def __init__(self, d_star_sq, target_n_per_bin=20, max_slots=20, min_slots=5):
n_slots = len(d_star_sq) // target_n_per_bin
if max_slots is not None:
n_slots = min(n_slots, max_slots)
if min_slots is not None:
n_slots = max(n_slots, min_slots)
self.bins = []
n_per_bin = len(d_star_sq) / n_slots
d_star_sq_sorted = flex.sorted(d_star_sq)
d_sorted = uctbx.d_star_sq_as_d(d_star_sq_sorted)
d_max = d_sorted[0]
for i in range(n_slots):
d_min = d_sorted[nint((i + 1) * n_per_bin) - 1]
self.bins.append(Slot(d_min, d_max))
d_max = d_min
def __init__(self, d_star_sq, target_n_per_bin=20, max_slots=20, min_slots=5):
from libtbx.math_utils import nearest_integer as nint
n_slots = len(d_star_sq)//target_n_per_bin
if max_slots is not None:
n_slots = min(n_slots, max_slots)
if min_slots is not None:
n_slots = max(n_slots, min_slots)
self.bins = []
n_per_bin = len(d_star_sq)/n_slots
d_star_sq_sorted = flex.sorted(d_star_sq)
d_sorted = uctbx.d_star_sq_as_d(d_star_sq_sorted)
d_max = d_sorted[0]
for i in range(n_slots):
d_min = d_sorted[nint((i+1)*n_per_bin)-1]
self.bins.append(slot(d_min, d_max))
d_max = d_min
def estimate_gain(imageset,
kernel_size=(10, 10),
output_gain_map=None,
max_images=1):
detector = imageset.get_detector()
from dials.algorithms.image.threshold import DispersionThresholdDebug
gains = flex.double()
for image_no in range(len(imageset)):
raw_data = imageset.get_raw_data(image_no)
gain_value = 1
gain_map = [
flex.double(raw_data[i].accessor(), gain_value)
for i in range(len(detector))
]
mask = imageset.get_mask(image_no)
min_local = 0
# dummy values, shouldn't affect results
nsigma_b = 6
nsigma_s = 3
global_threshold = 0
kabsch_debug_list = [
DispersionThresholdDebug(
raw_data[i_panel].as_double(),
mask[i_panel],
gain_map[i_panel],
kernel_size,
nsigma_b,
nsigma_s,
global_threshold,
min_local,
) for i_panel in range(len(detector))
]
dispersion = flex.double()
for kabsch in kabsch_debug_list:
dispersion.extend(kabsch.index_of_dispersion().as_1d())
sorted_dispersion = flex.sorted(dispersion)
from libtbx.math_utils import nearest_integer as nint
q1 = sorted_dispersion[nint(len(sorted_dispersion) / 4)]
q2 = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
q3 = sorted_dispersion[nint(len(sorted_dispersion) * 3 / 4)]
iqr = q3 - q1
print(f"q1, q2, q3: {q1:.2f}, {q2:.2f}, {q3:.2f}")
if iqr == 0.0:
raise Sorry(
"Unable to robustly estimate the variation of pixel values.")
inlier_sel = (sorted_dispersion >
(q1 - 1.5 * iqr)) & (sorted_dispersion <
(q3 + 1.5 * iqr))
sorted_dispersion = sorted_dispersion.select(inlier_sel)
gain = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
print(f"Estimated gain: {gain:.2f}")
gains.append(gain)
if image_no == 0:
gain0 = gain
if image_no + 1 >= max_images:
break
if len(gains) > 1:
stats = flex.mean_and_variance(gains)
print("Average gain: %.2f +/- %.2f" %
(stats.mean(), stats.unweighted_sample_standard_deviation()))
if output_gain_map:
if len(gains) > 1:
raw_data = imageset.get_raw_data(0)
# write the gain map
gain_map = flex.double(flex.grid(raw_data[0].all()), gain0)
with open(output_gain_map, "wb") as fh:
pickle.dump(gain_map, fh, protocol=pickle.HIGHEST_PROTOCOL)
return gain0
def estimate_gain(imageset, kernel_size=(10,10), output_gain_map=None):
detector = imageset.get_detector()
from dials.algorithms.image.threshold import KabschDebug
raw_data = imageset.get_raw_data(0)
gain_value = 1
gain_map = [flex.double(raw_data[i].accessor(), gain_value)
for i in range(len(detector))]
mask = imageset.get_mask(0)
min_local = 0
# dummy values, shouldn't affect results
nsigma_b = 6
nsigma_s = 3
global_threshold = 0
kabsch_debug_list = []
