class RefineLatticeDialog(BaseDialog):
def __init__(self, parent=None):
super(RefineLatticeDialog, self).__init__(parent)
self.select_entry(self.choose_entry)
self.refine = NXRefine(self.entry)
self.refine.read_parameters()
self.parameters = GridParameters()
self.parameters.add('symmetry', self.refine.symmetries, 'Symmetry',
None, self.set_symmetry)
self.parameters.add('a', self.refine.a, 'Unit Cell - a (Ang)', True)
self.parameters.add('b', self.refine.b, 'Unit Cell - b (Ang)', True)
self.parameters.add('c', self.refine.c, 'Unit Cell - c (Ang)', True)
self.parameters.add('alpha', self.refine.alpha, 'Unit Cell - alpha (deg)', False)
self.parameters.add('beta', self.refine.beta, 'Unit Cell - beta (deg)', False)
self.parameters.add('gamma', self.refine.gamma, 'Unit Cell - gamma (deg)', False)
self.parameters.add('wavelength', self.refine.wavelength, 'Wavelength (Ang)', False)
self.parameters.add('distance', self.refine.distance, 'Distance (mm)', False)
self.parameters.add('yaw', self.refine.yaw, 'Yaw (deg)', False)
self.parameters.add('pitch', self.refine.pitch, 'Pitch (deg)', False)
self.parameters.add('roll', self.refine.roll, 'Roll (deg)')
self.parameters.add('xc', self.refine.xc, 'Beam Center - x', False)
self.parameters.add('yc', self.refine.yc, 'Beam Center - y', False)
self.parameters.add('phi_start', self.refine.phi_start, 'Phi Start (deg)', False)
self.parameters.add('phi_step', self.refine.phi_step, 'Phi Step (deg)')
self.parameters.add('chi_start', self.refine.chi_start, 'Chi Start (deg)', False)
self.parameters.add('chi_step', self.refine.chi_step, 'Chi Step (deg)')
self.parameters.add('omega_start', self.refine.omega_start, 'Omega Start (deg)', False)
self.parameters.add('omega_step', self.refine.omega_step, 'Omega Step (deg)')
self.parameters.add('polar', self.refine.polar_max,
'Max. Polar Angle (deg)', None, self.set_polar_max)
self.parameters.add('polar_tolerance', self.refine.polar_tolerance, 'Polar Angle Tolerance')
self.parameters.add('peak_tolerance', self.refine.peak_tolerance, 'Peak Angle Tolerance')
self.parameters.add('orientation_matrix', False, 'Orientation Matrix', False)
self.refine_buttons = self.action_buttons(
('Refine Angles', self.refine_angles),
('Refine HKLs', self.refine_hkls),
('Restore', self.restore_parameters),
('Reset', self.reset_parameters))
self.lattice_buttons = self.action_buttons(
('Plot', self.plot_lattice),
('List', self.list_peaks),
('Save', self.write_parameters))
self.set_layout(self.entry_layout, self.parameters.grid(),
self.refine_buttons, self.lattice_buttons,
self.close_buttons())
self.parameters.grid_layout.setVerticalSpacing(1)
self.set_title('Refining Lattice')
self.parameters['symmetry'].value = self.refine.symmetry
self.set_symmetry()
self.peaks_box = None
def choose_entry(self):
self.refine = NXRefine(self.entry)
self.update_parameters()
def update_parameters(self):
self.parameters['a'].value = self.refine.a
self.parameters['b'].value = self.refine.b
self.parameters['c'].value = self.refine.c
self.parameters['alpha'].value = self.refine.alpha
self.parameters['beta'].value = self.refine.beta
self.parameters['gamma'].value = self.refine.gamma
self.parameters['wavelength'].value = self.refine.wavelength
self.parameters['distance'].value = self.refine.distance
self.parameters['yaw'].value = self.refine.yaw
self.parameters['pitch'].value = self.refine.pitch
