.b_iso_max):
b_solv = (self.params.b_iso_min + self.params.b_iso_max) / 2.
else:
b_solv = self.params.b_iso
if (self.params.new_solvent == "isotropic"):
new_scatterers = flex.xray_scatterer(
self.sites.size(),
xray.scatterer(occupancy=self.params.occupancy,
b=b_solv,
scattering_type=self.params.scattering_type))
elif (self.params.new_solvent == "anisotropic"):
u_star = adptbx.u_iso_as_u_star(
self.model.get_xray_structure().unit_cell(),
adptbx.b_as_u(b_solv))
new_scatterers = flex.xray_scatterer(
self.sites.size(),
xray.scatterer(occupancy=self.params.occupancy,
u=u_star,
scattering_type=self.params.scattering_type))
else:
raise RuntimeError
new_scatterers.set_sites(self.sites)
solvent_xray_structure = xray.structure(
special_position_settings=self.model.get_xray_structure(),
scatterers=new_scatterers)
xrs_sol = self.model.get_xray_structure().select(
self.model.solvent_selection())
xrs_mac = self.model.get_xray_structure().select(
~self.model.solvent_selection())
xrs_sol = xrs_sol.concatenate(other=solvent_xray_structure)
sol_sel = flex.bool(xrs_mac.scatterers().size(), False)
sol_sel.extend(flex.bool(xrs_sol.scatterers().size(), True))
self.model.add_solvent(
solvent_xray_structure=solvent_xray_structure,
residue_name=self.params.output_residue_name,
atom_name=self.params.output_atom_name,
chain_id=self.params.output_chain_id,
refine_occupancies=self.params.refine_occupancies,
refine_adp=self.params.new_solvent)
self.fmodel.update_xray_structure(
xray_structure=self.model.get_xray_structure(), update_f_calc=True)
def add_new_solvent(self):
if(self.params.b_iso is None):
sol_sel = self.model.solvent_selection()
xrs_mac_h = self.model.xray_structure.select(~sol_sel)
hd_mac = self.model.xray_structure.hd_selection().select(~sol_sel)
xrs_mac = xrs_mac_h.select(~hd_mac)
b = xrs_mac.extract_u_iso_or_u_equiv() * math.pi**2*8
b_solv = flex.mean_default(b, None)
if(b_solv is not None and b_solv < self.params.b_iso_min or
b_solv > self.params.b_iso_max):
b_solv = (self.params.b_iso_min + self.params.b_iso_max) / 2.
else:
b_solv = self.params.b_iso
if(self.params.new_solvent == "isotropic"):
new_scatterers = flex.xray_scatterer(
self.sites.size(),
xray.scatterer(occupancy = self.params.occupancy,
b = b_solv,
scattering_type = self.params.scattering_type))
elif(self.params.new_solvent == "anisotropic"):
u_star = adptbx.u_iso_as_u_star(self.model.xray_structure.unit_cell(),
adptbx.b_as_u(b_solv))
new_scatterers = flex.xray_scatterer(
self.sites.size(),
xray.scatterer(
occupancy = self.params.occupancy,
u = u_star,
scattering_type = self.params.scattering_type))
else: raise RuntimeError
new_scatterers.set_sites(self.sites)
solvent_xray_structure = xray.structure(
special_position_settings = self.model.xray_structure,
scatterers = new_scatterers)
xrs_sol = self.model.xray_structure.select(self.model.solvent_selection())
xrs_mac = self.model.xray_structure.select(~self.model.solvent_selection())
xrs_sol = xrs_sol.concatenate(other = solvent_xray_structure)
sol_sel = flex.bool(xrs_mac.scatterers().size(), False)
sol_sel.extend( flex.bool(xrs_sol.scatterers().size(), True) )
self.model.add_solvent(
solvent_xray_structure = solvent_xray_structure,
residue_name = self.params.output_residue_name,
atom_name = self.params.output_atom_name,
chain_id = self.params.output_chain_id,
refine_occupancies = self.params.refine_occupancies,
refine_adp = self.params.new_solvent)
self.fmodel.update_xray_structure(
xray_structure = self.model.xray_structure,
update_f_calc = True)
def get_mean_side_chain_density_value_residue(residue, map_data, unit_cell):
results = flex.double()
get_class = iotbx.pdb.common_residue_names_get_class
main_chain = ["N", "CA", "CB", "C", "O"]
if (get_class(residue.resname) != "common_amino_acid"): return None
sites_cart = flex.vec3_double()
atoms = residue.atoms()
for a in atoms:
if (a.name.strip() in main_chain): continue
sites_cart.append(a.xyz)
if (sites_cart.size() == 0): return None
mv = maptbx.real_space_target_simple(unit_cell=unit_cell,
density_map=map_data,
sites_cart=sites_cart)
results.append(mv)
return flex.mean_default(results, 0)
def r_work_and_completeness_in_resolution_bins(fmodel, reflections_per_bin=500,
out = None, prefix=""):
if(out is None): out = sys.stdout
from mmtbx import bulk_solvent
from cctbx.array_family import flex
fo_w = fmodel.f_obs_work()
fc_w = fmodel.f_model_scaled_with_k1_w()
reflections_per_bin = min(reflections_per_bin, fo_w.data().size())
fo_w.setup_binner(reflections_per_bin = reflections_per_bin)
fc_w.use_binning_of(fo_w)
result = []
for i_bin in fo_w.binner().range_used():
sel_w = fo_w.binner().selection(i_bin)
sel_all = fo_w.binner().selection(i_bin)
sel_fo_all = fo_w.select(sel_all)
sel_fo_w = fo_w.select(sel_w)
sel_fc_w = fc_w.select(sel_w)
d_max_,d_min_ = sel_fo_all.d_max_min()
completeness = sel_fo_all.completeness(d_max = d_max_)
d_range = fo_w.binner().bin_legend(
i_bin=i_bin, show_bin_number=False, show_counts=False)
s_fo_w_d = sel_fo_w.data()
s_fc_w_d = sel_fc_w.data()
assert s_fo_w_d.size() == s_fc_w_d.size()
s_fc_w_d_a = flex.abs(s_fc_w_d)
if(s_fo_w_d.size() > 0):
bin = resolution_bin(
i_bin = i_bin,
d_range = d_range,
completeness = completeness,
r_work = bulk_solvent.r_factor(s_fo_w_d, s_fc_w_d, 1),
n_work = sel_fo_w.data().size(),
scale_k1_work= _scale_helper(num=s_fo_w_d, den=s_fc_w_d_a),
mean_f_obs = flex.mean_default(sel_fo_all.data(),None))
result.append(bin)
print >> out,\
prefix+" Bin Resolution Range Compl. Nwork Rwork Scale <Fobs>"
for bin in result:
fmt = " %s %s %s %s %s %s %s"
print >> out,prefix+fmt%(
format_value("%3d", bin.i_bin),
format_value("%-17s", bin.d_range),
format_value("%4.2f", bin.completeness),
format_value("%8d", bin.n_work),
format_value("%6.4f", bin.r_work),
format_value("%6.4f", bin.scale_k1_work),
format_value("%10.3f", bin.mean_f_obs))
def show(self, message):
print >> self.log, message
sol_sel = self.model.solvent_selection()
xrs_mac_h = self.model.xray_structure.select(~sol_sel)
xrs_sol_h = self.model.xray_structure.select(sol_sel)
hd_sol = self.model.xray_structure.hd_selection().select(sol_sel)
hd_mac = self.model.xray_structure.hd_selection().select(~sol_sel)
xrs_sol = xrs_sol_h.select(~hd_sol)
xrs_mac = xrs_mac_h.select(~hd_mac)
scat = xrs_sol.scatterers()
occ = scat.extract_occupancies()
b_isos = scat.extract_u_iso_or_u_equiv(
self.model.xray_structure.unit_cell()) * math.pi**2*8
smallest_distances = xrs_mac.closest_distances(
sites_frac = xrs_sol.sites_frac(),
distance_cutoff = self.find_peaks_params.map_next_to_model.\
max_model_peak_dist).smallest_distances
number = format_value("%-7d",scat.size())
b_min = format_value("%-7.2f", flex.min_default( b_isos, None))
b_max = format_value("%-7.2f", flex.max_default( b_isos, None))
b_ave = format_value("%-7.2f", flex.mean_default(b_isos, None))
bl_min = format_value("%-7.2f", self.params.b_iso_min).strip()
bl_max = format_value("%-7.2f", self.params.b_iso_max).strip()
o_min = format_value("%-7.2f", flex.min_default(occ, None))
o_max = format_value("%-7.2f", flex.max_default(occ, None))
ol_min = format_value("%-7.2f", self.params.occupancy_min).strip()
ol_max = format_value("%-7.2f", self.params.occupancy_max).strip()
d_min = format_value("%-7.2f", flex.min_default(smallest_distances, None))
d_max = format_value("%-7.2f", flex.max_default(smallest_distances, None))