for i_panel in range(len(detector)):
kabsch_debug_list.append(
KabschDebug(
raw_data[i_panel].as_double(), mask[i_panel], gain_map[i_panel],
kernel_size, nsigma_b, nsigma_s, global_threshold, min_local))
dispersion = flex.double()
for kabsch in kabsch_debug_list:
dispersion.extend(kabsch.coefficient_of_variation().as_1d())
sorted_dispersion = flex.sorted(dispersion)
from libtbx.math_utils import nearest_integer as nint
q1 = sorted_dispersion[nint(len(sorted_dispersion)/4)]
q2 = sorted_dispersion[nint(len(sorted_dispersion)/2)]
q3 = sorted_dispersion[nint(len(sorted_dispersion)*3/4)]
iqr = q3-q1
print "q1, q2, q3: %.2f, %.2f, %.2f" %(q1, q2, q3)
inlier_sel = (sorted_dispersion > (q1 - 1.5*iqr)) & (sorted_dispersion < (q3 + 1.5*iqr))
sorted_dispersion = sorted_dispersion.select(inlier_sel)
gain = sorted_dispersion[nint(len(sorted_dispersion)/2)]
print "Estimated gain: %.2f" % gain
if output_gain_map:
# write the gain map
import cPickle as pickle
gain_map = flex.double(flex.grid(raw_data[0].all()), gain)
pickle.dump(gain_map, open(output_gain_map, "w"),
protocol=pickle.HIGHEST_PROTOCOL)
if 0:
sel = flex.random_selection(population_size=len(sorted_dispersion), sample_size=10000)
sorted_dispersion = sorted_dispersion.select(sel)
from matplotlib import pyplot
pyplot.scatter(range(len(sorted_dispersion)), sorted_dispersion)
pyplot.ylim(0, 10)
pyplot.show()
return gain
def estimate_gain(imageset,
kernel_size=(10, 10),
output_gain_map=None,
max_images=1):
detector = imageset.get_detector()
from dials.algorithms.image.threshold import DispersionThresholdDebug
gains = flex.double()
for image_no in xrange(len(imageset)):
raw_data = imageset.get_raw_data(image_no)
#from IPython import embed; embed()
#this_data = raw_data[0]
#raw_data = (this_data + 80),
NSQ = 200
small_section = raw_data[0].matrix_copy_block(400, 400, NSQ, NSQ)
print("This small section", len(small_section), "mean ist",
flex.mean(small_section.as_double()))
raw_data = (small_section, )
gain_value = 1
gain_map = [
flex.double(raw_data[i].accessor(), gain_value)
for i in range(len(detector))
]
mask = imageset.get_mask(image_no)
mask = (mask[0].matrix_copy_block(400, 400, NSQ, NSQ)),
#from IPython import embed; embed()
min_local = 0
# dummy values, shouldn't affect results
nsigma_b = 6
nsigma_s = 3
global_threshold = 0
kabsch_debug_list = []
for i_panel in range(len(detector)):
kabsch_debug_list.append(
DispersionThresholdDebug(raw_data[i_panel].as_double(),
mask[i_panel], gain_map[i_panel],
kernel_size, nsigma_b, nsigma_s,
global_threshold, min_local))
dispersion = flex.double()
for ipix in range(5, NSQ - 15):
for spix in range(5, NSQ - 15):
data = small_section.matrix_copy_block(ipix, spix, 10,
10).as_double()
datasq = data * data
means = flex.mean(data)
var = flex.mean(datasq) - (means)**2
#print(ipix,spix,var,var/means)
dispersion.append(var / means)
if True:
dispersion = flex.double()
for kabsch in kabsch_debug_list:
a_section = kabsch.index_of_dispersion().matrix_copy_block(
5, 5, NSQ - 15, NSQ - 15)
print("mean of a_section", flex.mean(a_section))
dispersion.extend(a_section.as_1d())
#ST = flex.mean_and_variance(dispersion)
#from IPython import embed; embed()
sorted_dispersion = flex.sorted(dispersion)
from libtbx.math_utils import nearest_integer as nint
q1 = sorted_dispersion[nint(len(sorted_dispersion) / 4)]
q2 = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
q3 = sorted_dispersion[nint(len(sorted_dispersion) * 3 / 4)]
iqr = q3 - q1
print("q1, q2, q3: %.2f, %.2f, %.2f" % (q1, q2, q3))
if iqr == 0.0:
raise Sorry(
'Unable to robustly estimate the variation of pixel values.')
