def generate_spots(crystal_model, detector, beam, goniometer=None, scan=None,
sel_fraction=1.0):
import math
experiment = Experiment(beam=beam,
detector=detector,
goniometer=goniometer,
scan=scan,
crystal=crystal_model)
# if we don't set the imageset then from_predictions uses the StillsReflectionPredictor :-(
from dxtbx.imageset import NullReader, ImageSweep
imageset = ImageSweep(NullReader, indices=range(len(scan.get_epochs())), beam=beam, goniometer=goniometer,
detector=detector, scan=scan)
experiment.imageset = imageset
predicted = flex.reflection_table.from_predictions(experiment)
sel = flex.random_selection(len(predicted),
int(math.floor(sel_fraction*len(predicted))))
predicted = predicted.select(sel)
predicted['imageset_id'] = flex.size_t(len(predicted), 0)
predicted['xyzobs.px.value'] = predicted['xyzcal.px']
predicted['xyzobs.px.variance'] = flex.vec3_double(
len(predicted), (0.5,0.5,0.5))
return predicted
def generate_spots(crystal_model,
detector,
beam,
goniometer=None,
scan=None,
sel_fraction=1.0):
experiment = Experiment(beam=beam,
detector=detector,
goniometer=goniometer,
scan=scan,
crystal=crystal_model)
# if we don't set the imageset then from_predictions uses the StillsReflectionPredictor :-(
filenames = [""] * len(scan)
reader = Reader(filenames)
masker = Masker(filenames)
data = ImageSetData(reader, masker)
imageset = ImageSweep(data, beam, detector, goniometer, scan)
experiment.imageset = imageset
predicted = flex.reflection_table.from_predictions(experiment)
sel = flex.random_selection(len(predicted),
int(math.floor(sel_fraction * len(predicted))))
predicted = predicted.select(sel)
predicted['imageset_id'] = flex.size_t(len(predicted), 0)
predicted['xyzobs.px.value'] = predicted['xyzcal.px']
predicted['xyzobs.px.variance'] = flex.vec3_double(len(predicted),
(0.5, 0.5, 0.5))
return predicted
def generate_spots(crystal_model,
detector,
beam,
goniometer=None,
scan=None,
sel_fraction=1.0):
import math
experiment = Experiment(beam=beam,
detector=detector,
goniometer=goniometer,
scan=scan,
crystal=crystal_model)
# if we don't set the imageset then from_predictions uses the StillsReflectionPredictor :-(
from dxtbx.imageset import NullReader, ImageSweep
imageset = ImageSweep(NullReader,
indices=range(len(scan.get_epochs())),
beam=beam,
goniometer=goniometer,
detector=detector,
scan=scan)
experiment.imageset = imageset
predicted = flex.reflection_table.from_predictions(experiment)
sel = flex.random_selection(len(predicted),
int(math.floor(sel_fraction * len(predicted))))
predicted = predicted.select(sel)
predicted['imageset_id'] = flex.size_t(len(predicted), 0)
predicted['xyzobs.px.value'] = predicted['xyzcal.px']
predicted['xyzobs.px.variance'] = flex.vec3_double(len(predicted),
(0.5, 0.5, 0.5))
return predicted
def _average_bbox_size(reflections):
"""Calculate the average bbox size for debugging"""
bbox = reflections["bbox"]
sel = flex.random_selection(len(bbox), min(len(bbox), 1000))
subset_bbox = bbox.select(sel)
xmin, xmax, ymin, ymax, zmin, zmax = subset_bbox.parts()
xsize = flex.mean((xmax - xmin).as_double())
ysize = flex.mean((ymax - ymin).as_double())
zsize = flex.mean((zmax - zmin).as_double())
return xsize, ysize, zsize
def sample_predictions(experiments, predicted, params):
"""
Select a random sample of the predicted reflections to integrate.
Args:
experiments: The experiment list
predicted: A reflection table of predicted reflections
params: The integration phil parameters
Returns:
A subset of the original predicted table.