dl_min = format_value("%-7.2f",
self.find_peaks_params.map_next_to_model.min_model_peak_dist).strip()
dl_max = format_value("%-7.2f",
self.find_peaks_params.map_next_to_model.max_model_peak_dist).strip()
ani_min = format_value("%-7.2f", flex.min_default(scat.anisotropy(
unit_cell = xrs_sol.unit_cell()), None))
ani_min_l = format_value("%-7.2f",self.params.anisotropy_min).strip()
print >>self.log," number = %s"%number
print >>self.log," b_iso_min = %s (limit = %s)"%(b_min, bl_min)
print >>self.log," b_iso_max = %s (limit = %s)"%(b_max, bl_max)
print >>self.log," b_iso_mean = %s "%(b_ave)
print >>self.log," anisotropy_min = %s (limit = %s)"%(ani_min,ani_min_l)
print >>self.log," occupancy_min = %s (limit = %s)"%(o_min, ol_min)
print >>self.log," occupancy_max = %s (limit = %s)"%(o_max, ol_max)
print >>self.log," dist_sol_mol_min = %s (limit = %s)"%(d_min, dl_min)
print >>self.log," dist_sol_mol_max = %s (limit = %s)"%(d_max, dl_max)
def load_refinement(self, ref, stats):
pdb_file = ref.replace('.dat', '.pdb')
pdb_io = pdb.input(file_name=pdb_file)
m_stats = self._stats()
self.model_stats = {
"r_work" : stats['r'],
"r_free" : stats['rfree'],
"adp_mean_all" : flex.mean_default(pdb_io.xray_structure_simple().extract_u_iso_or_u_equiv()*(math.pi**2*8), None),
"bond_rmsd" : m_stats[1][0],
"angle_rmsd" : m_stats[1][1],
"clashscore" : m_stats[0]
}
self.hist_data = polygon.output.get_basic_histogram_data(d_min=stats['res'])
self.renderer = pgn.wx_renderer(self.hist_data, self.model_stats)
self.polygon_panel = P8PolygonPanel(self, self.renderer)
self.polygon_panel.set_callback(self._on_click)
self.histogram = polygon_db_viewer.HistogramPlot(self, figure_size=(5,4), font_size=6, title_font_size=6)
col = wx.SystemSettings.GetColour(wx.SYS_COLOUR_BACKGROUND)
self.histogram.figure.patch.set_facecolor((col[0]/255.0, col[1]/255.0, col[2]/255.0))
self.histogram.show_histogram(data=self.hist_data[0][1],
n_bins=10,
reference_value=self.model_stats['r_work'],
xlabel='r_work')
self.pg_sizer = wx.BoxSizer(wx.VERTICAL)
self.pg_sizer.Add(self.histogram, 1, wx.ALL, 10)
self.pg_sizer.Add(self.draw_color_key())
self.sizer.Add(self.pg_sizer, 1, wx.EXPAND)
self.sizer.Add(self.polygon_panel, 2, wx.EXPAND, wx.ALL, 10)
self.sizer.Layout()
def get_mean_side_chain_density_value(hierarchy, map_data, unit_cell):
results = flex.double()
get_class = iotbx.pdb.common_residue_names_get_class
main_chain = ["N", "CA", "CB", "C", "O"]
for model in hierarchy.models():
for chain in model.chains():
for residue_group in chain.residue_groups():
conformers = residue_group.conformers()
if (len(conformers) > 1): continue
for conformer in residue_group.conformers():
residue = conformer.only_residue()
if (get_class(residue.resname) != "common_amino_acid"):
continue
sites_cart = flex.vec3_double()
atoms = residue.atoms()
for a in atoms:
if (a.name.strip() in main_chain): continue
sites_cart.append(a.xyz)
if (sites_cart.size() == 0): continue
mv = maptbx.real_space_target_simple(unit_cell=unit_cell,
density_map=map_data,
sites_cart=sites_cart)
results.append(mv)
return flex.mean_default(results, 0)
def prepare_target_map(self): # XXX This may need to go external
if (self.map_data is None): return None
map_data = self.map_data
# truncate map
selection = self.atom_selection_cache.selection(
string="element C or element O or element N")
mean_atom = flex.double()
for i_a, a in enumerate(list(self.pdb_hierarchy.atoms())):
if (selection[i_a]):
site_frac = self.crystal_symmetry.unit_cell().fractionalize(
a.xyz)
mean_atom.append(map_data.eight_point_interpolation(site_frac))
mean_atom = flex.mean_default(mean_atom, 0)
map_data = map_data.set_selected(map_data > mean_atom, mean_atom)
# Blend maps if applicable
if (self.diff_map_data is not None):
diff_map_data = self.diff_map_data.deep_copy()
sel = diff_map_data < 2.
diff_map_data = diff_map_data.set_selected(sel, 0)
sel = diff_map_data > 3.
diff_map_data = diff_map_data.set_selected(sel, 3)
diff_map_data = diff_map_data / 3.
maptbx.combine_1(map_data=map_data, diff_map=diff_map_data)
return map_data
def collect(self, model,
fmodel,
step,
wilson_b = None,
rigid_body_shift_accumulator = None):
global time_collect_and_process
t1 = time.time()
if(self.sites_cart_start is None):
self.sites_cart_start = model.xray_structure.sites_cart()
sites_cart_curr = model.xray_structure.sites_cart()
if(sites_cart_curr.size()==self.sites_cart_start.size()):
self.shifts.append(
flex.mean(flex.sqrt((self.sites_cart_start-sites_cart_curr).dot())))
else: self.shifts.append("n/a")
if(wilson_b is not None): self.wilson_b = wilson_b
self.steps.append(step)
self.r_works.append(fmodel.r_work())
self.r_frees.append(fmodel.r_free())
use_amber = False
if hasattr(self.params, "amber"): # loaded amber scope
use_amber = self.params.amber.use_amber
self.is_amber_monitor=use_amber
ignore_hd = True
if self.neutron_refinement or use_amber:
ignore_hd = False
use_afitt = False
if hasattr(self.params, "afitt"): # loaded amber scope
use_afitt = self.params.afitt.use_afitt
general_selection = None
if use_afitt:
from mmtbx.geometry_restraints import afitt
if 0:
general_selection = afitt.get_afitt_selection(model.restraints_manager,
model.xray_structure,
ignore_hd)
afitt_geom = model.geometry_statistics(
ignore_hd = ignore_hd,
cdl_restraints=self.params.pdb_interpretation.restraints_library.cdl,
general_selection=general_selection,
)
afitt_geom.show()
general_selection = afitt.get_non_afitt_selection(
model.restraints_manager,
model.xray_structure.sites_cart(),
model.xray_structure.hd_selection(),
ignore_hd)
geom = model.geometry_statistics(
ignore_hd = ignore_hd,
cdl_restraints=self.params.pdb_interpretation.restraints_library.cdl,
general_selection=general_selection,
)
if(geom is not None): self.geom.append(geom)
hd_sel = None
if(not self.neutron_refinement and not self.is_neutron_monitor):
hd_sel = model.xray_structure.hd_selection()
b_isos = model.xray_structure.extract_u_iso_or_u_equiv() * math.pi**2*8
if(hd_sel is not None): b_isos = b_isos.select(~hd_sel)
self.bs_iso_max_a.append(flex.max_default( b_isos, 0))
self.bs_iso_min_a.append(flex.min_default( b_isos, 0))
self.bs_iso_ave_a.append(flex.mean_default(b_isos, 0))
self.n_solv.append(model.number_of_ordered_solvent_molecules())
if (len(self.geom)>0 and
getattr(self.geom[0], "b", None) and
getattr(self.geom[0], "a", None)
):
if([self.bond_start,self.angle_start].count(None) == 2):
if(len(self.geom)>0):
self.bond_start = self.geom[0].b[2]
self.angle_start = self.geom[0].a[2]
if(len(self.geom)>0):
self.bond_final = self.geom[len(self.geom)-1].b[2]
self.angle_final = self.geom[len(self.geom)-1].a[2]
elif(len(self.geom)==1):
self.bond_final = self.geom[0].b[2]
self.angle_final = self.geom[0].a[2]
if(rigid_body_shift_accumulator is not None):
self.rigid_body_shift_accumulator = rigid_body_shift_accumulator
t2 = time.time()
time_collect_and_process += (t2 - t1)
self.call_back(model, fmodel, method=step)
def __init__(self,
map_data,
xray_structure,
pdb_hierarchy,
geometry_restraints_manager,
gradients_method="fd",
ncs_groups=None,
rms_bonds_limit=0.015,
rms_angles_limit=2.0,
real_space_gradients_delta=1. / 4,
max_iterations=100,
range_size=10,
n_ranges=10,
default_weight=50):
"""
Fast determination of optimal data/restraints weight for real-space refinement
of individual sites.