inlier_sel = (sorted_dispersion >
(q1 - 1.5 * iqr)) & (sorted_dispersion <
(q3 + 1.5 * iqr))
sorted_dispersion = sorted_dispersion.select(inlier_sel)
gain = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
print("Estimated gain: %.2f" % gain)
gains.append(gain)
if image_no == 0:
gain0 = gain
if image_no + 1 >= max_images:
break
if len(gains) > 1:
stats = flex.mean_and_variance(gains)
print("Average gain: %.2f +/- %.2f" %
(stats.mean(), stats.unweighted_sample_standard_deviation()))
if output_gain_map:
if len(gains) > 1:
raw_data = imageset.get_raw_data(0)
# write the gain map
import six.moves.cPickle as pickle
gain_map = flex.double(flex.grid(raw_data[0].all()), gain0)
with open(output_gain_map, "wb") as fh:
pickle.dump(gain_map, fh, protocol=pickle.HIGHEST_PROTOCOL)
if 0:
sel = flex.random_selection(population_size=len(sorted_dispersion),
sample_size=10000)
sorted_dispersion = sorted_dispersion.select(sel)
from matplotlib import pyplot
pyplot.scatter(range(len(sorted_dispersion)), sorted_dispersion)
pyplot.ylim(0, 10)
pyplot.show()
return gain0
def index_reflections_local(reflections,
experiments,
d_min=None,
epsilon=0.05,
delta=8,
l_min=0.8,
nearest_neighbours=20):
from scitbx import matrix
from libtbx.math_utils import nearest_integer as nint
reciprocal_lattice_points = reflections['rlp']
if 'miller_index' not in reflections:
reflections['miller_index'] = flex.miller_index(len(reflections))
if d_min is not None:
d_spacings = 1 / reciprocal_lattice_points.norms()
inside_resolution_limit = d_spacings > d_min
else:
inside_resolution_limit = flex.bool(reciprocal_lattice_points.size(),
True)
sel = inside_resolution_limit & (reflections['id'] == -1)
isel = sel.iselection()
rlps = reciprocal_lattice_points.select(isel)
refs = reflections.select(isel)
phi = refs['xyzobs.mm.value'].parts()[2]
if len(rlps) <= nearest_neighbours:
from libtbx.utils import Sorry
raise Sorry(
"index_assignment.local.nearest_neighbour must be smaller than the number of accepted reflections (%d)"
% len(rlps))
diffs = []
norms = []
hkl_ints = []
UB_matrices = flex.mat3_double(
[cm.get_A() for cm in experiments.crystals()])
result = AssignIndicesLocal(rlps,
phi,
UB_matrices,
epsilon=epsilon,
delta=delta,
l_min=l_min,
nearest_neighbours=nearest_neighbours)
miller_indices = result.miller_indices()
crystal_ids = result.crystal_ids()
hkl = miller_indices.as_vec3_double().iround()
assert miller_indices.select(crystal_ids < 0).all_eq((0, 0, 0))
for i_cryst in set(crystal_ids):
if i_cryst < 0: continue
A = experiments[i_cryst].crystal.get_A()
A_inv = A.inverse()
cryst_sel = crystal_ids == i_cryst
ref_sel = refs.select(cryst_sel)
rlp_sel = rlps.select(cryst_sel)
hkl_sel = hkl.select(cryst_sel).as_vec3_double()
d_sel = 1 / rlp_sel.norms()
d_perm = flex.sort_permutation(d_sel, reverse=True)
hf_0 = A_inv * rlp_sel[d_perm[0]]
h_0 = matrix.col([nint(j) for j in hf_0.elems])
offset = h_0 - matrix.col(hkl_sel[d_perm[0]])
#print "offset:", offset.elems
h = hkl_sel + flex.vec3_double(hkl_sel.size(), offset.elems)
refs['miller_index'].set_selected(cryst_sel,
flex.miller_index(list(h.iround())))
refs['id'].set_selected(cryst_sel, i_cryst)
crystal_ids.set_selected(crystal_ids < 0, -1)
refs['id'] = crystal_ids
refs['miller_index'].set_selected(crystal_ids < 0, (0, 0, 0))
reflections['miller_index'].set_selected(isel, refs['miller_index'])
reflections['id'].set_selected(isel, refs['id'])
reflections.set_flags(reflections['miller_index'] != (0, 0, 0),
reflections.flags.indexed)
def estimate_gain(raw_data,
offset=0,
algorithm="kabsch",
kernel_size=(10, 10),
output_gain_map=None,
max_images=1):