"""
if params.sampling.random_seed:
flex.set_random_seed(params.sampling.random_seed)
nref_per_degree = params.sampling.reflections_per_degree
min_sample_size = params.sampling.minimum_sample_size
max_sample_size = params.sampling.maximum_sample_size
# this code is very similar to David's code in algorithms/refinement/reflection_manager.py!
working_isel = flex.size_t()
for iexp, exp in enumerate(experiments):
sel = predicted["id"] == iexp
isel = sel.iselection()
nrefs = sample_size = len(isel)
# set sample size according to nref_per_degree (per experiment)
if exp.scan and nref_per_degree:
sequence_range_rad = exp.scan.get_oscillation_range(deg=False)
width = math.degrees(abs(sequence_range_rad[1] - sequence_range_rad[0]))
sample_size = int(nref_per_degree * width)
else:
sequence_range_rad = None
# adjust sample size if below the chosen limit
sample_size = max(sample_size, min_sample_size)
# set maximum sample size if requested
if max_sample_size:
sample_size = min(sample_size, max_sample_size)
# determine subset and collect indices
if sample_size < nrefs:
isel = isel.select(flex.random_selection(nrefs, sample_size))
working_isel.extend(isel)
# create subset
return predicted.select(working_isel)
def sample_predictions(self, experiments, predicted, params):
""" Select a random sample of the predicted reflections to integrate. """
from dials.array_family import flex
nref_per_degree = params.sampling.reflections_per_degree
min_sample_size = params.sampling.minimum_sample_size
max_sample_size = params.sampling.maximum_sample_size
# this code is very similar to David's code in algorithms/refinement/reflection_manager.py!
# constants
from math import pi
RAD2DEG = 180.0 / pi
DEG2RAD = pi / 180.0
working_isel = flex.size_t()
for iexp, exp in enumerate(experiments):
sel = predicted["id"] == iexp
isel = sel.iselection()
# refs = self._reflections.select(sel)
nrefs = sample_size = len(isel)
# set sample size according to nref_per_degree (per experiment)
if exp.scan and nref_per_degree:
sweep_range_rad = exp.scan.get_oscillation_range(deg=False)
width = abs(sweep_range_rad[1] - sweep_range_rad[0]) * RAD2DEG
sample_size = int(nref_per_degree * width)
else:
sweep_range_rad = None
# adjust sample size if below the chosen limit
sample_size = max(sample_size, min_sample_size)
# set maximum sample size if requested
if max_sample_size:
sample_size = min(sample_size, max_sample_size)
# determine subset and collect indices
if sample_size < nrefs:
isel = isel.select(flex.random_selection(nrefs, sample_size))
working_isel.extend(isel)
# create subset
return predicted.select(working_isel)
def sample_predictions(self, experiments, predicted, params):
"""Select a random sample of the predicted reflections to integrate."""
nref_per_degree = params.sampling.reflections_per_degree
min_sample_size = params.sampling.minimum_sample_size
max_sample_size = params.sampling.maximum_sample_size
# this code is very similar to David's code in algorithms/refinement/reflection_manager.py!
# constants
from math import pi
RAD2DEG = 180.0 / pi
working_isel = flex.size_t()
for iexp, exp in enumerate(experiments):
sel = predicted["id"] == iexp
isel = sel.iselection()
# refs = self._reflections.select(sel)
nrefs = sample_size = len(isel)
# set sample size according to nref_per_degree (per experiment)
if exp.scan and nref_per_degree:
sequence_range_rad = exp.scan.get_oscillation_range(deg=False)
width = abs(sequence_range_rad[1] -
sequence_range_rad[0]) * RAD2DEG
sample_size = int(nref_per_degree * width)
else:
sequence_range_rad = None
# adjust sample size if below the chosen limit
sample_size = max(sample_size, min_sample_size)
# set maximum sample size if requested
if max_sample_size:
sample_size = min(sample_size, max_sample_size)
# determine subset and collect indices
if sample_size < nrefs:
isel = isel.select(flex.random_selection(nrefs, sample_size))
working_isel.extend(isel)
# create subset
return predicted.select(working_isel)
def _create_working_set(self):
"""Make a subset of the indices of reflections to use in refinement"""
working_isel = flex.size_t()
for iexp, exp in enumerate(self._experiments):