self.parameters['roll'].value = self.refine.roll
self.parameters['xc'].value = self.refine.xc
self.parameters['yc'].value = self.refine.yc
self.parameters['phi_start'].value = self.refine.phi_start
self.parameters['phi_step'].value = self.refine.phi_step
self.parameters['chi_start'].value = self.refine.chi_start
self.parameters['chi_step'].value = self.refine.chi_step
self.parameters['omega_start'].value = self.refine.omega_start
self.parameters['omega_step'].value = self.refine.omega_step
self.parameters['polar'].value = self.refine.polar_max
self.parameters['polar_tolerance'].value = self.refine.polar_tolerance
try:
self.refine.polar_angles, self.refine.azimuthal_angles = \
self.refine.calculate_angles(self.refine.xp, self.refine.yp)
except Exception:
pass
def transfer_parameters(self):
self.refine.a, self.refine.b, self.refine.c, \
self.refine.alpha, self.refine.beta, self.refine.gamma = \
self.get_lattice_parameters()
self.refine.set_symmetry()
self.refine.wavelength = self.get_wavelength()
self.refine.distance = self.get_distance()
self.refine.yaw, self.refine.pitch, self.refine.roll = self.get_tilts()
self.refine.xc, self.refine.yc = self.get_centers()
self.refine.phi_start, self.refine.phi_step = self.get_phi()
self.refine.chi_start, self.refine.chi_step = self.get_chi()
self.refine.omega_start, self.refine.omega_step = self.get_omega()
self.refine.polar_max = self.get_polar_max()
self.refine.polar_tol = self.get_tolerance()
self.refine.polar_angles
def write_parameters(self):
self.transfer_parameters()
polar_angles, azimuthal_angles = self.refine.calculate_angles(
self.refine.xp, self.refine.yp)
self.refine.write_angles(polar_angles, azimuthal_angles)
self.refine.write_parameters()
def get_symmetry(self):
return self.parameters['symmetry'].value
def set_symmetry(self):
self.refine.symmetry = self.get_symmetry()
self.refine.set_symmetry()
self.update_parameters()
if self.refine.symmetry == 'cubic':
self.parameters['b'].vary = False
self.parameters['c'].vary = False
self.parameters['alpha'].vary = False
self.parameters['beta'].vary = False
self.parameters['gamma'].vary = False
elif self.refine.symmetry == 'tetragonal':
self.parameters['b'].vary = False
self.parameters['alpha'].vary = False
self.parameters['beta'].vary = False
self.parameters['gamma'].vary = False
elif self.refine.symmetry == 'orthorhombic':
self.parameters['alpha'].vary = False
self.parameters['beta'].vary = False
self.parameters['gamma'].vary = False
elif self.refine.symmetry == 'hexagonal':
self.parameters['b'].vary = False
self.parameters['alpha'].vary = False
self.parameters['beta'].vary = False
self.parameters['gamma'].vary = False
elif self.refine.symmetry == 'monoclinic':
self.parameters['alpha'].vary = False
self.parameters['gamma'].vary = False
def get_lattice_parameters(self):
return (self.parameters['a'].value,
self.parameters['b'].value,
self.parameters['c'].value,
self.parameters['alpha'].value,
self.parameters['beta'].value,
self.parameters['gamma'].value)
def get_wavelength(self):
return self.parameters['wavelength'].value
def get_distance(self):
return self.parameters['distance'].value
def get_tilts(self):
return (self.parameters['yaw'].value,
self.parameters['pitch'].value,
self.parameters['roll'].value)
def get_centers(self):
return self.parameters['xc'].value, self.parameters['yc'].value
def get_polar_max(self):
return self.parameters['polar'].value