"""
self.msg_strings = []
# split chains into chunks
result = []
for model in pdb_hierarchy.models():
for chain in model.chains():
if (chain.is_protein() or chain.is_na()):
residue_range_sel = flex.size_t()
cntr = 0
for rg in chain.residue_groups():
i_seqs = rg.atoms().extract_i_seq()
cntr += 1
if (cntr < 10):
residue_range_sel.extend(i_seqs)
else:
result.append(residue_range_sel)
residue_range_sel = flex.size_t()
residue_range_sel.extend(i_seqs)
cntr = 0
if (len(result) == 0):
assert residue_range_sel.size() > 0
result.append(residue_range_sel)
self.msg_strings.append("number of chunks: %d" % len(result))
# randomly pick chunks
random_chunks = []
if (len(result) > 0):
for i in xrange(n_ranges):
random_chunks.append(random.choice(xrange(len(result))))
self.msg_strings.append("random chunks:" % random_chunks)
# setup refinery
xrs_dc = xray_structure.deep_copy_scatterers()
sel_all = flex.bool(xrs_dc.scatterers().size(), True)
grm_dc = geometry_restraints_manager.select(sel_all)
ro = mmtbx.refinement.real_space.individual_sites.box_refinement_manager(
xray_structure=xrs_dc,
target_map=map_data,
geometry_restraints_manager=grm_dc.geometry,
real_space_gradients_delta=real_space_gradients_delta,
max_iterations=max_iterations,
ncs_groups=ncs_groups,
gradients_method=gradients_method)
optimal_weights = flex.double()
# loop over chunks: determine best weight for each chunk
if (len(result) == 0):
random_chunks = [None]
for chunk in random_chunks:
if (chunk is None):
sel = flex.bool(xrs_dc.scatterers().size(), True)
else:
sel = result[chunk]
sel = flex.bool(xrs_dc.scatterers().size(), sel)
ro.refine(selection=sel,
rms_bonds_limit=rms_bonds_limit,
rms_angles_limit=rms_angles_limit)
self.msg_strings.append("chunk %s optimal weight: %9.4f" %
(str(chunk), ro.weight_optimal))
if (ro.weight_optimal is not None):
optimal_weights.append(ro.weight_optimal)
# select overall best weight
mean = flex.mean(optimal_weights)
sel = optimal_weights < mean * 3
sel &= optimal_weights > mean / 3
if (sel.count(True) > 0):
optimal_weights = optimal_weights.select(sel)
self.weight = flex.mean_default(optimal_weights, default_weight)
self.msg_strings.append("overall best weight: %9.4f" % self.weight)
def mmmd(self, values, eps = None):
if(eps is not None): values = values * eps
return flex.min_default(values, None), \
flex.max_default(values, None), \
flex.mean_default(values, None)
def ensemble_mean_geometry_stats(self,
restraints_manager,
xray_structure,
ensemble_xray_structures,
ignore_hd = True,
verbose = False,
out = None,
return_pdb_string = False):
if (out is None): out = sys.stdout
if verbose:
utils.print_header("Ensemble mean geometry statistics", out = out)
ensemble_size = len(ensemble_xray_structures)
print >> out, "Ensemble size : ", ensemble_size
# Dictionaries to store deltas
ensemble_bond_deltas = {}
ensemble_angle_deltas = {}
ensemble_chirality_deltas = {}
ensemble_planarity_deltas = {}
ensemble_dihedral_deltas = {}
# List to store rmsd of each model
structures_bond_rmsd = flex.double()
structures_angle_rmsd = flex.double()
structures_chirality_rmsd = flex.double()
structures_planarity_rmsd = flex.double()
structures_dihedral_rmsd = flex.double()
# Remove water and hd atoms from global restraints manager
selection = flex.bool()
for sc in xray_structure.scatterers():
if sc.label.find('HOH') > -1:
selection.append(True)
else:
selection.append(False)
if ignore_hd:
hd_selection = xray_structure.hd_selection()
assert hd_selection.size() == selection.size()
for n in xrange(hd_selection.size()):
if hd_selection[n] or selection[n]:
selection[n] = True
restraints_manager = restraints_manager.select(selection = ~selection)
# Get all deltas
for n, structure in enumerate(ensemble_xray_structures):
if verbose:
print >> out, "\nModel : ", n+1
sites_cart = structure.sites_cart()
# Remove water and hd atoms from individual structures sites cart
selection = flex.bool()
for sc in structure.scatterers():
if sc.label.find('HOH') > -1:
selection.append(True)
else:
selection.append(False)
if ignore_hd:
hd_selection = structure.hd_selection()
assert hd_selection.size() == selection.size()
for n in xrange(hd_selection.size()):
if hd_selection[n] or selection[n]:
selection[n] = True
sites_cart = sites_cart.select(~selection)
assert sites_cart is not None
site_labels = None
energies_sites = restraints_manager.energies_sites(
sites_cart = sites_cart,
compute_gradients = False)
# Rmsd of individual model
bond_rmsd = energies_sites.geometry.bond_deviations()[2]
angle_rmsd = energies_sites.geometry.angle_deviations()[2]
chirality_rmsd = energies_sites.geometry.chirality_deviations()[2]
planarity_rmsd = energies_sites.geometry.planarity_deviations()[2]
dihedral_rmsd = energies_sites.geometry.dihedral_deviations()[2]
structures_bond_rmsd.append(bond_rmsd)
structures_angle_rmsd.append(angle_rmsd)
structures_chirality_rmsd.append(chirality_rmsd)
structures_planarity_rmsd.append(planarity_rmsd)
structures_dihedral_rmsd.append(dihedral_rmsd)
if verbose:
print >> out, " Model RMSD"
print >> out, " bond : %.6g" % bond_rmsd
print >> out, " angle : %.6g" % angle_rmsd
print >> out, " chirality : %.6g" % chirality_rmsd
print >> out, " planarity : %.6g" % planarity_rmsd
print >> out, " dihedral : %.6g" % dihedral_rmsd
# Bond
pair_proxies = restraints_manager.geometry.pair_proxies(flags=None, sites_cart=sites_cart)
assert pair_proxies is not None
if verbose:
pair_proxies.bond_proxies.show_histogram_of_deltas(
sites_cart = sites_cart,
n_slots = 10,
f = out)
for proxy in pair_proxies.bond_proxies.simple:
bond_simple_proxy = geometry_restraints.bond(
sites_cart = sites_cart,
proxy = proxy)
if proxy.i_seqs in ensemble_bond_deltas:
ensemble_bond_deltas[proxy.i_seqs][0]+=bond_simple_proxy.delta
ensemble_bond_deltas[proxy.i_seqs][1]+=1
else:
ensemble_bond_deltas[proxy.i_seqs] = [bond_simple_proxy.delta, 1]
if verbose:
print >> out, "bond simple :", proxy.i_seqs
print >> out, " distance_ideal : %.6g" % proxy.distance_ideal
print >> out, " distance_model : %.6g" % bond_simple_proxy.distance_model
print >> out, " detla : %.6g" % bond_simple_proxy.delta
if (pair_proxies.bond_proxies.asu.size() > 0):
asu_mappings = pair_proxies.bond_proxies.asu_mappings()
for proxy in pair_proxies.bond_proxies.asu:
rt_mx = asu_mappings.get_rt_mx_ji(pair=proxy)
bond_asu_proxy = geometry_restraints.bond(
sites_cart = sites_cart,
asu_mappings = asu_mappings,
proxy = proxy)
proxy_i_seqs = (proxy.i_seq, proxy.j_seq)
if proxy_i_seqs in ensemble_bond_deltas:
ensemble_bond_deltas[proxy_i_seqs][0]+=bond_asu_proxy.delta
ensemble_bond_deltas[proxy_i_seqs][1]+=1
else:
ensemble_bond_deltas[proxy_i_seqs] = [bond_asu_proxy.delta, 1]
if verbose:
print >> out, "bond asu :", (proxy.i_seq, proxy.j_seq), rt_mx
print >> out, " distance_ideal : %.6g" % proxy.distance_ideal
print >> out, " distance_model : %.6g" % bond_asu_proxy.distance_model
print >> out, " delta : %.6g" % bond_asu_proxy.delta
# Angle
if verbose:
restraints_manager.geometry.angle_proxies.show_histogram_of_deltas(
sites_cart = sites_cart,
n_slots = 10,
f = out)
for proxy in restraints_manager.geometry.angle_proxies:
angle_proxy = geometry_restraints.angle(
sites_cart = sites_cart,
proxy = proxy)
if proxy.i_seqs in ensemble_angle_deltas:
ensemble_angle_deltas[proxy.i_seqs][0]+=angle_proxy.delta
ensemble_angle_deltas[proxy.i_seqs][1]+=1
else:
ensemble_angle_deltas[proxy.i_seqs] = [angle_proxy.delta, 1]
if verbose:
print >> out, "angle : ", proxy.i_seqs