sel = self._reflections["id"] == iexp
isel = sel.iselection()
# refs = self._reflections.select(sel)
nrefs = sample_size = len(isel)
# set sample size according to nref_per_degree (per experiment)
if exp.scan and self._nref_per_degree:
sequence_range_rad = exp.scan.get_oscillation_range(deg=False)
width = abs(sequence_range_rad[1] -
sequence_range_rad[0]) * RAD2DEG
if self._nref_per_degree is libtbx.Auto:
# For multi-turn, set sample size to the greater of the approx nref
# in a single turn and 100 reflections per degree
turns = width / 360.0
if turns > 1:
approx_nref_1_turn = int(math.ceil(nrefs / turns))
sample_size = int(
max(approx_nref_1_turn, 100.0 * width))
else:
sample_size = int(self._nref_per_degree * width)
# adjust sample size if below the chosen limit
sample_size = max(sample_size, self._min_sample_size)
# set maximum sample size if requested
if self._max_sample_size:
sample_size = min(sample_size, self._max_sample_size)
# determine subset and collect indices
if sample_size < nrefs:
isel = isel.select(flex.random_selection(nrefs, sample_size))
working_isel.extend(isel)
# create subsets
free_sel = flex.bool(len(self._reflections), True)
free_sel.set_selected(working_isel, False)
self._free_reflections = self._reflections.select(free_sel)
self._reflections = self._reflections.select(working_isel)
def _create_working_set(self):
"""Make a subset of the indices of reflections to use in refinement"""
working_isel = flex.size_t()
for iexp, exp in enumerate(self._experiments):
sel = self._reflections['id'] == iexp
isel = sel.iselection()
#refs = self._reflections.select(sel)
nrefs = sample_size = len(isel)
# set sample size according to nref_per_degree (per experiment)
if exp.scan and self._nref_per_degree:
sweep_range_rad = exp.scan.get_oscillation_range(deg=False)
width = abs(sweep_range_rad[1] -
sweep_range_rad[0]) * RAD2DEG
sample_size = int(self._nref_per_degree * width)
else: sweep_range_rad = None
# adjust sample size if below the chosen limit
sample_size = max(sample_size, self._min_sample_size)
# set maximum sample size if requested
if self._max_sample_size:
sample_size = min(sample_size, self._max_sample_size)
# determine subset and collect indices
if sample_size < nrefs:
isel = isel.select(flex.random_selection(nrefs, sample_size))
working_isel.extend(isel)
# create subsets
free_sel = flex.bool(len(self._reflections), True)
free_sel.set_selected(working_isel, False)
self._free_reflections = self._reflections.select(free_sel)
self._reflections = self._reflections.select(working_isel)
return
def _create_working_set(self):
"""Make a subset of the indices of reflections to use in refinement"""
working_isel = flex.size_t()
for iexp, exp in enumerate(self._experiments):
sel = self._reflections['id'] == iexp
isel = sel.iselection()
#refs = self._reflections.select(sel)
nrefs = sample_size = len(isel)
# set sample size according to nref_per_degree (per experiment)
if exp.scan and self._nref_per_degree:
sweep_range_rad = exp.scan.get_oscillation_range(deg=False)
width = abs(sweep_range_rad[1] - sweep_range_rad[0]) * RAD2DEG
sample_size = int(self._nref_per_degree * width)
else:
sweep_range_rad = None
# adjust sample size if below the chosen limit
sample_size = max(sample_size, self._min_sample_size)
# set maximum sample size if requested
if self._max_sample_size:
sample_size = min(sample_size, self._max_sample_size)
# determine subset and collect indices
if sample_size < nrefs:
isel = isel.select(flex.random_selection(nrefs, sample_size))
working_isel.extend(isel)
# create subsets
free_sel = flex.bool(len(self._reflections), True)
free_sel.set_selected(working_isel, False)
self._free_reflections = self._reflections.select(free_sel)
self._reflections = self._reflections.select(working_isel)
return
def test_assign_indices(space_group_symbol, experiment, crystal_factory):
cryst_model = crystal_factory(space_group_symbol)
experiment.crystal = cryst_model
predicted_reflections = flex.reflection_table.from_predictions(experiment)
use_fraction = 0.3
use_sel = flex.random_selection(
len(predicted_reflections),
int(use_fraction * len(predicted_reflections)))
predicted_reflections = predicted_reflections.select(use_sel)