def set_polar_max(self):
self.refine.polar_max = self.get_polar_max()
def get_tolerance(self):
return self.parameters['polar_tolerance'].value
def get_phi(self):
return (self.parameters['phi_start'].value,
self.parameters['phi_step'].value)
def get_chi(self):
return (self.parameters['chi_start'].value,
self.parameters['chi_step'].value)
def get_omega(self):
return (self.parameters['omega_start'].value,
self.parameters['omega_step'].value)
def get_hkl_tolerance(self):
try:
return np.float32(self.tolerance_box.text())
except Exception:
return self.refine.hkl_tolerance
def plot_lattice(self):
self.transfer_parameters()
self.set_polar_max()
self.plot_peaks()
self.plot_rings()
def plot_peaks(self):
try:
x, y = self.refine.xp[self.refine.idx], self.refine.yp[self.refine.idx]
polar_angles, azimuthal_angles = self.refine.calculate_angles(x, y)
if polar_angles[0] > polar_angles[-1]:
polar_angles = polar_angles[::-1]
azimuthal_angles = azimuthal_angles[::-1]
azimuthal_field = NXfield(azimuthal_angles, name='azimuthal_angle')
azimuthal_field.long_name = 'Azimuthal Angle'
polar_field = NXfield(polar_angles, name='polar_angle')
polar_field.long_name = 'Polar Angle'
plotview = get_plotview()
plotview.plot(NXdata(azimuthal_field, polar_field, title='Peak Angles'))
except NeXusError as error:
report_error('Plotting Lattice', error)
def plot_rings(self, polar_max=None):
if polar_max is None:
polar_max = self.refine.polar_max
peaks = self.refine.calculate_rings(polar_max)
plotview = get_plotview()
plotview.vlines(peaks, colors='r', linestyles='dotted')
plotview.draw()
def plot_peak(self, i):
x, y, z = self.refine.xp[i], self.refine.yp[i], self.refine.zp[i]/10.0
xmin, xmax = max(0,int(x)-200), min(int(x)+200,data.v.shape[2])
ymin, ymax = max(0,int(y)-200), min(int(y)+200,data.v.shape[1])
zmin, zmax = max(0.0,z-20.0), min(z+20.0, 360.0)
xslab=np.s_[zmin:zmax,ymin:ymax,x]
yslab=np.s_[zmin:zmax,y,xmin:xmax]
zslab=np.s_[z,ymin:ymax,xmin:xmax]
pvz.plot(data[zslab], log=True)
pvz.crosshairs(x, y)
pvy.plot(data[yslab], log=True)
pvy.crosshairs(x, z)
pvx.plot(data[xslab], log=True)
pvx.crosshairs(y, z)
def refine_angles(self):
self.parameters['orientation_matrix'].vary = False
self.parameters['phi_start'].vary = False
self.parameters['chi_start'].vary = False
self.parameters['omega_start'].vary = False
self.parameters.refine_parameters(self.angle_residuals)
self.update_parameters()
def angle_residuals(self, p):
self.parameters.get_parameters(p)
self.transfer_parameters()
polar_angles, _ = self.refine.calculate_angles(self.refine.x, self.refine.y)
rings = self.refine.calculate_rings()
residuals = np.array([find_nearest(rings, polar_angle) - polar_angle
for polar_angle in polar_angles])
return np.sum(residuals**2)
def refine_hkls(self):
self.parameters.refine_parameters(self.hkl_residuals)
self.update_parameters()
if self.peaks_box is None:
self.list_peaks()
else:
self.update_table()
def hkl_residuals(self, p):
self.parameters.get_parameters(p)
self.transfer_parameters()
return self.refine.score(self.refine.idx)
def restore_parameters(self):
self.parameters.restore_parameters()
self.transfer_parameters()
def reset_parameters(self):
self.refine.read_parameters()
self.update_parameters()
def list_peaks(self):
if self.peaks_box is not None:
self.update_table()
return
self.peaks_box = BaseDialog(self)
self.peaks_box.setMinimumWidth(600)