print >> out, " angle_ideal : %.6g" % proxy.angle_ideal
print >> out, " angle_model : %.6g" % angle_proxy.angle_model
print >> out, " delta : %.6g" % angle_proxy.delta
# Chirality
if verbose:
restraints_manager.geometry.chirality_proxies.show_histogram_of_deltas(
sites_cart = sites_cart,
n_slots = 10,
f = out)
for proxy in restraints_manager.geometry.chirality_proxies:
chirality_proxy = geometry_restraints.chirality(
sites_cart = sites_cart,
proxy = proxy)
if proxy.i_seqs in ensemble_chirality_deltas:
ensemble_chirality_deltas[proxy.i_seqs][0]+=chirality_proxy.delta
ensemble_chirality_deltas[proxy.i_seqs][1]+=1
else:
ensemble_chirality_deltas[proxy.i_seqs] = [chirality_proxy.delta, 1]
if verbose:
print >> out, "chirality : ", proxy.i_seqs
print >> out, " chirality_ideal : %.6g" % proxy.volume_ideal
print >> out, " chirality_model : %.6g" % chirality_proxy.volume_model
print >> out, " chirality : %.6g" % chirality_proxy.delta
# Planarity
for proxy in restraints_manager.geometry.planarity_proxies:
planarity_proxy = geometry_restraints.planarity(
sites_cart = sites_cart,
proxy = proxy)
proxy_i_seqs = []
for i_seq in proxy.i_seqs:
proxy_i_seqs.append(i_seq)
proxy_i_seqs = tuple(proxy_i_seqs)
if proxy_i_seqs in ensemble_planarity_deltas:
ensemble_planarity_deltas[proxy_i_seqs][0]+=planarity_proxy.rms_deltas()
ensemble_planarity_deltas[proxy_i_seqs][1]+=1
else:
ensemble_planarity_deltas[proxy_i_seqs] = [planarity_proxy.rms_deltas(), 1]
if verbose:
print >> out, "planarity : ", proxy_i_seqs
print >> out, " planarity rms_deltas : %.6g" % planarity_proxy.rms_deltas()
# Dihedral
if verbose:
restraints_manager.geometry.dihedral_proxies.show_histogram_of_deltas(
sites_cart = sites_cart,
n_slots = 10,
f = out)
for proxy in restraints_manager.geometry.dihedral_proxies:
dihedral_proxy = geometry_restraints.dihedral(
sites_cart = sites_cart,
proxy = proxy)
if proxy.i_seqs in ensemble_dihedral_deltas:
ensemble_dihedral_deltas[proxy.i_seqs][0]+=dihedral_proxy.delta
ensemble_dihedral_deltas[proxy.i_seqs][1]+=1
else:
ensemble_dihedral_deltas[proxy.i_seqs] = [dihedral_proxy.delta, 1]
if verbose:
print >> out, "dihedral : ", proxy.i_seqs
print >> out, " dihedral_ideal : %.6g" % proxy.angle_ideal
print >> out, " periodicity : %.6g" % proxy.periodicity
print >> out, " dihedral_model : %.6g" % dihedral_proxy.angle_model
print >> out, " delta : %.6g" % dihedral_proxy.delta
# Calculate RMSDs for ensemble model
# Bond
mean_bond_delta = flex.double()
for proxy, info in ensemble_bond_deltas.iteritems():
assert info[1] == ensemble_size
mean_delta = info[0] / info[1]
mean_bond_delta.append(mean_delta)
bond_delta_sq = mean_bond_delta * mean_bond_delta
ensemble_bond_rmsd = math.sqrt(flex.mean_default(bond_delta_sq, 0))
# Angle
mean_angle_delta = flex.double()
for proxy, info in ensemble_angle_deltas.iteritems():
assert info[1] == ensemble_size
mean_delta = info[0] / info[1]
mean_angle_delta.append(mean_delta)
angle_delta_sq = mean_angle_delta * mean_angle_delta
ensemble_angle_rmsd = math.sqrt(flex.mean_default(angle_delta_sq, 0))
# Chirality
mean_chirality_delta = flex.double()
for proxy, info in ensemble_chirality_deltas.iteritems():
assert info[1] == ensemble_size
mean_delta = info[0] / info[1]
mean_chirality_delta.append(mean_delta)
chirality_delta_sq = mean_chirality_delta * mean_chirality_delta
ensemble_chirality_rmsd = math.sqrt(flex.mean_default(chirality_delta_sq, 0))
# Planarity
mean_planarity_delta = flex.double()
for proxy, info in ensemble_planarity_deltas.iteritems():
assert info[1] == ensemble_size
mean_delta = info[0] / info[1]
mean_planarity_delta.append(mean_delta)
planarity_delta_sq = mean_planarity_delta * mean_planarity_delta
ensemble_planarity_rmsd = math.sqrt(flex.mean_default(planarity_delta_sq, 0))
# Dihedral
mean_dihedral_delta = flex.double()
for proxy, info in ensemble_dihedral_deltas.iteritems():
assert info[1] == ensemble_size
mean_delta = info[0] / info[1]
mean_dihedral_delta.append(mean_delta)
dihedral_delta_sq = mean_dihedral_delta * mean_dihedral_delta
ensemble_dihedral_rmsd = math.sqrt(flex.mean_default(dihedral_delta_sq, 0))
# Calculate <structure rmsd>
assert ensemble_size == structures_bond_rmsd
assert ensemble_size == structures_angle_rmsd
assert ensemble_size == structures_chirality_rmsd
assert ensemble_size == structures_planarity_rmsd
assert ensemble_size == structures_dihedral_rmsd
structure_bond_rmsd_mean = structures_bond_rmsd.min_max_mean().mean
structure_angle_rmsd_mean = structures_angle_rmsd.min_max_mean().mean
structure_chirality_rmsd_mean = structures_chirality_rmsd.min_max_mean().mean
structure_planarity_rmsd_mean = structures_planarity_rmsd.min_max_mean().mean
structure_dihedral_rmsd_mean = structures_dihedral_rmsd.min_max_mean().mean
# Show summary
utils.print_header("Ensemble RMSD summary", out = out)
print >> out, " RMSD (mean delta per restraint)"
print >> out, " bond : %.6g" % ensemble_bond_rmsd
print >> out, " angle : %.6g" % ensemble_angle_rmsd
print >> out, " chirality : %.6g" % ensemble_chirality_rmsd
print >> out, " planarity : %.6g" % ensemble_planarity_rmsd
print >> out, " dihedral : %.6g" % ensemble_dihedral_rmsd
print >> out, " RMSD (mean RMSD per structure)"
print >> out, " bond : %.6g" % structure_bond_rmsd_mean
print >> out, " angle : %.6g" % structure_angle_rmsd_mean
print >> out, " chirality : %.6g" % structure_chirality_rmsd_mean
print >> out, " planarity : %.6g" % structure_planarity_rmsd_mean
print >> out, " dihedral : %.6g" % structure_dihedral_rmsd_mean
if ignore_hd:
print >> out, "\n Calculated excluding H/D"
else:
print >> out, "\n Calculated including H/D"
if return_pdb_string:
ens_geo_pdb_string = "REMARK 3"
ens_geo_pdb_string += "\nREMARK 3 NUMBER STRUCTURES IN ENSEMBLE : {0:5d}".format(ensemble_size)
if ignore_hd:
ens_geo_pdb_string += "\nREMARK 3 RMS DEVIATIONS FROM IDEAL VALUES (EXCLUDING H/D)"
else:
ens_geo_pdb_string += "\nREMARK 3 RMS DEVIATIONS FROM IDEAL VALUES (INCLUDING H/D)"
ens_geo_pdb_string += "\nREMARK 3 RMSD (MEAN DELTA PER RESTRAINT)"
ens_geo_pdb_string += "\nREMARK 3 BOND : {0:5.3f}".format(ensemble_bond_rmsd)
ens_geo_pdb_string += "\nREMARK 3 ANGLE : {0:5.3f}".format(ensemble_angle_rmsd)
ens_geo_pdb_string += "\nREMARK 3 CHIRALITY : {0:5.3f}".format(ensemble_chirality_rmsd)
ens_geo_pdb_string += "\nREMARK 3 PLANARITY : {0:5.3f}".format(ensemble_planarity_rmsd)
ens_geo_pdb_string += "\nREMARK 3 DIHEDRAL : {0:5.2f}".format(ensemble_dihedral_rmsd)
ens_geo_pdb_string += "\nREMARK 3 RMSD (MEAN RMSD PER STRUCTURE)"
ens_geo_pdb_string += "\nREMARK 3 BOND : {0:5.3f}".format(structure_bond_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3 ANGLE : {0:5.3f}".format(structure_angle_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3 CHIRALITY : {0:5.3f}".format(structure_chirality_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3 PLANARITY : {0:5.3f}".format(structure_planarity_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3 DIHEDRAL : {0:5.2f}".format(structure_dihedral_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3"
return ens_geo_pdb_string
def __init__(
self,
map_data,
xray_structure,
pdb_hierarchy,
geometry_restraints_manager,
ncs_groups=None,
rms_bonds_limit=0.015,
rms_angles_limit=2.0,
real_space_gradients_delta=1./4,
max_iterations = 100,
range_size=10,
n_ranges=10,
default_weight=50):
"""
Fast determination of optimal data/restraints weight for real-space refinement
of individual sites.