miller_indices = predicted_reflections["miller_index"]
predicted_reflections["xyzobs.mm.value"] = predicted_reflections[
"xyzcal.mm"]
predicted_reflections["id"] = flex.int(len(predicted_reflections), 0)
predicted_reflections.map_centroids_to_reciprocal_space(
ExperimentList([experiment]))
# check that local and global indexing worked equally well in absence of errors
result = CompareGlobalLocal(experiment, predicted_reflections,
miller_indices)
assert result.misindexed_local == 0
assert result.misindexed_global == 0
a, b, c = map(matrix.col, experiment.crystal.get_real_space_vectors())
relative_error = 0.02
a *= 1 + relative_error
b *= 1 + relative_error
c *= 1 + relative_error
cryst_model2 = Crystal(a, b, c, space_group=cryst_model.get_space_group())
experiment.crystal = cryst_model2
result = CompareGlobalLocal(experiment, predicted_reflections,
miller_indices)
# check that the local indexing did a better job given the errors in the basis vectors
# assert result.misindexed_local < result.misindexed_global
assert result.misindexed_local == 0
assert result.correct_local > result.correct_global
# usually the number misindexed is much smaller than this
assert result.misindexed_local < (0.001 * len(result.reflections_local))
# the reciprocal matrix
A = matrix.sqr(cryst_model.get_A())
A = random_rotation(angle_max=0.5) * A
direct_matrix = A.inverse()
cryst_model2 = Crystal(
direct_matrix[0:3],
direct_matrix[3:6],
direct_matrix[6:9],
space_group=cryst_model.get_space_group(),
)
experiment.crystal = cryst_model2
result = CompareGlobalLocal(experiment, predicted_reflections,
miller_indices)
# check that the local indexing did a better job given the errors in the basis vectors
assert result.misindexed_local <= result.misindexed_global, (
result.misindexed_local,
result.misindexed_global,
)
assert result.misindexed_local < 0.01 * result.correct_local
assert result.correct_local >= result.correct_global
# usually the number misindexed is much smaller than this
assert result.misindexed_local < (0.001 * len(result.reflections_local))
def run(space_group_info):
datablock_json = os.path.join(dials_regression, "indexing_test_data",
"i04_weak_data", "datablock_orig.json")
datablock = load.datablock(datablock_json, check_format=False)[0]
sweep = datablock.extract_imagesets()[0]
sweep._indices = sweep._indices[:20]
sweep.set_scan(sweep.get_scan()[:20])
import random
space_group = space_group_info.group()
unit_cell = space_group_info.any_compatible_unit_cell(
volume=random.uniform(1e4, 1e6))
crystal_symmetry = crystal.symmetry(unit_cell=unit_cell,
space_group=space_group)
crystal_symmetry.show_summary()
# the reciprocal matrix
B = matrix.sqr(unit_cell.fractionalization_matrix()).transpose()
U = random_rotation()
A = U * B
direct_matrix = A.inverse()
cryst_model = Crystal(direct_matrix[0:3],
direct_matrix[3:6],
direct_matrix[6:9],
space_group=space_group)
experiment = Experiment(imageset=sweep,
beam=sweep.get_beam(),
detector=sweep.get_detector(),
goniometer=sweep.get_goniometer(),
scan=sweep.get_scan(),
crystal=cryst_model)
predicted_reflections = flex.reflection_table.from_predictions(experiment)
use_fraction = 0.3
use_sel = flex.random_selection(
len(predicted_reflections),
int(use_fraction * len(predicted_reflections)))
predicted_reflections = predicted_reflections.select(use_sel)
miller_indices = predicted_reflections['miller_index']
miller_set = miller.set(crystal_symmetry,
miller_indices,
anomalous_flag=True)
predicted_reflections['xyzobs.mm.value'] = predicted_reflections[
'xyzcal.mm']
predicted_reflections['id'] = flex.int(len(predicted_reflections), 0)
from dials.algorithms.indexing.indexer import indexer_base
indexer_base.map_centroids_to_reciprocal_space(predicted_reflections,
sweep.get_detector(),
sweep.get_beam(),
sweep.get_goniometer())
# check that local and global indexing worked equally well in absence of errors
result = compare_global_local(experiment, predicted_reflections,
miller_indices)
assert result.misindexed_local == 0
assert result.misindexed_global == 0
a, b, c = map(matrix.col, cryst_model.get_real_space_vectors())
relative_error = 0.02
a *= (1 + relative_error)