self.peaks_box.setMinimumHeight(600)
header = ['i', 'x', 'y', 'z', 'Polar', 'Azi', 'Intensity',
'H', 'K', 'L', 'Diff']
peak_list = self.refine.get_peaks()
self.refine.assign_rings()
self.rings = self.refine.get_ring_hkls()
orient_layout = QtGui.QHBoxLayout()
if self.refine.primary is None:
self.refine.primary = 0
if self.refine.secondary is None:
self.refine.secondary = 1
self.primary_box = QtGui.QLineEdit(str(self.refine.primary))
self.primary_box.setAlignment(QtCore.Qt.AlignRight)
self.primary_box.setFixedWidth(80)
self.secondary_box = QtGui.QLineEdit(str(self.refine.secondary))
self.secondary_box.setAlignment(QtCore.Qt.AlignRight)
self.secondary_box.setFixedWidth(80)
orient_button = QtGui.QPushButton('Orient')
orient_button.clicked.connect(self.orient)
orient_layout.addStretch()
orient_layout.addWidget(QtGui.QLabel('Primary'))
orient_layout.addWidget(self.primary_box)
orient_layout.addWidget(QtGui.QLabel('Secondary'))
orient_layout.addWidget(self.secondary_box)
orient_layout.addStretch()
orient_layout.addWidget(orient_button)
self.table_view = QtGui.QTableView()
self.table_model = NXTableModel(self, peak_list, header)
self.table_view.setModel(self.table_model)
self.table_view.resizeColumnsToContents()
self.table_view.horizontalHeader().stretchLastSection()
self.table_view.setSelectionBehavior(QtGui.QAbstractItemView.SelectRows)
self.table_view.doubleClicked.connect(self.plot_peak)
self.table_view.setSortingEnabled(True)
self.table_view.sortByColumn(0, QtCore.Qt.AscendingOrder)
layout = QtGui.QVBoxLayout()
layout.addLayout(orient_layout)
layout.addWidget(self.table_view)
close_layout = QtGui.QHBoxLayout()
self.status_text = QtGui.QLabel('Score: %.4f' % self.refine.score())
self.tolerance_box = QtGui.QLineEdit(str(self.refine.hkl_tolerance))
self.tolerance_box.setAlignment(QtCore.Qt.AlignRight)
self.tolerance_box.setMaxLength(5)
self.tolerance_box.editingFinished.connect(self.update_table)
self.tolerance_box.setFixedWidth(80)
save_button = QtGui.QPushButton('Save Orientation')
save_button.clicked.connect(self.save_orientation)
close_button = QtGui.QPushButton('Close Window')
close_button.clicked.connect(self.close_peaks_box)
close_layout.addWidget(self.status_text)
close_layout.addStretch()
close_layout.addWidget(QtGui.QLabel('Threshold'))
close_layout.addWidget(self.tolerance_box)
close_layout.addStretch()
close_layout.addWidget(save_button)
close_layout.addStretch()
close_layout.addWidget(close_button)
layout.addLayout(close_layout)
self.peaks_box.setLayout(layout)
self.peaks_box.setWindowTitle('%s Peak Table' % self.entry.nxtitle)
self.peaks_box.adjustSize()
self.peaks_box.show()
self.plotview = None
def update_table(self):
self.transfer_parameters()
self.refine.hkl_tolerance = self.get_hkl_tolerance()
self.table_model.peak_list = self.refine.get_peaks()
rows, columns = len(self.table_model.peak_list), 11
self.table_model.dataChanged.emit(self.table_model.createIndex(0, 0),
self.table_model.createIndex(rows-1, columns-1))
self.status_text.setText('Score: %.4f' % self.refine.score())
def plot_peak(self):
row = self.table_view.currentIndex().row()
data = self.entry.data
x, y, z = [self.table_view.model().peak_list[row][i] for i in range(1, 4)]
xmin, xmax = max(0,x-200), min(x+200,data.nxsignal.shape[2])
ymin, ymax = max(0,y-200), min(y+200,data.nxsignal.shape[1])
zmin, zmax = max(0,z-200), min(z+200,data.nxsignal.shape[0])