raw_data = (raw_data - offset),
from dials.algorithms.image.threshold import DispersionThresholdDebug
gains = flex.double()
if True:
NSQ = 200
ANCHOR = 400
small_section = raw_data[0].matrix_copy_block(ANCHOR, ANCHOR, NSQ, NSQ)
print("This small section", len(small_section), "mean is",
flex.mean(small_section.as_double()))
raw_data = (small_section, )
gain_value = 1
gain_map = [
flex.double(raw_data[i].accessor(), gain_value)
for i in range(len(raw_data))
]
mask = [
flex.bool(raw_data[i].accessor(), True)
for i in range(len(raw_data))
]
min_local = 0
# dummy values, shouldn't affect results
nsigma_b = 6
nsigma_s = 3
global_threshold = 0
kabsch_debug_list = []
for i_panel in range(1):
kabsch_debug_list.append(
DispersionThresholdDebug(raw_data[i_panel].as_double(),
mask[i_panel], gain_map[i_panel],
kernel_size, nsigma_b, nsigma_s,
global_threshold, min_local))
if algorithm != "kabsch":
dispersion = flex.double()
for ipix in range(5, NSQ - 15):
for spix in range(5, NSQ - 15):
data = small_section.matrix_copy_block(ipix, spix, 10,
10).as_double()
datasq = data * data
means = flex.mean(data)
var = flex.mean(datasq) - (means)**2
dispersion.append(var / means)
else:
dispersion = flex.double()
for kabsch in kabsch_debug_list:
a_section = kabsch.index_of_dispersion().matrix_copy_block(
5, 5, NSQ - 15, NSQ - 15)
print("mean of a_section", flex.mean(a_section))
dispersion.extend(a_section.as_1d())
#ST = flex.mean_and_variance(dispersion)
#from IPython import embed; embed()
sorted_dispersion = flex.sorted(dispersion)
from libtbx.math_utils import nearest_integer as nint
q1 = sorted_dispersion[nint(len(sorted_dispersion) / 4)]
q2 = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
q3 = sorted_dispersion[nint(len(sorted_dispersion) * 3 / 4)]
iqr = q3 - q1
print("q1, q2, q3: %.2f, %.2f, %.2f" % (q1, q2, q3))
if iqr == 0.0:
raise Sorry(
'Unable to robustly estimate the variation of pixel values.')
inlier_sel = (sorted_dispersion >
(q1 - 1.5 * iqr)) & (sorted_dispersion <
(q3 + 1.5 * iqr))
sorted_dispersion = sorted_dispersion.select(inlier_sel)
gain = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
print("Estimated gain %s: %.2f" % (algorithm, gain))
gains.append(gain)
def load_image(self):
""" Reads raw image file and extracts data for conversion into pickle
format. Also estimates gain if turned on."""
# Load raw image or image pickle
try:
with misc.Capturing() as junk_output:
loaded_img = dxtbx.load(self.raw_img)
except IOError:
loaded_img = None
pass
# Extract image information
if loaded_img is not None:
raw_data = loaded_img.get_raw_data()
detector = loaded_img.get_detector()[0]
beam = loaded_img.get_beam()
scan = loaded_img.get_scan()
distance = detector.get_distance()
pixel_size = detector.get_pixel_size()[0]
overload = detector.get_trusted_range()[1]
wavelength = beam.get_wavelength()
beam_x = detector.get_beam_centre(beam.get_s0())[0]
beam_y = detector.get_beam_centre(beam.get_s0())[1]
if scan is None:
timestamp = None
if abs(beam_x - beam_y) <= 0.1 or self.params.image_conversion.square_mode == "None":
img_type = 'converted'
else:
img_type = 'unconverted'
else:
msec, sec = math.modf(scan.get_epochs()[0])
timestamp = evt_timestamp((sec,msec))
if self.params.image_conversion.beamstop != 0 or\
self.params.image_conversion.beam_center.x != 0 or\
self.params.image_conversion.beam_center.y != 0 or\
self.params.image_conversion.rename_pickle_prefix != 'Auto' or\
self.params.image_conversion.rename_pickle_prefix != None:
img_type = 'unconverted'
# Assemble datapack
data = dpack(data=raw_data,
distance=distance,
pixel_size=pixel_size,