b *= (1 + relative_error)
c *= (1 + relative_error)
cryst_model2 = Crystal(a, b, c, space_group=space_group)
experiment.crystal = cryst_model2
result = compare_global_local(experiment, predicted_reflections,
miller_indices)
# check that the local indexing did a better job given the errors in the basis vectors
#assert result.misindexed_local < result.misindexed_global
assert result.misindexed_local == 0
assert result.correct_local > result.correct_global
# usually the number misindexed is much smaller than this
assert result.misindexed_local < (0.001 * len(result.reflections_local))
# the reciprocal matrix
A = matrix.sqr(cryst_model.get_A())
A = random_rotation(angle_max=0.03) * A
direct_matrix = A.inverse()
cryst_model2 = Crystal(direct_matrix[0:3],
direct_matrix[3:6],
direct_matrix[6:9],
space_group=space_group)
experiment.crystal = cryst_model2
result = compare_global_local(experiment, predicted_reflections,
miller_indices)
# check that the local indexing did a better job given the errors in the basis vectors
assert result.misindexed_local <= result.misindexed_global, (
result.misindexed_local, result.misindexed_global)
assert result.misindexed_local < 0.01 * result.correct_local
assert result.correct_local > result.correct_global
# usually the number misindexed is much smaller than this
assert result.misindexed_local < (0.001 * len(result.reflections_local))
def run(space_group_info):
datablock_json = os.path.join(
dials_regression, "indexing_test_data",
"i04_weak_data", "datablock_orig.json")
datablock = load.datablock(datablock_json, check_format=False)[0]
sweep = datablock.extract_imagesets()[0]
sweep._indices = sweep._indices[:20]
sweep.set_scan(sweep.get_scan()[:20])
import random
space_group = space_group_info.group()
unit_cell = space_group_info.any_compatible_unit_cell(volume=random.uniform(1e4,1e6))
crystal_symmetry = crystal.symmetry(unit_cell=unit_cell,
space_group=space_group)
crystal_symmetry.show_summary()
# the reciprocal matrix
B = matrix.sqr(unit_cell.fractionalization_matrix()).transpose()
U = random_rotation()
A = U * B
direct_matrix = A.inverse()
cryst_model = crystal_model(direct_matrix[0:3],
direct_matrix[3:6],
direct_matrix[6:9],
space_group=space_group)
experiment = Experiment(imageset=sweep,
beam=sweep.get_beam(),
detector=sweep.get_detector(),
goniometer=sweep.get_goniometer(),
scan=sweep.get_scan(),
crystal=cryst_model)
predicted_reflections = flex.reflection_table.from_predictions(
experiment)
use_fraction = 0.3
use_sel = flex.random_selection(
len(predicted_reflections), int(use_fraction*len(predicted_reflections)))
predicted_reflections = predicted_reflections.select(use_sel)
miller_indices = predicted_reflections['miller_index']
miller_set = miller.set(
crystal_symmetry, miller_indices, anomalous_flag=True)
predicted_reflections['xyzobs.mm.value'] = predicted_reflections['xyzcal.mm']
predicted_reflections['id'] = flex.int(len(predicted_reflections), 0)
from dials.algorithms.indexing.indexer import indexer_base
indexer_base.map_centroids_to_reciprocal_space(
predicted_reflections, sweep.get_detector(), sweep.get_beam(),
sweep.get_goniometer())
# check that local and global indexing worked equally well in absence of errors
result = compare_global_local(experiment, predicted_reflections,
miller_indices)
assert result.misindexed_local == 0
assert result.misindexed_global == 0
a, b, c = cryst_model.get_real_space_vectors()
relative_error = 0.02
a *= (1+relative_error)
b *= (1+relative_error)
c *= (1+relative_error)
cryst_model2 = crystal_model(a, b, c, space_group=space_group)
experiment.crystal = cryst_model2
result = compare_global_local(experiment, predicted_reflections,
miller_indices)
# check that the local indexing did a better job given the errors in the basis vectors
#assert result.misindexed_local < result.misindexed_global
assert result.misindexed_local == 0
assert result.correct_local > result.correct_global
# usually the number misindexed is much smaller than this
assert result.misindexed_local < (0.001 * len(result.reflections_local))
# the reciprocal matrix
A = cryst_model.get_A()
A = random_rotation(angle_max=0.03) * A