"""
self.msg_strings = []
# split chains into chunks
result = []
for model in pdb_hierarchy.models():
for chain in model.chains():
if(chain.is_protein() or chain.is_na()):
residue_range_sel = flex.size_t()
cntr = 0
for rg in chain.residue_groups():
i_seqs = rg.atoms().extract_i_seq()
cntr += 1
if(cntr<10):
residue_range_sel.extend(i_seqs)
else:
result.append(residue_range_sel)
residue_range_sel = flex.size_t()
residue_range_sel.extend(i_seqs)
cntr = 0
if(len(result)==0):
assert residue_range_sel.size()>0
result.append(residue_range_sel)
self.msg_strings.append("number of chunks: %d"%len(result))
# randomly pick chunks
random_chunks = []
if(len(result)>0):
for i in xrange(n_ranges):
random_chunks.append(random.choice(xrange(len(result))))
self.msg_strings.append("random chunks:"%random_chunks)
# setup refinery
xrs_dc = xray_structure.deep_copy_scatterers()
sel_all = flex.bool(xrs_dc.scatterers().size(), True)
grm_dc = geometry_restraints_manager.select(sel_all)
ro = mmtbx.refinement.real_space.individual_sites.box_refinement_manager(
xray_structure = xrs_dc,
target_map = map_data,
geometry_restraints_manager = grm_dc.geometry,
real_space_gradients_delta = real_space_gradients_delta,
max_iterations = max_iterations,
ncs_groups = ncs_groups)
optimal_weights = flex.double()
# loop over chunks: determine best weight for each chunk
if(len(result)==0):
random_chunks = [None]
for chunk in random_chunks:
if(chunk is None): sel = flex.bool(xrs_dc.scatterers().size(), True)
else:
sel = result[chunk]
sel = flex.bool(xrs_dc.scatterers().size(), sel)
ro.refine(
selection = sel,
rms_bonds_limit = rms_bonds_limit,
rms_angles_limit = rms_angles_limit)
self.msg_strings.append("chunk %s optimal weight: %9.4f"%(
str(chunk), ro.weight_optimal))
if(ro.weight_optimal is not None):
optimal_weights.append(ro.weight_optimal)
# select overall best weight
mean = flex.mean(optimal_weights)
sel = optimal_weights < mean*3
sel &= optimal_weights > mean/3
if(sel.count(True)>0):
optimal_weights = optimal_weights.select(sel)
self.weight = flex.mean_default(optimal_weights, default_weight)
self.msg_strings.append("overall best weight: %9.4f"%self.weight)
def collect(self,
model,
fmodel,
step,
wilson_b=None,
rigid_body_shift_accumulator=None):
global time_collect_and_process
t1 = time.time()
if (self.sites_cart_start is None):
self.sites_cart_start = model.xray_structure.sites_cart()
sites_cart_curr = model.xray_structure.sites_cart()
if (sites_cart_curr.size() == self.sites_cart_start.size()):
self.shifts.append(
flex.mean(
flex.sqrt(
(self.sites_cart_start - sites_cart_curr).dot())))
else:
self.shifts.append("n/a")
if (wilson_b is not None): self.wilson_b = wilson_b
self.steps.append(step)
self.r_works.append(fmodel.r_work())
self.r_frees.append(fmodel.r_free())
use_amber = False
if hasattr(self.params, "amber"): # loaded amber scope
use_amber = self.params.amber.use_amber
self.is_amber_monitor = use_amber
ignore_hd = True
if self.neutron_refinement or use_amber:
ignore_hd = False
use_afitt = False
if hasattr(self.params, "afitt"): # loaded amber scope
use_afitt = self.params.afitt.use_afitt
general_selection = None
if use_afitt:
from mmtbx.geometry_restraints import afitt
if 0:
general_selection = afitt.get_afitt_selection(
model.restraints_manager, model.xray_structure, ignore_hd)
afitt_geom = model.geometry_statistics(
ignore_hd=ignore_hd,
cdl_restraints=self.params.pdb_interpretation.
restraints_library.cdl,
general_selection=general_selection,
)
afitt_geom.show()
general_selection = afitt.get_non_afitt_selection(
model.restraints_manager, model.xray_structure.sites_cart(),
model.xray_structure.hd_selection(), ignore_hd)
geom = model.geometry_statistics(
ignore_hd=ignore_hd,
cdl_restraints=self.params.pdb_interpretation.restraints_library.
cdl,
general_selection=general_selection,
)
if (geom is not None): self.geom.append(geom)
hd_sel = None
if (not self.neutron_refinement and not self.is_neutron_monitor):
hd_sel = model.xray_structure.hd_selection()
b_isos = model.xray_structure.extract_u_iso_or_u_equiv(
) * math.pi**2 * 8
if (hd_sel is not None): b_isos = b_isos.select(~hd_sel)
self.bs_iso_max_a.append(flex.max_default(b_isos, 0))
self.bs_iso_min_a.append(flex.min_default(b_isos, 0))
self.bs_iso_ave_a.append(flex.mean_default(b_isos, 0))
self.n_solv.append(model.number_of_ordered_solvent_molecules())
if (len(self.geom) > 0 and getattr(self.geom[0], "b", None)
and getattr(self.geom[0], "a", None)):
if ([self.bond_start, self.angle_start].count(None) == 2):
if (len(self.geom) > 0):
self.bond_start = self.geom[0].b[2]
self.angle_start = self.geom[0].a[2]
if (len(self.geom) > 0):
self.bond_final = self.geom[len(self.geom) - 1].b[2]
self.angle_final = self.geom[len(self.geom) - 1].a[2]
elif (len(self.geom) == 1):
self.bond_final = self.geom[0].b[2]
self.angle_final = self.geom[0].a[2]
if (rigid_body_shift_accumulator is not None):
self.rigid_body_shift_accumulator = rigid_body_shift_accumulator
t2 = time.time()
time_collect_and_process += (t2 - t1)
self.call_back(model, fmodel, method=step)
def statistics_in_resolution_bins(self, fmodel, free_reflections_per_bin,
max_number_of_bins, n_bins=None):
from mmtbx import bulk_solvent
from cctbx.array_family import flex
if(self.target_name == "twin_lsq_f"):
return fmodel.statistics_in_resolution_bins()
result = []
target_functor = fmodel.target_functor()
target_result = target_functor(compute_gradients=False)
tpr = target_result.target_per_reflection()
if(tpr.size() != 0):
tpr_w = tpr.select(fmodel.arrays.work_sel)
tpr_t = tpr.select(fmodel.arrays.free_sel)
fo_t = fmodel.f_obs_free()
fc_t = fmodel.f_model_scaled_with_k1_t()
fo_w = fmodel.f_obs_work()
fc_w = fmodel.f_model_scaled_with_k1_w()
alpha_w, beta_w = fmodel.alpha_beta_w()
alpha_t, beta_t = fmodel.alpha_beta_t()
pher_w = fmodel.phase_errors_work()
pher_t = fmodel.phase_errors_test()
fom = fmodel.figures_of_merit_work()
if (n_bins is None) or (n_bins < 1) :
n_bins = fmodel.determine_n_bins(
free_reflections_per_bin=free_reflections_per_bin,
max_n_bins=max_number_of_bins)
fmodel.f_obs().setup_binner(n_bins=n_bins)
fo_t.use_binning_of(fmodel.f_obs())
fc_t.use_binning_of(fo_t)
fo_w.use_binning_of(fo_t)
fc_w.use_binning_of(fo_t)
alpha_w.use_binning_of(fo_t)
alpha_t.use_binning_of(fo_t)
beta_w.use_binning_of(fo_t)
beta_t.use_binning_of(fo_t)
for i_bin in fo_t.binner().range_used():
sel_t = fo_t.binner().selection(i_bin)
sel_w = fo_w.binner().selection(i_bin)
sel_all = fmodel.f_obs().binner().selection(i_bin)
sel_fo_all = fmodel.f_obs().select(sel_all)
sel_fo_t = fo_t.select(sel_t)
sel_fc_t = fc_t.select(sel_t)
sel_fo_w = fo_w.select(sel_w)
sel_fc_w = fc_w.select(sel_w)
if (tpr.size() == 0):
sel_tpr_w = None
sel_tpr_t = None
else:
denom_w = sel_fo_w.data().size()
denom_t = sel_fo_t.data().size()
if(denom_w != 0):
sel_tpr_w = flex.sum(tpr_w.select(sel_w))/denom_w
else:
sel_tpr_w = flex.sum(tpr_w.select(sel_w))
if(denom_t != 0):
sel_tpr_t = flex.sum(tpr_t.select(sel_t))/denom_t
else:
sel_tpr_t = flex.sum(tpr_t.select(sel_t))
d_max_,d_min_ = sel_fo_all.d_max_min()
completeness = sel_fo_all.completeness(d_max = d_max_)
d_range = fo_t.binner().bin_legend(
i_bin=i_bin, show_bin_number=False, show_counts=False)
s_fo_w_d = sel_fo_w.data()
s_fc_w_d = sel_fc_w.data()
assert s_fo_w_d.size() == s_fc_w_d.size()
s_fc_w_d_a = flex.abs(s_fc_w_d)
if(s_fo_w_d.size() > 0):
bin = resolution_bin(
i_bin = i_bin,
d_range = d_range,
completeness = completeness,
alpha_work = flex.mean_default(alpha_w.select(sel_w).data(),None),
beta_work = flex.mean_default(beta_w.select(sel_w).data(),None),
r_work = bulk_solvent.r_factor(s_fo_w_d, s_fc_w_d, 1),
r_free = bulk_solvent.r_factor(sel_fo_t.data(), sel_fc_t.data(), 1),
target_work = sel_tpr_w,
target_free = sel_tpr_t,