wavelength=wavelength,
beam_center_x=beam_x,
beam_center_y=beam_y,
ccd_image_saturation=overload,
saturated_value=overload,
timestamp=timestamp
)
#print "data: ", type(raw_data)
#print "pixel size: ", type(pixel_size)
#print 'wavelength: ', type(wavelength)
#print "beamX: ", type(beam_x)
#print "saturation: ", type(overload)
#print "timestamp: ", type(timestamp)
#for i in dir(raw_data): print i
#exit()
if scan is not None:
osc_start, osc_range = scan.get_oscillation()
img_type = 'unconverted'
if osc_start != osc_range:
data['OSC_START'] = osc_start
data['OSC_RANGE'] = osc_range
data['TIME'] = scan.get_exposure_times()[0]
# Estimate gain (or set gain to 1.00 if cannot calculate)
# Cribbed from estimate_gain.py by Richard Gildea
if self.params.advanced.estimate_gain:
try:
from dials.algorithms.image.threshold import KabschDebug
raw_data = [raw_data]
gain_value = 1
kernel_size=(10,10)
gain_map = [flex.double(raw_data[i].accessor(), gain_value)
for i in range(len(loaded_img.get_detector()))]
mask = loaded_img.get_mask()
min_local = 0
# dummy values, shouldn't affect results
nsigma_b = 6
nsigma_s = 3
global_threshold = 0
kabsch_debug_list = []
for i_panel in range(len(loaded_img.get_detector())):
kabsch_debug_list.append(
KabschDebug(
raw_data[i_panel].as_double(), mask[i_panel], gain_map[i_panel],
kernel_size, nsigma_b, nsigma_s, global_threshold, min_local))
dispersion = flex.double()
for kabsch in kabsch_debug_list:
dispersion.extend(kabsch.coefficient_of_variation().as_1d())
sorted_dispersion = flex.sorted(dispersion)
from libtbx.math_utils import nearest_integer as nint
q1 = sorted_dispersion[nint(len(sorted_dispersion)/4)]
q2 = sorted_dispersion[nint(len(sorted_dispersion)/2)]
q3 = sorted_dispersion[nint(len(sorted_dispersion)*3/4)]
iqr = q3-q1
inlier_sel = (sorted_dispersion > (q1 - 1.5*iqr)) & (sorted_dispersion < (q3 + 1.5*iqr))
sorted_dispersion = sorted_dispersion.select(inlier_sel)
self.gain = sorted_dispersion[nint(len(sorted_dispersion)/2)]
except IndexError:
self.gain = 1.0
else:
self.gain = 1.0
else:
data = None
return data, img_type
class SingleImage(object):
def __init__(self, img, init, verbose=True, imported_grid=None):
""" Constructor for the SingleImage object using a raw image file or pickle
"""
# Initialize parameters
self.params = init.params
self.args = init.args
self.raw_img = img[2]
self.conv_img = img[2]
self.img_index = img[0]
self.status = None
self.fail = None
self.final = None
self.log_info = []
self.gs_results = []
self.main_log = init.logfile
self.verbose = verbose
self.hmed = self.params.cctbx.grid_search.height_median
self.amed = self.params.cctbx.grid_search.area_median
self.input_base = init.input_base
self.conv_base = init.conv_base
self.int_base = init.int_base
self.obj_base = init.obj_base
self.fin_base = init.fin_base
self.viz_base = init.viz_base
self.tmp_base = init.tmp_base
self.abort_file = os.path.join(self.int_base, '.abort.tmp')
self.obj_path = None
self.obj_file = None
self.fin_path = None
self.fin_file = None
self.viz_path = None
# ============================== SELECTION-ONLY FUNCTIONS ============================== #
def import_int_file(self, init):
""" Replaces path settings in imported image object with new settings
NEED TO RE-DO LATER """
if os.path.isfile(self.abort_file):
self.fail = 'aborted'
return self
# Generate paths to output files
self.params = init.params
self.main_log = init.logfile
self.input_base = init.input_base
self.conv_base = init.conv_base
self.int_base = init.int_base
self.obj_base = init.obj_base
self.fin_base = init.fin_base
self.viz_base = init.viz_base