zslab=np.s_[z,ymin:ymax,xmin:xmax]
if self.plotview is None:
self.plotview = NXPlotView('X-Y Projection')
self.plotview.plot(data[zslab], log=True)
self.plotview.crosshairs(x, y)
def orient(self):
self.refine.primary = int(self.primary_box.text())
self.refine.secondary = int(self.secondary_box.text())
self.refine.Umat = self.refine.get_UBmat(self.refine.primary,
self.refine.secondary) \
* self.refine.Bimat
self.update_table()
def save_orientation(self):
self.write_parameters()
def close_peaks_box(self):
self.peaks_box.close()
self.peaks_box = None
class CalculateDialog(BaseDialog):
def __init__(self, parent=None):
super(CalculateDialog, self).__init__(parent)
self.select_entry(self.choose_entry)
self.refine = NXRefine(self.entry)
self.refine.read_parameters()
self.parameters = GridParameters()
self.parameters.add('wavelength', self.refine.wavelength, 'Wavelength (Ang)')
self.parameters.add('distance', self.refine.distance, 'Detector Distance (mm)')
self.parameters.add('xc', self.refine.xc, 'Beam Center - x')
self.parameters.add('yc', self.refine.yc, 'Beam Center - y')
self.parameters.add('pixel', self.refine.pixel_size, 'Pixel Size (mm)')
action_buttons = self.action_buttons(('Plot', self.plot_lattice),
('Save', self.write_parameters))
self.set_layout(self.entry_layout, self.parameters.grid(),
action_buttons, self.close_buttons())
self.set_title('Calculate Angles')
def choose_entry(self):
self.refine = NXRefine(self.entry)
self.update_parameters()
def update_parameters(self):
self.parameters['wavelength'].value = self.refine.wavelength
self.parameters['distance'].value = self.refine.distance
self.parameters['xc'].value = self.refine.xc
self.parameters['yc'].value = self.refine.yc
self.parameters['pixel'].value = self.refine.pixel_size
def get_wavelength(self):
return self.parameters['wavelength'].value
def get_distance(self):
return self.parameters['distance'].value
def get_centers(self):
return self.parameters['xc'].value, self.parameters['yc'].value
def get_pixel_size(self):
return self.parameters['pixel'].value
def get_parameters(self):
self.refine.wavelength = self.get_wavelength()
self.refine.distance = self.get_distance()
self.refine.xc, self.refine.yc = self.get_centers()
self.refine.pixel_size = self.get_pixel_size()
self.refine.yaw = self.refine.pitch = self.refine.roll = None
def plot_lattice(self):
try:
self.get_parameters()
self.plot_peaks(self.refine.xp, self.refine.yp)
except NeXusError as error:
report_error('Calculating Angles', error)
def plot_peaks(self, x, y):
try:
polar_angles, azimuthal_angles = self.refine.calculate_angles(x, y)
if polar_angles[0] > polar_angles[-1]:
polar_angles = polar_angles[::-1]
azimuthal_angles = azimuthal_angles[::-1]
azimuthal_field = NXfield(azimuthal_angles, name='azimuthal_angle')
azimuthal_field.long_name = 'Azimuthal Angle'
polar_field = NXfield(polar_angles, name='polar_angle')
polar_field.long_name = 'Polar Angle'
plotview = get_plotview()
plotview.plot(NXdata(azimuthal_field, polar_field, title='Peak Angles'))
except NeXusError as error:
report_error('Plotting Lattice', error)
def write_parameters(self):
try:
self.get_parameters()
polar_angles, azimuthal_angles = self.refine.calculate_angles(
self.refine.xp, self.refine.yp)
self.refine.write_angles(polar_angles, azimuthal_angles)
self.refine.write_parameters()
except NeXusError as error:
report_error('Calculating Angles', error)