n_work = sel_fo_w.data().size(),
n_free = sel_fo_t.data().size(),
scale_k1_work= _scale_helper(num=s_fo_w_d, den=s_fc_w_d_a),
mean_f_obs = flex.mean_default(sel_fo_all.data(),None),
fom_work = flex.mean_default(fom.select(sel_w),None),
pher_work = flex.mean_default(pher_w.select(sel_w),None),
pher_free = flex.mean_default(pher_t.select(sel_t),None),
cc_work = cc(s_fo_w_d, s_fc_w_d_a),
cc_free = cc(sel_fo_t.data(), flex.abs(sel_fc_t.data())))
result.append(bin)
return result
def ensemble_mean_geometry_stats(self,
restraints_manager,
xray_structure,
ensemble_xray_structures,
ignore_hd = True,
verbose = False,
out = None,
return_pdb_string = False):
if (out is None): out = sys.stdout
if verbose:
utils.print_header("Ensemble mean geometry statistics", out = out)
ensemble_size = len(ensemble_xray_structures)
print("Ensemble size : ", ensemble_size, file=out)
# Dictionaries to store deltas
ensemble_bond_deltas = {}
ensemble_angle_deltas = {}
ensemble_chirality_deltas = {}
ensemble_planarity_deltas = {}
ensemble_dihedral_deltas = {}
# List to store rmsd of each model
structures_bond_rmsd = flex.double()
structures_angle_rmsd = flex.double()
structures_chirality_rmsd = flex.double()
structures_planarity_rmsd = flex.double()
structures_dihedral_rmsd = flex.double()
# Remove water and hd atoms from global restraints manager
selection = flex.bool()
for sc in xray_structure.scatterers():
if sc.label.find('HOH') > -1:
selection.append(True)
else:
selection.append(False)
if ignore_hd:
hd_selection = xray_structure.hd_selection()
assert hd_selection.size() == selection.size()
for n in range(hd_selection.size()):
if hd_selection[n] or selection[n]:
selection[n] = True
restraints_manager = restraints_manager.select(selection = ~selection)
# Get all deltas
for n, structure in enumerate(ensemble_xray_structures):
if verbose:
print("\nModel : ", n+1, file=out)
sites_cart = structure.sites_cart()
# Remove water and hd atoms from individual structures sites cart
selection = flex.bool()
for sc in structure.scatterers():
if sc.label.find('HOH') > -1:
selection.append(True)
else:
selection.append(False)
if ignore_hd:
hd_selection = structure.hd_selection()
assert hd_selection.size() == selection.size()
for n in range(hd_selection.size()):
if hd_selection[n] or selection[n]:
selection[n] = True
sites_cart = sites_cart.select(~selection)
assert sites_cart is not None
site_labels = None
energies_sites = restraints_manager.energies_sites(
sites_cart = sites_cart,
compute_gradients = False)
# Rmsd of individual model
bond_rmsd = energies_sites.geometry.bond_deviations()[2]
angle_rmsd = energies_sites.geometry.angle_deviations()[2]
chirality_rmsd = energies_sites.geometry.chirality_deviations()[2]
planarity_rmsd = energies_sites.geometry.planarity_deviations()[2]
dihedral_rmsd = energies_sites.geometry.dihedral_deviations()[2]
structures_bond_rmsd.append(bond_rmsd)
structures_angle_rmsd.append(angle_rmsd)
structures_chirality_rmsd.append(chirality_rmsd)
structures_planarity_rmsd.append(planarity_rmsd)
structures_dihedral_rmsd.append(dihedral_rmsd)
if verbose:
print(" Model RMSD", file=out)
print(" bond : %.6g" % bond_rmsd, file=out)
print(" angle : %.6g" % angle_rmsd, file=out)
print(" chirality : %.6g" % chirality_rmsd, file=out)
print(" planarity : %.6g" % planarity_rmsd, file=out)
print(" dihedral : %.6g" % dihedral_rmsd, file=out)
# Bond
pair_proxies = restraints_manager.geometry.pair_proxies(flags=None, sites_cart=sites_cart)
assert pair_proxies is not None
if verbose:
pair_proxies.bond_proxies.show_histogram_of_deltas(
sites_cart = sites_cart,
n_slots = 10,
f = out)
for proxy in pair_proxies.bond_proxies.simple:
bond_simple_proxy = geometry_restraints.bond(
sites_cart = sites_cart,
proxy = proxy)
if proxy.i_seqs in ensemble_bond_deltas:
ensemble_bond_deltas[proxy.i_seqs][0]+=bond_simple_proxy.delta
ensemble_bond_deltas[proxy.i_seqs][1]+=1
else:
ensemble_bond_deltas[proxy.i_seqs] = [bond_simple_proxy.delta, 1]
if verbose:
print("bond simple :", proxy.i_seqs, file=out)
print(" distance_ideal : %.6g" % proxy.distance_ideal, file=out)
print(" distance_model : %.6g" % bond_simple_proxy.distance_model, file=out)
print(" detla : %.6g" % bond_simple_proxy.delta, file=out)
if (pair_proxies.bond_proxies.asu.size() > 0):
asu_mappings = pair_proxies.bond_proxies.asu_mappings()
for proxy in pair_proxies.bond_proxies.asu:
rt_mx = asu_mappings.get_rt_mx_ji(pair=proxy)
bond_asu_proxy = geometry_restraints.bond(
sites_cart = sites_cart,
asu_mappings = asu_mappings,
proxy = proxy)
proxy_i_seqs = (proxy.i_seq, proxy.j_seq)
if proxy_i_seqs in ensemble_bond_deltas:
ensemble_bond_deltas[proxy_i_seqs][0]+=bond_asu_proxy.delta
ensemble_bond_deltas[proxy_i_seqs][1]+=1
else:
ensemble_bond_deltas[proxy_i_seqs] = [bond_asu_proxy.delta, 1]
if verbose:
print("bond asu :", (proxy.i_seq, proxy.j_seq), rt_mx, file=out)
print(" distance_ideal : %.6g" % proxy.distance_ideal, file=out)
print(" distance_model : %.6g" % bond_asu_proxy.distance_model, file=out)
print(" delta : %.6g" % bond_asu_proxy.delta, file=out)
# Angle
if verbose:
restraints_manager.geometry.angle_proxies.show_histogram_of_deltas(
sites_cart = sites_cart,
n_slots = 10,
f = out)
for proxy in restraints_manager.geometry.angle_proxies:
angle_proxy = geometry_restraints.angle(
sites_cart = sites_cart,
proxy = proxy)
if proxy.i_seqs in ensemble_angle_deltas:
ensemble_angle_deltas[proxy.i_seqs][0]+=angle_proxy.delta
ensemble_angle_deltas[proxy.i_seqs][1]+=1
else:
ensemble_angle_deltas[proxy.i_seqs] = [angle_proxy.delta, 1]
if verbose:
print("angle : ", proxy.i_seqs, file=out)
print(" angle_ideal : %.6g" % proxy.angle_ideal, file=out)
print(" angle_model : %.6g" % angle_proxy.angle_model, file=out)
print(" delta : %.6g" % angle_proxy.delta, file=out)
# Chirality
if verbose:
restraints_manager.geometry.chirality_proxies.show_histogram_of_deltas(
sites_cart = sites_cart,
n_slots = 10,
f = out)
for proxy in restraints_manager.geometry.chirality_proxies:
chirality_proxy = geometry_restraints.chirality(
sites_cart = sites_cart,
proxy = proxy)
if proxy.i_seqs in ensemble_chirality_deltas:
ensemble_chirality_deltas[proxy.i_seqs][0]+=chirality_proxy.delta
ensemble_chirality_deltas[proxy.i_seqs][1]+=1
else:
ensemble_chirality_deltas[proxy.i_seqs] = [chirality_proxy.delta, 1]
if verbose:
print("chirality : ", proxy.i_seqs, file=out)
print(" chirality_ideal : %.6g" % proxy.volume_ideal, file=out)
print(" chirality_model : %.6g" % chirality_proxy.volume_model, file=out)
print(" chirality : %.6g" % chirality_proxy.delta, file=out)
# Planarity
for proxy in restraints_manager.geometry.planarity_proxies:
planarity_proxy = geometry_restraints.planarity(
sites_cart = sites_cart,
proxy = proxy)
proxy_i_seqs = []
for i_seq in proxy.i_seqs:
proxy_i_seqs.append(i_seq)
proxy_i_seqs = tuple(proxy_i_seqs)
if proxy_i_seqs in ensemble_planarity_deltas:
ensemble_planarity_deltas[proxy_i_seqs][0]+=planarity_proxy.rms_deltas()
ensemble_planarity_deltas[proxy_i_seqs][1]+=1
else:
ensemble_planarity_deltas[proxy_i_seqs] = [planarity_proxy.rms_deltas(), 1]
if verbose:
print("planarity : ", proxy_i_seqs, file=out)
print(" planarity rms_deltas : %.6g" % planarity_proxy.rms_deltas(), file=out)
# Dihedral
if verbose:
restraints_manager.geometry.dihedral_proxies.show_histogram_of_deltas(
sites_cart = sites_cart,
n_slots = 10,
f = out)
for proxy in restraints_manager.geometry.dihedral_proxies:
dihedral_proxy = geometry_restraints.dihedral(
sites_cart = sites_cart,
proxy = proxy)
if proxy.i_seqs in ensemble_dihedral_deltas:
ensemble_dihedral_deltas[proxy.i_seqs][0]+=dihedral_proxy.delta
ensemble_dihedral_deltas[proxy.i_seqs][1]+=1
else:
ensemble_dihedral_deltas[proxy.i_seqs] = [dihedral_proxy.delta, 1]
if verbose:
print("dihedral : ", proxy.i_seqs, file=out)