self.obj_path = misc.make_image_path(self.conv_img, self.input_base,
self.obj_base)
self.obj_file = os.path.abspath(
os.path.join(
self.obj_path,
os.path.basename(self.conv_img).split('.')[0] + ".int"))
self.fin_path = misc.make_image_path(self.conv_img, self.input_base,
self.fin_base)
self.fin_file = os.path.abspath(
os.path.join(
self.fin_path,
os.path.basename(self.conv_img).split('.')[0] + "_int.pickle"))
self.final['final'] = self.fin_file
self.final['img'] = self.conv_img
self.viz_path = misc.make_image_path(self.conv_img, self.input_base,
self.viz_base)
self.viz_file = os.path.join(
self.viz_path,
os.path.basename(self.conv_img).split('.')[0] + "_int.png")
# Create actual folders (if necessary)
try:
if not os.path.isdir(self.obj_path):
os.makedirs(self.obj_path)
if not os.path.isdir(self.fin_path):
os.makedirs(self.fin_path)
if not os.path.isdir(self.viz_path):
os.makedirs(self.viz_path)
except OSError:
pass
# Grid search / integration log file
self.int_log = os.path.join(
self.fin_path,
os.path.basename(self.conv_img).split('.')[0] + '.tmp')
# Reset status to 'grid search' to pick up at selection (if no fail)
if self.fail == None:
self.status = 'bypass grid search'
return self
def determine_gs_result_file(self):
""" For 'selection-only' cctbx.xfel runs, determine where the image objects are """
if self.params.cctbx.selection.select_only.grid_search_path != None:
obj_path = os.path.abspath(
self.params.cctbx.selection.select_only.grid_search_path)
else:
run_number = int(os.path.basename(self.int_base)) - 1
obj_path = "{}/integration/{:03d}/image_objects"\
"".format(os.path.abspath(os.curdir), run_number)
gs_result_file = os.path.join(obj_path,
os.path.basename(self.obj_file))
return gs_result_file
# =============================== IMAGE IMPORT FUNCTIONS =============================== #
def load_image(self):
""" Reads raw image file and extracts data for conversion into pickle
format. Also estimates gain if turned on."""
# Load raw image or image pickle
try:
with misc.Capturing() as junk_output:
loaded_img = dxtbx.load(self.raw_img)
except IOError, e:
loaded_img = None
pass
# Extract image information
if loaded_img is not None:
raw_data = loaded_img.get_raw_data()
detector = loaded_img.get_detector()[0]
beam = loaded_img.get_beam()
scan = loaded_img.get_scan()
distance = detector.get_distance()
pixel_size = detector.get_pixel_size()[0]
overload = detector.get_trusted_range()[1]
wavelength = beam.get_wavelength()
beam_x = detector.get_beam_centre(beam.get_s0())[0]
beam_y = detector.get_beam_centre(beam.get_s0())[1]
if scan is None:
timestamp = None
img_type = 'pickle'
else:
img_type = 'raw'
msec, sec = math.modf(scan.get_epochs()[0])
timestamp = evt_timestamp((sec, msec))
# Assemble datapack
data = dpack(data=raw_data,
distance=distance,
pixel_size=pixel_size,
wavelength=wavelength,
beam_center_x=beam_x,
beam_center_y=beam_y,
ccd_image_saturation=overload,
saturated_value=overload,
timestamp=timestamp)
if scan is not None:
osc_start, osc_range = scan.get_oscillation()
if osc_start != osc_range:
data['OSC_START'] = 0 #osc_start
data['OSC_RANGE'] = 0 #osc_start
data['TIME'] = scan.get_exposure_times()[0]
else:
data = None
img_type = 'not imported'
# Estimate gain (or set gain to 1.00 if cannot calculate)
# Cribbed from estimate_gain.py by Richard Gildea
if self.params.advanced.estimate_gain:
try:
from dials.algorithms.image.threshold import KabschDebug
raw_data = [raw_data]
gain_value = 1
kernel_size = (10, 10)
gain_map = [
flex.double(raw_data[i].accessor(), gain_value)
for i in range(len(loaded_img.get_detector()))
]
mask = loaded_img.get_mask()
