def test_raise_exception_when_excluding_non_existing_dataset(
experiments_024, reflections_024
):
with pytest.raises(ValueError):
experiments, refl = select_datasets_on_ids(
experiments_024, reflections_024, exclude_datasets=["1"]
)
def remove_bad_data(self):
"""Remove any target model/mtz data and any datasets which were removed
from the scaler during scaling."""
# first remove target refl/exps
if (self.params.scaling_options.target_model
or self.params.scaling_options.target_mtz
or self.params.scaling_options.only_target):
self.experiments = self.experiments[:-1]
self.reflections = self.reflections[:-1]
# remove any bad datasets:
removed_ids = self.scaler.removed_datasets
if removed_ids:
logger.info("deleting removed datasets from memory: %s",
removed_ids)
expids = list(self.experiments.identifiers())
locs_in_list = [expids.index(expid) for expid in removed_ids]
self.experiments, self.reflections = select_datasets_on_ids(
self.experiments,
self.reflections,
exclude_datasets=locs_in_list)
# also remove negative scales (or scales below 0.001)
n = 0
for table in self.reflections:
bad_sf = table["inverse_scale_factor"] < 0.001
n += bad_sf.count(True)
table.set_flags(bad_sf, table.flags.excluded_for_scaling)
if n > 0:
logger.info("%s reflections excluded: scale factor < 0.001", n)
def test_exclude_specific_datasets_using_id(experiments_024, reflections_024):
experiments, refl = select_datasets_on_ids(
experiments_024, reflections_024, exclude_datasets=["0"]
)
assert len(refl) == 2
assert list(experiments.identifiers()) == ["2", "4"]
assert len(experiments) == 2
def test_raise_exception_when_not_all_identifiers_set(experiments, reflections_024):
experiments[0].identifier = "0"
experiments[1].identifier = "2"
with pytest.raises(ValueError):
exp, refl = select_datasets_on_ids(
experiments, reflections_024, use_datasets=["2"]
)
def test_select_specific_datasets_using_id(experiments_024, reflections_024):
use_datasets = ["0", "2"]
experiments, refl = select_datasets_on_ids(
experiments_024, reflections_024, use_datasets=use_datasets
)
assert len(experiments) == 2
assert len(refl) == 2
assert list(experiments.identifiers()) == ["0", "2"]
def test_raise_exception_when_selecting_and_excluding_datasets_at_same_time(
experiments_024, reflections_024):
with pytest.raises(ValueError):
experiments, refl = select_datasets_on_ids(
experiments_024,
reflections_024,
use_datasets=["2", "4"],
exclude_datasets=["0"],
)
def _filter_min_reflections(self, experiments, reflections):
identifiers = []
for expt, refl in zip(experiments, reflections):
if len(refl) >= self.params.min_reflections:
identifiers.append(expt.identifier)
return select_datasets_on_ids(experiments,
reflections,
use_datasets=identifiers)
def test_correct_handling_with_multi_dataset_table(experiments_024):
reflections = flex.reflection_table()
reflections["id"] = flex.int([0, 1, 2])
reflections.experiment_identifiers()[0] = "0"
reflections.experiment_identifiers()[1] = "2"
reflections.experiment_identifiers()[2] = "4"
exp, refl = select_datasets_on_ids(
experiments_024, [reflections], exclude_datasets=["2"]
)
assert list(refl[0].experiment_identifiers().values()) == ["0", "4"]
assert list(refl[0]["id"]) == [0, 2]
def __init__(self, experiments, reflections, params=None):
super(cosym, self).__init__(
events=["run_cosym", "performed_unit_cell_clustering"])
if params is None:
params = phil_scope.extract()
self.params = params
self._experiments, self._reflections = self._filter_min_reflections(
experiments, reflections)
# map experiments and reflections to primitive setting
self._experiments, self._reflections = self._map_to_primitive(
self._experiments, self._reflections)
if len(self._experiments) > 1:
# perform unit cell clustering
identifiers = self._unit_cell_clustering(self._experiments)
if len(identifiers) < len(self._experiments):
logger.info(
"Selecting subset of %i datasets for cosym analysis: %s",
len(identifiers),
str(identifiers),
)
self._experiments, self._reflections = select_datasets_on_ids(
self._experiments,
self._reflections,
use_datasets=identifiers)
self._experiments, self._reflections = self._map_to_minimum_cell(
self._experiments, self._reflections)
# transform models into miller arrays
datasets = filtered_arrays_from_experiments_reflections(
self.experiments,
self.reflections,
outlier_rejection_after_filter=False,
partiality_threshold=params.partiality_threshold,
)
self.cosym_analysis = CosymAnalysis(datasets, self.params)
def _map_to_primitive(self, experiments, reflections):
identifiers = []
for expt, refl in zip(experiments, reflections):
cb_op_to_primitive = (expt.crystal.get_crystal_symmetry().