print(" dihedral_ideal : %.6g" % proxy.angle_ideal, file=out)
print(" periodicity : %.6g" % proxy.periodicity, file=out)
print(" dihedral_model : %.6g" % dihedral_proxy.angle_model, file=out)
print(" delta : %.6g" % dihedral_proxy.delta, file=out)
# Calculate RMSDs for ensemble model
# Bond
mean_bond_delta = flex.double()
for proxy, info in six.iteritems(ensemble_bond_deltas):
# assert info[1] == ensemble_size
if info[1]!=ensemble_size:
print('skipping bond RMSD calns of ensemble %s' % info, file=out)
continue
mean_delta = info[0] / info[1]
mean_bond_delta.append(mean_delta)
bond_delta_sq = mean_bond_delta * mean_bond_delta
ensemble_bond_rmsd = math.sqrt(flex.mean_default(bond_delta_sq, 0))
# Angle
mean_angle_delta = flex.double()
for proxy, info in six.iteritems(ensemble_angle_deltas):
assert info[1] == ensemble_size
mean_delta = info[0] / info[1]
mean_angle_delta.append(mean_delta)
angle_delta_sq = mean_angle_delta * mean_angle_delta
ensemble_angle_rmsd = math.sqrt(flex.mean_default(angle_delta_sq, 0))
# Chirality
mean_chirality_delta = flex.double()
for proxy, info in six.iteritems(ensemble_chirality_deltas):
assert info[1] == ensemble_size
mean_delta = info[0] / info[1]
mean_chirality_delta.append(mean_delta)
chirality_delta_sq = mean_chirality_delta * mean_chirality_delta
ensemble_chirality_rmsd = math.sqrt(flex.mean_default(chirality_delta_sq, 0))
# Planarity
mean_planarity_delta = flex.double()
for proxy, info in six.iteritems(ensemble_planarity_deltas):
assert info[1] == ensemble_size
mean_delta = info[0] / info[1]
mean_planarity_delta.append(mean_delta)
planarity_delta_sq = mean_planarity_delta * mean_planarity_delta
ensemble_planarity_rmsd = math.sqrt(flex.mean_default(planarity_delta_sq, 0))
# Dihedral
mean_dihedral_delta = flex.double()
for proxy, info in six.iteritems(ensemble_dihedral_deltas):
assert info[1] == ensemble_size
mean_delta = info[0] / info[1]
mean_dihedral_delta.append(mean_delta)
dihedral_delta_sq = mean_dihedral_delta * mean_dihedral_delta
ensemble_dihedral_rmsd = math.sqrt(flex.mean_default(dihedral_delta_sq, 0))
# Calculate <structure rmsd>
assert ensemble_size == structures_bond_rmsd
assert ensemble_size == structures_angle_rmsd
assert ensemble_size == structures_chirality_rmsd
assert ensemble_size == structures_planarity_rmsd
assert ensemble_size == structures_dihedral_rmsd
structure_bond_rmsd_mean = structures_bond_rmsd.min_max_mean().mean
structure_angle_rmsd_mean = structures_angle_rmsd.min_max_mean().mean
structure_chirality_rmsd_mean = structures_chirality_rmsd.min_max_mean().mean
structure_planarity_rmsd_mean = structures_planarity_rmsd.min_max_mean().mean
structure_dihedral_rmsd_mean = structures_dihedral_rmsd.min_max_mean().mean
# Show summary
utils.print_header("Ensemble RMSD summary", out = out)
print(" RMSD (mean delta per restraint)", file=out)
print(" bond : %.6g" % ensemble_bond_rmsd, file=out)
print(" angle : %.6g" % ensemble_angle_rmsd, file=out)
print(" chirality : %.6g" % ensemble_chirality_rmsd, file=out)
print(" planarity : %.6g" % ensemble_planarity_rmsd, file=out)
print(" dihedral : %.6g" % ensemble_dihedral_rmsd, file=out)
print(" RMSD (mean RMSD per structure)", file=out)
print(" bond : %.6g" % structure_bond_rmsd_mean, file=out)
print(" angle : %.6g" % structure_angle_rmsd_mean, file=out)
print(" chirality : %.6g" % structure_chirality_rmsd_mean, file=out)
print(" planarity : %.6g" % structure_planarity_rmsd_mean, file=out)
print(" dihedral : %.6g" % structure_dihedral_rmsd_mean, file=out)
if ignore_hd:
print("\n Calculated excluding H/D", file=out)
else:
print("\n Calculated including H/D", file=out)
if return_pdb_string:
ens_geo_pdb_string = "REMARK 3"
ens_geo_pdb_string += "\nREMARK 3 NUMBER STRUCTURES IN ENSEMBLE : {0:5d}".format(ensemble_size)
if ignore_hd:
ens_geo_pdb_string += "\nREMARK 3 RMS DEVIATIONS FROM IDEAL VALUES (EXCLUDING H/D)"
else:
ens_geo_pdb_string += "\nREMARK 3 RMS DEVIATIONS FROM IDEAL VALUES (INCLUDING H/D)"
ens_geo_pdb_string += "\nREMARK 3 RMSD (MEAN DELTA PER RESTRAINT)"
ens_geo_pdb_string += "\nREMARK 3 BOND : {0:5.3f}".format(ensemble_bond_rmsd)
ens_geo_pdb_string += "\nREMARK 3 ANGLE : {0:5.3f}".format(ensemble_angle_rmsd)
ens_geo_pdb_string += "\nREMARK 3 CHIRALITY : {0:5.3f}".format(ensemble_chirality_rmsd)
ens_geo_pdb_string += "\nREMARK 3 PLANARITY : {0:5.3f}".format(ensemble_planarity_rmsd)
ens_geo_pdb_string += "\nREMARK 3 DIHEDRAL : {0:5.2f}".format(ensemble_dihedral_rmsd)
ens_geo_pdb_string += "\nREMARK 3 RMSD (MEAN RMSD PER STRUCTURE)"
ens_geo_pdb_string += "\nREMARK 3 BOND : {0:5.3f}".format(structure_bond_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3 ANGLE : {0:5.3f}".format(structure_angle_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3 CHIRALITY : {0:5.3f}".format(structure_chirality_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3 PLANARITY : {0:5.3f}".format(structure_planarity_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3 DIHEDRAL : {0:5.2f}".format(structure_dihedral_rmsd_mean)
ens_geo_pdb_string += "\nREMARK 3"
return ens_geo_pdb_string
def statistics_in_resolution_bins(self,
fmodel,
free_reflections_per_bin,
max_number_of_bins,
n_bins=None):
from mmtbx import bulk_solvent
from cctbx.array_family import flex
if (self.target_name == "twin_lsq_f"):
return fmodel.statistics_in_resolution_bins()
result = []
target_functor = fmodel.target_functor()
target_result = target_functor(compute_gradients=False)
tpr = target_result.target_per_reflection()
if (tpr.size() != 0):
tpr_w = tpr.select(fmodel.arrays.work_sel)
tpr_t = tpr.select(fmodel.arrays.free_sel)
fo_t = fmodel.f_obs_free()
fc_t = fmodel.f_model_scaled_with_k1_t()
fo_w = fmodel.f_obs_work()
fc_w = fmodel.f_model_scaled_with_k1_w()
alpha_t, beta_t = fmodel.alpha_beta_t()
if (n_bins is None) or (n_bins < 1):
n_bins = fmodel.determine_n_bins(
free_reflections_per_bin=free_reflections_per_bin,
max_n_bins=max_number_of_bins)
fmodel.f_obs().setup_binner(n_bins=n_bins)
fo_t.use_binning_of(fmodel.f_obs())
fc_t.use_binning_of(fo_t)
fo_w.use_binning_of(fo_t)
fc_w.use_binning_of(fo_t)
self.alpha_w.use_binning_of(fo_t)
alpha_t.use_binning_of(fo_t)
self.beta_w.use_binning_of(fo_t)
beta_t.use_binning_of(fo_t)
for i_bin in fo_t.binner().range_used():
sel_t = fo_t.binner().selection(i_bin)
sel_w = fo_w.binner().selection(i_bin)
sel_all = fmodel.f_obs().binner().selection(i_bin)
sel_fo_all = fmodel.f_obs().select(sel_all)
sel_fo_t = fo_t.select(sel_t)
sel_fc_t = fc_t.select(sel_t)
sel_fo_w = fo_w.select(sel_w)
sel_fc_w = fc_w.select(sel_w)
if (tpr.size() == 0):
sel_tpr_w = None
sel_tpr_t = None
else:
denom_w = sel_fo_w.data().size()
denom_t = sel_fo_t.data().size()
if (denom_w != 0):
sel_tpr_w = flex.sum(tpr_w.select(sel_w)) / denom_w
else:
sel_tpr_w = flex.sum(tpr_w.select(sel_w))
if (denom_t != 0):
sel_tpr_t = flex.sum(tpr_t.select(sel_t)) / denom_t
else:
sel_tpr_t = flex.sum(tpr_t.select(sel_t))
d_max_, d_min_ = sel_fo_all.d_max_min()
completeness = sel_fo_all.completeness(d_max=d_max_)
d_range = "%7.2f - %7.2f" % (d_max_, d_min_)
s_fo_w_d = sel_fo_w.data()
s_fc_w_d = sel_fc_w.data()
assert s_fo_w_d.size() == s_fc_w_d.size()
s_fc_w_d_a = flex.abs(s_fc_w_d)
if (s_fo_w_d.size() > 0):
bin = resolution_bin(
i_bin=i_bin,
d_range=d_range,
completeness=completeness,
alpha_work=flex.mean_default(
self.alpha_w.select(sel_w).data(), None),
beta_work=flex.mean_default(
self.beta_w.select(sel_w).data(), None),
r_work=bulk_solvent.r_factor(s_fo_w_d, s_fc_w_d, 1),
r_free=bulk_solvent.r_factor(sel_fo_t.data(),
sel_fc_t.data(), 1),
target_work=sel_tpr_w,
target_free=sel_tpr_t,
n_work=sel_fo_w.data().size(),
n_free=sel_fo_t.data().size(),
scale_k1_work=_scale_helper(num=s_fo_w_d, den=s_fc_w_d_a),
mean_f_obs=flex.mean_default(sel_fo_all.data(), None),