min_local = 0
# dummy values, shouldn't affect results: REPLACE WITH SETTINGS!
nsigma_b = 6
nsigma_s = 3
global_threshold = 0
kabsch_debug_list = []
for i_panel in range(len(loaded_img.get_detector())):
kabsch_debug_list.append(
KabschDebug(raw_data[i_panel].as_double(),
mask[i_panel], gain_map[i_panel],
kernel_size, nsigma_b, nsigma_s,
global_threshold, min_local))
dispersion = flex.double()
for kabsch in kabsch_debug_list:
dispersion.extend(
kabsch.coefficient_of_variation().as_1d())
sorted_dispersion = flex.sorted(dispersion)
from libtbx.math_utils import nearest_integer as nint
q1 = sorted_dispersion[nint(len(sorted_dispersion) / 4)]
q2 = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
q3 = sorted_dispersion[nint(len(sorted_dispersion) * 3 / 4)]
iqr = q3 - q1
inlier_sel = (sorted_dispersion >
(q1 - 1.5 * iqr)) & (sorted_dispersion <
(q3 + 1.5 * iqr))
sorted_dispersion = sorted_dispersion.select(inlier_sel)
self.gain = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
except IndexError:
self.gain = 1.0
else:
self.gain = 1.0
return data, img_type
def estimate_gain(imageset, kernel_size=(10, 10), output_gain_map=None):
detector = imageset.get_detector()
from dials.algorithms.image.threshold import KabschDebug
raw_data = imageset.get_raw_data(0)
gain_value = 1
gain_map = [
flex.double(raw_data[i].accessor(), gain_value)
for i in range(len(detector))
]
mask = imageset.get_mask(0)
min_local = 0
# dummy values, shouldn't affect results
nsigma_b = 6
nsigma_s = 3
global_threshold = 0
kabsch_debug_list = []
for i_panel in range(len(detector)):
kabsch_debug_list.append(
KabschDebug(raw_data[i_panel].as_double(), mask[i_panel],
gain_map[i_panel], kernel_size, nsigma_b, nsigma_s,
global_threshold, min_local))
dispersion = flex.double()
for kabsch in kabsch_debug_list:
dispersion.extend(kabsch.coefficient_of_variation().as_1d())
sorted_dispersion = flex.sorted(dispersion)
from libtbx.math_utils import nearest_integer as nint
q1 = sorted_dispersion[nint(len(sorted_dispersion) / 4)]
q2 = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
q3 = sorted_dispersion[nint(len(sorted_dispersion) * 3 / 4)]
iqr = q3 - q1
print "q1, q2, q3: %.2f, %.2f, %.2f" % (q1, q2, q3)
inlier_sel = (sorted_dispersion > (q1 - 1.5 * iqr)) & (sorted_dispersion <
(q3 + 1.5 * iqr))
sorted_dispersion = sorted_dispersion.select(inlier_sel)
gain = sorted_dispersion[nint(len(sorted_dispersion) / 2)]
print "Estimated gain: %.2f" % gain
if output_gain_map:
# write the gain map
import cPickle as pickle
gain_map = flex.double(flex.grid(raw_data[0].all()), gain)
pickle.dump(gain_map,
open(output_gain_map, "w"),
protocol=pickle.HIGHEST_PROTOCOL)
if 0:
sel = flex.random_selection(population_size=len(sorted_dispersion),
sample_size=10000)
sorted_dispersion = sorted_dispersion.select(sel)
from matplotlib import pyplot
pyplot.scatter(range(len(sorted_dispersion)), sorted_dispersion)
pyplot.ylim(0, 10)
pyplot.show()
return gain
def index_reflections_local(
reflections, experiments, d_min=None,
epsilon=0.05, delta=8, l_min=0.8, nearest_neighbours=20, verbosity=0):
from scitbx import matrix
from libtbx.math_utils import nearest_integer as nint
reciprocal_lattice_points = reflections['rlp']
if 'miller_index' not in reflections:
reflections['miller_index'] = flex.miller_index(len(reflections))
if d_min is not None:
d_spacings = 1/reciprocal_lattice_points.norms()
inside_resolution_limit = d_spacings > d_min
else:
inside_resolution_limit = flex.bool(reciprocal_lattice_points.size(), True)
sel = inside_resolution_limit & (reflections['id'] == -1)
isel = sel.iselection()
rlps = reciprocal_lattice_points.select(isel)
refs = reflections.select(isel)
phi = refs['xyzobs.mm.value'].parts()[2]
diffs = []
norms = []
hkl_ints = []
UB_matrices = flex.mat3_double([cm.get_A() for cm in experiments.crystals()])
result = AssignIndicesLocal(
rlps, phi, UB_matrices, epsilon=epsilon, delta=delta, l_min=l_min,
nearest_neighbours=nearest_neighbours)
