def _start(self):
'''Open the image file, read the image header, copy the key / value
pairs into an internal dictionary self._header_dictionary along with
the length of the header in bytes self._header_size.'''
from iotbx.detectors.marIP import MARIPImage
self.detectorbase = MARIPImage(self._image_file)
self.detectorbase.readHeader()
def _start(self): '''Open the image file, read the image header, copy the key / value pairs into an internal dictionary self._header_dictionary along with the length of the header in bytes self._header_size.''' from iotbx.detectors.marIP import MARIPImage self.detectorbase = MARIPImage(self._image_file) self.detectorbase.readHeader()
class FormatMarIP(Format):
'''An image reading class for MarIP-format images
Positive identification: first 140 bytes contain the string "mar research"
'''
@staticmethod
def understand(image_file):
try:
tag = FormatMarIP.open_file(image_file, 'rb').read(140)
except IOError:
return False
return tag.find("mar research") > 0
def __init__(self, image_file, **kwargs):
'''Initialise the image structure from the given file.'''
from dxtbx import IncorrectFormatError
if not self.understand(image_file):
raise IncorrectFormatError(self, image_file)
Format.__init__(self, image_file, **kwargs)
def detectorbase_start(self):
pass
def _start(self):
'''Open the image file, read the image header, copy the key / value
pairs into an internal dictionary self._header_dictionary along with
the length of the header in bytes self._header_size.'''
from iotbx.detectors.marIP import MARIPImage
self.detectorbase = MARIPImage(self._image_file)
self.detectorbase.readHeader()
def _goniometer(self):
return self._goniometer_factory.single_axis()
def _detector(self):
'''Return a model for a simple detector, which at the moment insists
that the offsets and rotations are all 0.0.'''
assert self.detectorbase.parameters["TWOTHETA"] == 0.0
return self._detector_factory.simple(
sensor='IMAGE_PLATE',
distance=self.detectorbase.parameters["DISTANCE"],
beam_centre=(self.detectorbase.parameters["BEAM_CENTER_X"],
self.detectorbase.parameters["BEAM_CENTER_Y"]),
fast_direction='+x',
slow_direction='-y',
pixel_size=(self.detectorbase.parameters["PIXEL_SIZE"],
self.detectorbase.parameters["PIXEL_SIZE"]),
image_size=(self.detectorbase.parameters["SIZE1"],
self.detectorbase.parameters["SIZE2"]),
trusted_range=(
0, self.detectorbase.parameters["CCD_IMAGE_SATURATION"]),
mask=[])
def _beam(self):
'''Return a simple model for the beam.'''
return self._beam_factory.simple(
self.detectorbase.parameters["WAVELENGTH"])
def _scan(self):
'''Return the scan information for this image.'''
return self._scan_factory.single(
filename=self._image_file,
format="MARIP",
exposure_times=self.detectorbase.adaptor.exposure_time(),
osc_start=self.detectorbase.parameters["OSC_START"],
osc_width=self.detectorbase.parameters["OSC_RANGE"],
epoch=None)
def _start(self):
"""Open the image file, read the image header, copy the key / value
pairs into an internal dictionary self._header_dictionary along with
the length of the header in bytes self._header_size."""
self.detectorbase = MARIPImage(self._image_file)
self.detectorbase.readHeader()
class FormatMarIP(Format):
'''An image reading class for MarIP-format images
Positive identification: first 140 bytes contain the string "mar research"
'''
@staticmethod
def understand(image_file):
try:
tag = FormatMarIP.open_file(image_file, 'rb').read(140)
except IOError:
return False
return tag.find("mar research")>0
def __init__(self, image_file):
'''Initialise the image structure from the given file.'''
assert(self.understand(image_file))
Format.__init__(self, image_file)
def _start(self):
'''Open the image file, read the image header, copy the key / value
pairs into an internal dictionary self._header_dictionary along with
the length of the header in bytes self._header_size.'''
from iotbx.detectors.marIP import MARIPImage
self.detectorbase = MARIPImage(self._image_file)
self.detectorbase.readHeader()
def _goniometer(self):
return self._goniometer_factory.single_axis()
def _detector(self):
'''Return a model for a simple detector, which at the moment insists
that the offsets and rotations are all 0.0.'''
assert self.detectorbase.parameters["TWOTHETA"] == 0.0
return self._detector_factory.simple(
sensor = 'IMAGE_PLATE',
distance = self.detectorbase.parameters["DISTANCE"],
beam_centre = (self.detectorbase.parameters["BEAM_CENTER_X"],
self.detectorbase.parameters["BEAM_CENTER_Y"]),
fast_direction = '+x',
slow_direction = '-y',
pixel_size = (self.detectorbase.parameters["PIXEL_SIZE"],
self.detectorbase.parameters["PIXEL_SIZE"]),
image_size = (self.detectorbase.parameters["SIZE1"],
self.detectorbase.parameters["SIZE2"]),
trusted_range = (0, self.detectorbase.parameters["CCD_IMAGE_SATURATION"]),
mask = [])
def _beam(self):
'''Return a simple model for the beam.'''
return self._beam_factory.simple(self.detectorbase.parameters["WAVELENGTH"])
def _scan(self):
'''Return the scan information for this image.'''
return self._scan_factory.single(
filename = self._image_file,
format = "MARIP",
exposure_times = self.detectorbase.adaptor.exposure_time(),
osc_start = self.detectorbase.parameters["OSC_START"],
osc_width = self.detectorbase.parameters["OSC_RANGE"],
epoch = None)
