def get_data(scan_id, field='ivu_gap', intensity_field='elm_sum_all', det=None, debug=False):
"""Get data from the scan stored in the table.
from Maksim
:param scan_id: scan id from bluesky.
:param field: visualize the intensity vs. this field.
:param intensity_field: the name of the intensity field.
:param det: the name of the detector.
:param debug: a debug flag.
:return: a tuple of X, Y and timestamp values.
"""
scan, t = get_scan(scan_id)
if det:
imgs = get_images(scan, det)
im = imgs[-1]
if debug:
print(im)
table = get_table(scan)
fields = get_fields(scan)
if debug:
print(table)
print(fields)
x = table[field]
y = table[intensity_field]
return x, y, t
def _get_images(header, tag):
t = ttime.time()
images = get_images(header, tag)
t = ttime.time() - t
logger.info("Took {:.3}s to read data using get_images".format(t))
return np.array([np.asarray(im, dtype=np.uint16) for im in images])
def _get_images(header, tag):
t = ttime.time()
images = get_images(header, tag)
t = ttime.time() - t
logger.info("Took {:.3}s to read data using get_images".format(t))
for im in images:
yield np.asarray(im, dtype=np.uint16)
def test_handler_options(image_example_uid):
h = db[image_example_uid]
list(get_events(h))
list(get_table(h))
list(get_images(h, "img"))
res = list(get_events(h, fields=["img"], fill=True, handler_registry={"npy": DummyHandler}))
res = [ev for ev in res if "img" in ev["data"]]
res[0]["data"]["img"] == "dummy"
res = list(get_events(h, fields=["img"], fill=True, handler_overrides={"image": DummyHandler}))
res = [ev for ev in res if "img" in ev["data"]]
res[0]["data"]["img"] == "dummy"
res = get_table(h, ["img"], fill=True, handler_registry={"npy": DummyHandler})
assert res["img"].iloc[0] == "dummy"
res = get_table(h, ["img"], fill=True, handler_overrides={"img": DummyHandler})
assert res["img"].iloc[0] == "dummy"
res = get_images(h, "img", handler_registry={"npy": DummyHandler})
assert res[0] == "dummy"
res = get_images(h, "img", handler_override=DummyHandler)
assert res[0] == "dummy"
def _get_images(header, tag, roi=None, handler_override=None):
t = ttime.time()
images = get_images(header, tag, handler_override=handler_override)
t = ttime.time() - t
logger.info("Took %.3f seconds to read data using get_images", t)
if roi is not None:
images = _crop_images(images, roi)
return images
def pull_dark(self, header):
dark_uid = header.start.get(an_glbl.dark_field_key, None)
if dark_uid is None:
print("INFO: no dark frame is associated in this header, "
"subrraction will not be processed")
return None
else:
dark_search = {'group': 'XPD', 'uid': dark_uid}
dark_header = db(**dark_search)
dark_img = np.asarray(get_images(dark_header,
self.image_field)).squeeze()
return dark_img, dark_header[0].start.time
def test_handler_options(image_example_uid):
h = db[image_example_uid]
list(get_events(h))
list(get_table(h))
list(get_images(h, 'img'))
res = list(get_events(h, fields=['img'], fill=True,
handler_registry={'npy': DummyHandler}))
res = [ev for ev in res if 'img' in ev['data']]
res[0]['data']['img'] == 'dummy'
res = list(get_events(h, fields=['img'], fill=True,
handler_overrides={'image': DummyHandler}))
res = [ev for ev in res if 'img' in ev['data']]
res[0]['data']['img'] == 'dummy'
res = get_table(h, ['img'], fill=True,
handler_registry={'npy': DummyHandler})
assert res['img'].iloc[0] == 'dummy'
res = get_table(h, ['img'], fill=True,
handler_overrides={'img': DummyHandler})
assert res['img'].iloc[0] == 'dummy'
res = get_images(h, 'img', handler_registry={'npy': DummyHandler})
assert res[0] == 'dummy'
res = get_images(h, 'img', handler_override=DummyHandler)
assert res[0] == 'dummy'
def f(h, dryrun=False):
imgs = get_images(h, field)
# Fill in h, defer filling in N.
_template = template.format(h=h, N='{N}')
filenames = [_template.format(N=i) for i in range(len(imgs))]
# First check that none of the filenames exist.
for filename in filenames:
if os.path.isfile(filename):
raise FileExistsError("There is already a file at {}. Delete "
"it and try again.".format(filename))
if not dryrun:
# Write files.
for filename, img in zip(filenames, imgs):
tifffile.imsave(filename, np.asarray(img))
return filenames
def f(h, dryrun=False):
imgs = get_images(h, field)
# Fill in h, defer filling in N.
_template = template.format(h=h, N='{N}')
filenames = [_template.format(N=i) for i in range(len(imgs))]
# First check that none of the filenames exist.
for filename in filenames:
if os.path.isfile(filename):
raise FileExistsError("There is already a file at {}. Delete "
"it and try again.".format(filename))
if not dryrun:
# Write files.
for filename, img in zip(filenames, imgs):
tifffile.imsave(filename, np.asarray(img))
return filenames
def run_calibration(exposure=60, calibrant_file=None, wavelength=None,
detector=None, gaussian=None):
""" function to run entire calibration process.