miller_indices = result.miller_indices()
crystal_ids = result.crystal_ids()
n_rejects = result.n_rejects()
hkl = miller_indices.as_vec3_double().iround()
n_rejects = (crystal_ids < 0).count(True)
assert miller_indices.select(crystal_ids < 0).all_eq((0,0,0))
for i_cryst in set(crystal_ids):
if i_cryst < 0: continue
A = experiments[i_cryst].crystal.get_A()
A_inv = A.inverse()
cryst_sel = crystal_ids == i_cryst
ref_sel = refs.select(cryst_sel)
rlp_sel = rlps.select(cryst_sel)
hkl_sel = hkl.select(cryst_sel).as_vec3_double()
d_sel = 1/rlp_sel.norms()
d_perm = flex.sort_permutation(d_sel, reverse=True)
hf_0 = A_inv * rlp_sel[d_perm[0]]
h_0 = matrix.col([nint(j) for j in hf_0.elems])
offset = h_0 - matrix.col(hkl_sel[d_perm[0]])
#print "offset:", offset.elems
h = hkl_sel + flex.vec3_double(hkl_sel.size(), offset.elems)
refs['miller_index'].set_selected(
cryst_sel, flex.miller_index(list(h.iround())))
refs['id'].set_selected(cryst_sel, i_cryst)
crystal_ids.set_selected(crystal_ids < 0, -1)
refs['id'] = crystal_ids
refs['miller_index'].set_selected(crystal_ids < 0, (0,0,0))
reflections['miller_index'].set_selected(isel, refs['miller_index'])
reflections['id'].set_selected(isel, refs['id'])
reflections.set_flags(
reflections['miller_index'] != (0,0,0), reflections.flags.indexed)
if verbosity > 0:
for i_cryst, cryst in enumerate(experiments.crystals()):
info("model %i (%i reflections):" %(
i_cryst+1, (reflections['id'] == i_cryst).count(True)))
info(cryst)
info("")
info("%i unindexed reflections" %n_rejects)
def index_reflections_local(
reflections, experiments, d_min=None, epsilon=0.05, delta=8, l_min=0.8, nearest_neighbours=20
):
from scitbx import matrix
from libtbx.math_utils import nearest_integer as nint
reciprocal_lattice_points = reflections["rlp"]
if "miller_index" not in reflections:
reflections["miller_index"] = flex.miller_index(len(reflections))
if d_min is not None:
d_spacings = 1 / reciprocal_lattice_points.norms()
inside_resolution_limit = d_spacings > d_min
else:
inside_resolution_limit = flex.bool(reciprocal_lattice_points.size(), True)
sel = inside_resolution_limit & (reflections["id"] == -1)
isel = sel.iselection()
rlps = reciprocal_lattice_points.select(isel)
refs = reflections.select(isel)
phi = refs["xyzobs.mm.value"].parts()[2]
if len(rlps) <= nearest_neighbours:
from libtbx.utils import Sorry
raise Sorry(
"index_assignment.local.nearest_neighbour must be smaller than the number of accepted reflections (%d)"
% len(rlps)
)
diffs = []
norms = []
hkl_ints = []
UB_matrices = flex.mat3_double([cm.get_A() for cm in experiments.crystals()])
result = AssignIndicesLocal(
rlps, phi, UB_matrices, epsilon=epsilon, delta=delta, l_min=l_min, nearest_neighbours=nearest_neighbours
)
miller_indices = result.miller_indices()
crystal_ids = result.crystal_ids()
hkl = miller_indices.as_vec3_double().iround()
assert miller_indices.select(crystal_ids < 0).all_eq((0, 0, 0))
for i_cryst in set(crystal_ids):
if i_cryst < 0:
continue
A = experiments[i_cryst].crystal.get_A()
A_inv = A.inverse()
cryst_sel = crystal_ids == i_cryst
ref_sel = refs.select(cryst_sel)
rlp_sel = rlps.select(cryst_sel)
hkl_sel = hkl.select(cryst_sel).as_vec3_double()
d_sel = 1 / rlp_sel.norms()
d_perm = flex.sort_permutation(d_sel, reverse=True)
hf_0 = A_inv * rlp_sel[d_perm[0]]
h_0 = matrix.col([nint(j) for j in hf_0.elems])
offset = h_0 - matrix.col(hkl_sel[d_perm[0]])
# print "offset:", offset.elems
h = hkl_sel + flex.vec3_double(hkl_sel.size(), offset.elems)
refs["miller_index"].set_selected(cryst_sel, flex.miller_index(list(h.iround())))
refs["id"].set_selected(cryst_sel, i_cryst)
crystal_ids.set_selected(crystal_ids < 0, -1)
refs["id"] = crystal_ids
refs["miller_index"].set_selected(crystal_ids < 0, (0, 0, 0))
reflections["miller_index"].set_selected(isel, refs["miller_index"])
reflections["id"].set_selected(isel, refs["id"])
reflections.set_flags(reflections["miller_index"] != (0, 0, 0), reflections.flags.indexed)