change_of_basis_op_to_primitive_setting())
sel = expt.crystal.get_space_group().is_sys_absent(
refl["miller_index"])
if sel.count(True):
logger.info(
"Eliminating %i systematic absences for experiment %s",
sel.count(True),
expt.identifier,
)
refl = refl.select(~sel)
refl["miller_index"] = cb_op_to_primitive.apply(
refl["miller_index"])
expt.crystal = expt.crystal.change_basis(cb_op_to_primitive)
identifiers.append(expt.identifier)
return select_datasets_on_ids(experiments,
reflections,
use_datasets=identifiers)
def remove_unwanted_datasets(self):
"""Remove any target model/mtz data and any datasets which were removed
from the scaler during scaling."""
# first remove target refl/exps
if (self.params.scaling_options.target_model
or self.params.scaling_options.target_mtz
or self.params.scaling_options.only_target):
self.experiments = self.experiments[:-1]
self.reflections = self.reflections[:-1]
# remove any bad datasets:
removed_ids = self.scaler.removed_datasets
if removed_ids:
logger.info("deleting removed datasets from memory: %s",
removed_ids)
expids = list(self.experiments.identifiers())
locs_in_list = []
for id_ in removed_ids:
locs_in_list.append(expids.index(id_))
self.experiments, self.reflections = select_datasets_on_ids(
self.experiments,
self.reflections,
exclude_datasets=removed_ids)
def remove_image_ranges_below_cutoff(
experiments,
reflections,
ids_to_remove,
image_group_to_expid_and_range,
expid_to_image_groups,
results_summary,
):
"""Remove image ranges from the datasets."""
n_valid_reflections = reflections.get_flags(
reflections.flags.bad_for_scaling, all=False).count(False)
experiments_to_delete = []
exclude_images = []
image_ranges_removed = [] # track for results summary
n_removed_this_cycle = 1
while n_removed_this_cycle != 0:
other_potential_ids_to_remove = []
n_removed_this_cycle = 0
for id_ in sorted(ids_to_remove):
exp_id, image_range = image_group_to_expid_and_range[
id_] # numerical id
identifier = reflections.experiment_identifiers()[exp_id]
if expid_to_image_groups[exp_id][-1] == id_: # is last group
image_ranges_removed.append([image_range, exp_id])
logger.info(
"Removing image range %s from experiment %s",
image_range,
identifier,
)
exclude_images.append([
identifier + ":" + str(image_range[0]) + ":" +
str(image_range[1])
])
del expid_to_image_groups[exp_id][-1]
n_removed_this_cycle += 1
else:
other_potential_ids_to_remove.append(id_)
ids_to_remove = other_potential_ids_to_remove
for id_ in other_potential_ids_to_remove:
exp_id, image_range = image_group_to_expid_and_range[id_]
identifier = reflections.experiment_identifiers()[exp_id]
logger.info(
"""Image range %s from experiment %s is below the cutoff, but not at the end of a sweep.""",
image_range,
identifier,
)
# Now remove individual batches
if -1 in reflections["id"]:
reflections = reflections.select(reflections["id"] != -1)
reflection_list = reflections.split_by_experiment_id()
reflection_list, experiments = exclude_image_ranges_for_scaling(
reflection_list, experiments, exclude_images)
# if a whole experiment has been excluded: need to remove it here
for exp in experiments:
if not exp.scan.get_valid_image_ranges(
exp.identifier): # if all removed above
experiments_to_delete.append(exp.identifier)
if experiments_to_delete:
experiments, reflection_list = select_datasets_on_ids(
experiments,
reflection_list,
exclude_datasets=experiments_to_delete)
assert len(reflection_list) == len(experiments)
output_reflections = flex.reflection_table()
for r in reflection_list:
output_reflections.extend(r)
n_valid_filtered_reflections = output_reflections.get_flags(
output_reflections.flags.bad_for_scaling, all=False).count(False)
results_summary["dataset_removal"].update({
"image_ranges_removed":
image_ranges_removed,
"experiments_fully_removed":
experiments_to_delete,
"n_reflections_removed":
n_valid_reflections - n_valid_filtered_reflections,
})
return output_reflections
def prepare_input(params, experiments, reflections):
"""Perform checks on the data and prepare the data for scaling.