direct_matrix = A.inverse()
cryst_model2 = crystal_model(direct_matrix[0:3],
direct_matrix[3:6],
direct_matrix[6:9],
space_group=space_group)
experiment.crystal = cryst_model2
result = compare_global_local(experiment, predicted_reflections,
miller_indices)
# check that the local indexing did a better job given the errors in the basis vectors
assert result.misindexed_local <= result.misindexed_global, (
result.misindexed_local, result.misindexed_global)
assert result.misindexed_local < 0.01 * result.correct_local
assert result.correct_local > result.correct_global
# usually the number misindexed is much smaller than this
assert result.misindexed_local < (0.001 * len(result.reflections_local))
def test_assign_indices(dials_regression, space_group_symbol):
experiments_json = os.path.join(dials_regression, "indexing_test_data",
"i04_weak_data", "datablock_orig.json")
experiments = load.experiment_list(experiments_json, check_format=False)
sweep = experiments.imagesets()[0]
sweep = sweep[:20]
# set random seeds so tests more reliable
seed = 54321
random.seed(seed)
flex.set_random_seed(seed)
space_group_info = sgtbx.space_group_info(symbol=space_group_symbol)
space_group = space_group_info.group()
unit_cell = space_group_info.any_compatible_unit_cell(
volume=random.uniform(1e4, 1e6))
crystal_symmetry = crystal.symmetry(unit_cell=unit_cell,
space_group=space_group)
crystal_symmetry.show_summary()
# the reciprocal matrix
B = matrix.sqr(unit_cell.fractionalization_matrix()).transpose()
U = random_rotation()
A = U * B
direct_matrix = A.inverse()
cryst_model = Crystal(
direct_matrix[0:3],
direct_matrix[3:6],
direct_matrix[6:9],
space_group=space_group,
)
experiment = Experiment(
imageset=sweep,
beam=sweep.get_beam(),
detector=sweep.get_detector(),
goniometer=sweep.get_goniometer(),
scan=sweep.get_scan(),
crystal=cryst_model,
)
predicted_reflections = flex.reflection_table.from_predictions(experiment)
use_fraction = 0.3
use_sel = flex.random_selection(
len(predicted_reflections),
int(use_fraction * len(predicted_reflections)))
predicted_reflections = predicted_reflections.select(use_sel)
miller_indices = predicted_reflections["miller_index"]
predicted_reflections["xyzobs.mm.value"] = predicted_reflections[
"xyzcal.mm"]
predicted_reflections["id"] = flex.int(len(predicted_reflections), 0)
predicted_reflections.map_centroids_to_reciprocal_space(
sweep.get_detector(), sweep.get_beam(), sweep.get_goniometer())
# check that local and global indexing worked equally well in absence of errors
result = CompareGlobalLocal(experiment, predicted_reflections,
miller_indices)
assert result.misindexed_local == 0
assert result.misindexed_global == 0
a, b, c = map(matrix.col, cryst_model.get_real_space_vectors())
relative_error = 0.02
a *= 1 + relative_error
b *= 1 + relative_error
c *= 1 + relative_error
cryst_model2 = Crystal(a, b, c, space_group=space_group)
experiment.crystal = cryst_model2
result = CompareGlobalLocal(experiment, predicted_reflections,
miller_indices)
# check that the local indexing did a better job given the errors in the basis vectors
# assert result.misindexed_local < result.misindexed_global
assert result.misindexed_local == 0
assert result.correct_local > result.correct_global
# usually the number misindexed is much smaller than this
assert result.misindexed_local < (0.001 * len(result.reflections_local))
# the reciprocal matrix
A = matrix.sqr(cryst_model.get_A())
A = random_rotation(angle_max=0.5) * A
direct_matrix = A.inverse()
cryst_model2 = Crystal(
direct_matrix[0:3],
direct_matrix[3:6],
direct_matrix[6:9],
space_group=space_group,
)
experiment.crystal = cryst_model2
result = CompareGlobalLocal(experiment, predicted_reflections,
miller_indices)
# check that the local indexing did a better job given the errors in the basis vectors
assert result.misindexed_local <= result.misindexed_global, (
result.misindexed_local,
result.misindexed_global,
)
assert result.misindexed_local < 0.01 * result.correct_local
assert result.correct_local >= result.correct_global
# usually the number misindexed is much smaller than this
assert result.misindexed_local < (0.001 * len(result.reflections_local))