Entire process includes: collect calibration image, trigger pyFAI
calibration process, store calibration parameters as a yaml file
under xpdUser/config_base/ and inject uid of calibration image to
following scans, until this function is run again.
Parameters
----------
exposure : int, optional
total exposure time in sec. Default is 60s
calibrant_name : str, optional
name of calibrant used, different calibrants correspond to
different d-spacing profiles. Default is 'Ni'. User can assign
different calibrant, given d-spacing file path presents
wavelength : flot, optional
current of x-ray wavelength, in angstrom. Default value is
read out from existing xpdacq.Beamtime object
detector : pyfai.detector.Detector, optional.
instance of detector which defines pxiel size in x- and
y-direction. Default is set to Perkin Elmer detector
gaussian : int, optional
gaussian width between rings, Default is 100.
"""
# default params
interactive = True
dist = 0.1
_check_obj(_REQUIRED_OBJ_LIST)
ips = get_ipython()
bto = ips.ns_table['user_global']['bt']
prun = ips.ns_table['user_global']['prun']
# print('*** current beamtime info = {} ***'.format(bto.md))
calibrant = Calibrant()
# d-spacing
if calibrant_file is not None:
calibrant.load_file(calibrant_file)
calibrant_name = os.path.split(calibrant_file)[1]
calibrant_name = os.path.splitext(calibrant_name)[0]
else:
calibrant.load_file(os.path.join(glbl.usrAnalysis_dir, 'Ni24.D'))
calibrant_name = 'Ni'
# wavelength
if wavelength is None:
_wavelength = bto['bt_wavelength']
else:
_wavelength = wavelength
calibrant.wavelength = _wavelength * 10 ** (-10)
# detector
if detector is None:
detector = Perkin()
# scan
# simplified version of Sample object
calib_collection_uid = str(uuid.uuid4())
calibration_dict = {'sample_name':calibrant_name,
'sample_composition':{calibrant_name :1},
'is_calibration': True,
'calibration_collection_uid': calib_collection_uid}
prun_uid = prun(calibration_dict, ScanPlan(bto, ct, exposure))
light_header = glbl.db[prun_uid[-1]] # last one is always light
dark_uid = light_header.start['sc_dk_field_uid']
dark_header = glbl.db[dark_uid]
# unknown signature of get_images
dark_img = np.asarray(
get_images(dark_header, glbl.det_image_field)).squeeze()
# dark_img = np.asarray(glbl.get_images(dark_header, glbl.det_image_field)).squeeze()
for ev in glbl.get_events(light_header, fill=True):
img = ev['data'][glbl.det_image_field]
img -= dark_img
# calibration
timestr = _timestampstr(time.time())
basename = '_'.join(['pyFAI_calib', calibrant_name, timestr])
w_name = os.path.join(glbl.config_base, basename) # poni name
c = Calibration(wavelength=calibrant.wavelength,
detector=detector,
calibrant=calibrant,
gaussianWidth=gaussian)
c.gui = interactive
c.basename = w_name
c.pointfile = w_name + ".npt"
c.ai = AzimuthalIntegrator(dist=dist, detector=detector,
wavelength=calibrant.wavelength)
c.peakPicker = PeakPicker(img, reconst=True, mask=detector.mask,
pointfile=c.pointfile, calibrant=calibrant,
wavelength=calibrant.wavelength)
# method=method)
if gaussian is not None:
c.peakPicker.massif.setValleySize(gaussian)
else:
c.peakPicker.massif.initValleySize()
if interactive:
c.peakPicker.gui(log=True, maximize=True, pick=True)
update_fig(c.peakPicker.fig)
c.gui_peakPicker()
c.ai.setPyFAI(**c.geoRef.getPyFAI())
c.ai.wavelength = c.geoRef.wavelength
# update until next time
glbl.calib_config_dict = c.ai.getPyFAI()
Fit2D_dict = c.ai.getFit2D()
glbl.calib_config_dict.update(Fit2D_dict)
glbl.calib_config_dict.update({'file_name':basename})
glbl.calib_config_dict.update({'time':timestr})
# FIXME: need a solution for selecting desired calibration image
# based on calibration_collection_uid later
glbl.calib_config_dict.update({'calibration_collection_uid':
calib_collection_uid})
# write yaml
yaml_name = glbl.calib_config_name
with open(os.path.join(glbl.config_base, yaml_name), 'w') as f:
yaml.dump(glbl.calib_config_dict, f)
return c.ai