Raises:
ValueError - a range of checks are made, a ValueError may be raised
for a number of reasons.
"""
#### First exclude any datasets, before the dataset is split into
#### individual reflection tables and expids set.
if (params.dataset_selection.exclude_datasets
or params.dataset_selection.use_datasets):
experiments, reflections = select_datasets_on_ids(
experiments,
reflections,
params.dataset_selection.exclude_datasets,
params.dataset_selection.use_datasets,
)
ids = flex.size_t()
for r in reflections:
ids.extend(r.experiment_identifiers().keys())
logger.info(
"\nDataset ids for retained datasets are: %s \n",
",".join(str(i) for i in ids),
)
#### Split the reflections tables into a list of reflection tables,
#### with one table per experiment.
logger.info("Checking for the existence of a reflection table \n"
"containing multiple datasets \n")
reflections = parse_multiple_datasets(reflections)
logger.info(
"Found %s reflection tables & %s experiments in total.",
len(reflections),
len(experiments),
)
if len(experiments) != len(reflections):
raise ValueError(
"Mismatched number of experiments and reflection tables found.")
#### Assign experiment identifiers.
experiments, reflections = assign_unique_identifiers(
experiments, reflections)
ids = itertools.chain.from_iterable(r.experiment_identifiers().keys()
for r in reflections)
logger.info("\nDataset ids are: %s \n", ",".join(str(i) for i in ids))
for r in reflections:
r.unset_flags(flex.bool(len(r), True), r.flags.bad_for_scaling)
r.unset_flags(flex.bool(r.size(), True), r.flags.scaled)
reflections, experiments = exclude_image_ranges_for_scaling(
reflections, experiments, params.exclude_images)
#### Allow checking of consistent indexing, useful for
#### targeted / incremental scaling.
if params.scaling_options.check_consistent_indexing:
logger.info("Running dials.cosym to check consistent indexing:\n")
cosym_params = cosym_phil_scope.extract()
cosym_params.nproc = params.scaling_options.nproc
cosym_instance = cosym(experiments, reflections, cosym_params)
cosym_instance.run()
experiments = cosym_instance.experiments
reflections = cosym_instance.reflections
logger.info("Finished running dials.cosym, continuing with scaling.\n")
#### Make sure all experiments in same space group
sgs = [
expt.crystal.get_space_group().type().number() for expt in experiments
]
if len(set(sgs)) > 1:
raise ValueError("""The experiments have different space groups:
space group numbers found: %s
Please reanalyse the data so that space groups are consistent,
(consider using dials.reindex, dials.symmetry or dials.cosym) or
remove incompatible experiments (using the option exclude_datasets=)"""
% ", ".join(map(str, set(sgs))))
logger.info(
"Space group being used during scaling is %s",
experiments[0].crystal.get_space_group().info(),
)
#### If doing targeted scaling, extract data and append an experiment
#### and reflection table to the lists
if params.scaling_options.target_model:
logger.info("Extracting data from structural model.")
exp, reflection_table = create_datastructures_for_structural_model(
reflections, experiments, params.scaling_options.target_model)
experiments.append(exp)
reflections.append(reflection_table)
elif params.scaling_options.target_mtz:
logger.info("Extracting data from merged mtz.")
exp, reflection_table = create_datastructures_for_target_mtz(
experiments, params.scaling_options.target_mtz)
experiments.append(exp)
reflections.append(reflection_table)
#### Perform any non-batch cutting of the datasets, including the target dataset
best_unit_cell = params.reflection_selection.best_unit_cell
if best_unit_cell is None:
best_unit_cell = determine_best_unit_cell(experiments)
for reflection in reflections:
if params.cut_data.d_min or params.cut_data.d_max:
d = best_unit_cell.d(reflection["miller_index"])
if params.cut_data.d_min:
sel = d < params.cut_data.d_min
reflection.set_flags(sel,
reflection.flags.user_excluded_in_scaling)
if params.cut_data.d_max:
sel = d > params.cut_data.d_max
reflection.set_flags(sel,
reflection.flags.user_excluded_in_scaling)
if params.cut_data.partiality_cutoff and "partiality" in reflection:
reflection.set_flags(
reflection["partiality"] < params.cut_data.partiality_cutoff,
reflection.flags.user_excluded_in_scaling,
)
return params, experiments, reflections
def test_selecting_everything_is_identity_function(experiments_024, reflections_024):
exp, refl = select_datasets_on_ids(experiments_024, reflections_024)
assert exp is experiments_024
assert refl is reflections_024