fom_work=flex.mean_default(self.fom.select(sel_w), None),
pher_work=flex.mean_default(self.pher_w.select(sel_w),
None),
pher_free=flex.mean_default(self.pher_t.select(sel_t),
None),
cc_work=cc(s_fo_w_d, s_fc_w_d_a),
cc_free=cc(sel_fo_t.data(), flex.abs(sel_fc_t.data())))
result.append(bin)
return result
def mmmd(self, values, eps = None):
if(eps is not None): values = values * eps
return flex.min_default(values, None), \
flex.max_default(values, None), \
flex.mean_default(values, None)
def run_coordinate_refinement(
geometry_restraints_manager,
selection_variable,
density_map,
real_space_gradients_delta,
work_params,
pdb_atoms=None,
sites_cart=None,
home_restraints_list=[],
work_scatterers=None,
unit_cell=None,
d_min=None,
weight_map=None,
write_pdb_callback=None,
log=None):
assert [pdb_atoms, sites_cart].count(None)==1
if (log is None): log = null_out()
if (work_scatterers is not None):
assert unit_cell is not None
assert d_min is not None
best_info = None
if (pdb_atoms is not None):
sites_cart_start = pdb_atoms.extract_xyz()
site_labels = [atom.id_str() for atom in pdb_atoms]
else:
sites_cart_start = sites_cart
site_labels = None
grmp = geometry_restraints_manager_plus(
manager=geometry_restraints_manager,
home_sites_cart=sites_cart_start,
home_restraints_list=home_restraints_list)
print >> log, "Before coordinate refinement:"
grmp.energies_sites(sites_cart=sites_cart_start).show(f=log)
print >> log
log.flush()
rstw_params = work_params.coordinate_refinement.real_space_target_weights
if (rstw_params.number_of_samples is None):
rstw_list = [work_params.real_space_target_weight]
else:
rstw_list = [rstw_params.first_sample + i * rstw_params.sampling_step
for i in xrange(rstw_params.number_of_samples)]
lbfgs_termination_params = scitbx.lbfgs.termination_parameters(
max_iterations=work_params.coordinate_refinement
.lbfgs_max_iterations)
lbfgs_exception_handling_params = \
scitbx.lbfgs.exception_handling_parameters(
ignore_line_search_failed_step_at_lower_bound=True)
bond_rmsd_list = []
for rstw in rstw_list:
refined = maptbx.real_space_refinement_simple.lbfgs(
sites_cart=sites_cart_start,
density_map=density_map,
weight_map=weight_map,
selection_variable=selection_variable,
geometry_restraints_manager=grmp,
real_space_target_weight=rstw,
real_space_gradients_delta=real_space_gradients_delta,
local_standard_deviations_radius=
work_params.local_standard_deviations_radius,
weight_map_scale_factor=work_params.weight_map_scale_factor,
lbfgs_termination_params=lbfgs_termination_params,
lbfgs_exception_handling_params=lbfgs_exception_handling_params)
print >> log, "After coordinate refinement" \
" with real-space target weight %.1f:" % rstw
grmp.energies_sites(sites_cart=refined.sites_cart).show(f=log)
bond_proxies = grmp.pair_proxies().bond_proxies
bond_proxies.show_sorted(
by_value="residual",
sites_cart=refined.sites_cart,
site_labels=site_labels,
f=log,
prefix=" ",
max_items=3)
print >> log
print >> log, " number_of_function_evaluations:", \
refined.number_of_function_evaluations
print >> log, " real+geo target start: %.6g" % refined.f_start
print >> log, " real+geo target final: %.6g" % refined.f_final
deltas = bond_proxies.deltas(sites_cart=refined.sites_cart)
deltas_abs = flex.abs(deltas)
deltas_abs_sorted = deltas_abs.select(
flex.sort_permutation(deltas_abs), reverse=True)
wabr_params = rstw_params.worst_acceptable_bond_rmsd
acceptable = (
flex.mean_default(deltas_abs_sorted[:wabr_params.pool_size],0)
< wabr_params.max_pool_average)
if(deltas.size()>0):
bond_rmsd = flex.mean_sq(deltas)**0.5
else: bond_rmsd=0
bond_rmsd_list.append(bond_rmsd)
print >> log, " Bond RMSD: %.3f" % bond_rmsd
#
if (work_scatterers is None):
region_cc = None
else:
region_cc = maptbx.region_density_correlation(
large_unit_cell=unit_cell,
large_d_min=d_min,
large_density_map=density_map,
sites_cart=refined.sites_cart_variable,
site_radii=flex.double(refined.sites_cart_variable.size(), 1),
work_scatterers=work_scatterers)
#
rmsd_diff = abs(rstw_params.bond_rmsd_target - bond_rmsd)
if ( best_info is None
or best_info.rmsd_diff > rmsd_diff
and (acceptable or not best_info.acceptable)):
best_info = group_args(
rstw=rstw,
refined=refined,
acceptable=acceptable,
rmsd_diff=rmsd_diff,
region_cc=region_cc,
sites_cart=refined.sites_cart)
print >> log
if (best_info is not None):
print >> log, "Table of real-space target weights vs. bond RMSD:"
print >> log, " weight RMSD"
for w,d in zip(rstw_list, bond_rmsd_list):
print >> log, " %6.1f %5.3f" % (w,d)
print >> log, "Best real-space target weight: %.1f" % best_info.rstw
print >> log, \
"Associated refined final value: %.6g" % best_info.refined.f_final
if (best_info.region_cc is not None):
print >> log, "Associated region correlation: %.4f" % best_info.region_cc
print >> log
if (pdb_atoms is not None):
pdb_atoms.set_xyz(new_xyz=refined.sites_cart)
if (write_pdb_callback is not None):
write_pdb_callback(situation="after_best_weight_determination")
#
fgm_params = work_params.coordinate_refinement \
.finishing_geometry_minimization
if (fgm_params.cycles_max is not None and fgm_params.cycles_max > 0):
print >> log, "As previously obtained with target weight %.1f:" \
% best_info.rstw
grmp.energies_sites(sites_cart=refined.sites_cart).show(
f=log, prefix=" ")
print >> log, "Finishing refinement to idealize geometry:"
print >> log, " number of function"
print >> log, " weight evaluations cycle RMSD"
number_of_fgm_cycles = 0
rstw = best_info.rstw * fgm_params.first_weight_scale
sites_cart_start = best_info.refined.sites_cart.deep_copy()
for i_cycle in xrange(fgm_params.cycles_max):
fgm_refined = maptbx.real_space_refinement_simple.lbfgs(
sites_cart=sites_cart_start,
density_map=density_map,
selection_variable=selection_variable,
geometry_restraints_manager=grmp,
energies_sites_flags=cctbx.geometry_restraints.flags.flags(
default=True, dihedral=fgm_params.dihedral_restraints),
real_space_target_weight=rstw,
real_space_gradients_delta=real_space_gradients_delta,
local_standard_deviations_radius=
work_params.local_standard_deviations_radius,
weight_map_scale_factor=work_params.weight_map_scale_factor,
lbfgs_termination_params=lbfgs_termination_params,
lbfgs_exception_handling_params=lbfgs_exception_handling_params)
cycle_rmsd = sites_cart_start.rms_difference(fgm_refined.sites_cart)
print >> log, " %6.1f %10d %6.3f" % (
rstw, fgm_refined.number_of_function_evaluations, cycle_rmsd)
number_of_fgm_cycles += 1
rstw *= fgm_params.cycle_weight_multiplier
if (cycle_rmsd < 1.e-4):
break
if (fgm_params.superpose_cycle_end_with_cycle_start):
fit = scitbx.math.superpose.least_squares_fit(
reference_sites=best_info.refined.sites_cart,
other_sites=fgm_refined.sites_cart)
fgm_refined.sites_cart = fit.other_sites_best_fit()
sites_cart_start = fgm_refined.sites_cart.deep_copy()
print >> log, "After %d refinements to idealize geometry:" % (
number_of_fgm_cycles)
grmp.energies_sites(sites_cart=fgm_refined.sites_cart).show(
f=log, prefix=" ")
if (work_scatterers is None):
fgm_region_cc = None
else:
fgm_region_cc = maptbx.region_density_correlation(
large_unit_cell=unit_cell,
large_d_min=d_min,
large_density_map=density_map,
sites_cart=fgm_refined.sites_cart_variable,
site_radii=flex.double(fgm_refined.sites_cart_variable.size(), 1),
work_scatterers=work_scatterers)
print >> log, " Associated region correlation: %.4f" % fgm_region_cc
print >> log
best_info.fgm_refined = fgm_refined
best_info.fgm_region_cc = fgm_region_cc
if (pdb_atoms is not None):
pdb_atoms.set_xyz(new_xyz=fgm_refined.sites_cart)
best_info.sites_cart = fgm_refined.sites_cart
if (write_pdb_callback is not None):
write_pdb_callback(situation="after_finishing_geo_min")
else:
best_info.fgm_refined = None
best_info.fgm_region_cc = None
return best_info