287 lines
13 KiB
Python
287 lines
13 KiB
Python
"""
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Events 2 histogram, quick reduction of single file to display during experiment.
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Can be used as a live preview with automatic update when files are modified.
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"""
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import logging
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import os
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import numpy as np
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import matplotlib.pyplot as plt
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from matplotlib.colors import ListedColormap
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from orsopy import fileio
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from datetime import datetime
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from .file_reader import AmorEventData, AmorHeader
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from .header import Header
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from .instrument import LZGrid
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from .normalization import LZNormalisation
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from .options import E2HConfig, E2HPlotArguments, IncidentAngle, MonitorType, E2HPlotSelection
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from . import event_handling as eh
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from .path_handling import PathResolver
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from .projection import CombinedProjection, LProjection, LZProjection, ProjectionInterface, ReflectivityProjector, \
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TofProjection, TofZProjection, TProjection, YTProjection, YZProjection
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NEEDS_LAMDA = (E2HPlotSelection.All, E2HPlotSelection.LT, E2HPlotSelection.Q, E2HPlotSelection.L)
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class E2HReduction:
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config: E2HConfig
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header: Header
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event_actions: eh.EventDataAction
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_last_mtime = 0.
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projection: ProjectionInterface
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def __init__(self, config: E2HConfig):
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self.config = config
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self.header = Header()
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self.prepare_actions()
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def prepare_actions(self):
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"""
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Does not do any actual reduction.
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"""
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self.path_resolver = PathResolver(self.config.reader.year, self.config.reader.rawPath)
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self.file_list = self.path_resolver.resolve(self.config.reduction.fileIdentifier)
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self.file_index = 0
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self.plot_kwds = {}
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self.fig = plt.figure()
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plt.rcParams.update({'font.size': self.config.reduction.fontsize})
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if self.config.reduction.update:
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# live update implies plotting
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self.config.reduction.show_plot = True
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if self.config.reduction.plot==E2HPlotSelection.Raw:
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# Raw implies fast caculations
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self.config.reduction.fast = True
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if not self.config.reduction.fast or self.config.reduction.plot in NEEDS_LAMDA:
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from . import event_analysis as ea
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# Actions on datasets not used for normalization
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self.event_actions = eh.ApplyPhaseOffset(self.config.experiment.chopperPhaseOffset)
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if not self.config.reduction.fast:
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self.event_actions |= eh.CorrectChopperPhase()
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self.event_actions |= ea.ExtractWalltime()
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else:
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logging.info(' Fast reduction always uses time normalization')
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self.config.experiment.monitorType = MonitorType.time
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self.event_actions |= eh.AssociatePulseWithMonitor(self.config.experiment.monitorType)
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if self.config.experiment.monitorType in [MonitorType.proton_charge, MonitorType.debug]:
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# the filtering only makes sense if using actual monitor data, not time
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self.event_actions |= eh.FilterMonitorThreshold(self.config.experiment.lowCurrentThreshold)
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if not self.config.reduction.fast:
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self.event_actions |= eh.FilterStrangeTimes()
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if self.config.reduction.plot in [E2HPlotSelection.YT, E2HPlotSelection.YZ]:
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# perform time fold-back and apply yRange filter if not fast mode
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self.event_actions |= ea.MergeFrames()
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self.event_actions |= ea.AnalyzePixelIDs(self.config.experiment.yRange)
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if self.config.reduction.plot==E2HPlotSelection.YT:
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# perform corrections for tof if not fast mode
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self.event_actions |= eh.TofTimeCorrection(self.config.experiment.incidentAngle==IncidentAngle.alphaF)
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# select needed actions in depenence of plots
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if self.config.reduction.plot in NEEDS_LAMDA:
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self.event_actions |= ea.MergeFrames()
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self.event_actions |= ea.AnalyzePixelIDs(self.config.experiment.yRange)
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self.event_actions |= eh.TofTimeCorrection(self.config.experiment.incidentAngle==IncidentAngle.alphaF)
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self.event_actions |= ea.CalculateWavelength(self.config.experiment.lambdaRange)
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self.event_actions |= eh.ApplyMask()
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# plot dependant options
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if self.config.reduction.plot in [E2HPlotSelection.All, E2HPlotSelection.LT, E2HPlotSelection.Q]:
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self.grid = LZGrid(0.01, [0.0, 0.25])
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if self.config.reduction.plot in [E2HPlotSelection.All, E2HPlotSelection.Raw,
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E2HPlotSelection.LT, E2HPlotSelection.YT,
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E2HPlotSelection.YZ, E2HPlotSelection.TZ]:
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self.plot_kwds['colorbar'] = True
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self.plot_kwds['cmap'] = str(self.config.reduction.plot_colormap)
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if self.config.reduction.plotArgs==E2HPlotArguments.Linear:
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self.plot_kwds['norm'] = None
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self.register_colormap()
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def reduce(self):
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if self.config.reduction.plot in [E2HPlotSelection.All, E2HPlotSelection.LT, E2HPlotSelection.Q]:
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if self.config.reduction.normalizationModel:
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self.norm = LZNormalisation.model(self.grid)
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else:
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self.norm = LZNormalisation.unity(self.grid)
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self.prepare_graphs()
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while self.file_index < len(self.file_list):
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self.read_data()
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self.add_data()
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if self.config.reduction.plotArgs==E2HPlotArguments.OutputFile:
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self.create_file_output()
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if self.config.reduction.plotArgs!=E2HPlotArguments.OutputFile or self.config.reduction.show_plot:
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self.create_graph()
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if self.config.reduction.plotArgs==E2HPlotArguments.Default and not self.config.reduction.update:
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# safe to image file if not auto-updating graph
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plt.savefig(f'e2h_{self.config.reduction.plot}.png', dpi=300)
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if self.config.reduction.update:
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self.timer = self.fig.canvas.new_timer(1000)
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self.timer.add_callback(self.update)
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self.timer.start()
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if self.config.reduction.show_plot:
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plt.show()
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def register_colormap(self):
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cmap = plt.colormaps['gnuplot'](np.arange(256))
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cmap[:1, :] = np.array([256/256, 255/256, 236/256, 1])
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cmap = ListedColormap(cmap, name='jochen_deluxe', N=cmap.shape[0])
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#cmap.set_bad((1.,1.,0.9))
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plt.colormaps.register(cmap)
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def prepare_graphs(self):
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last_file_header = AmorHeader(self.file_list[-1])
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tthh = last_file_header.geometry.nu - last_file_header.geometry.mu
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if not self.config.reduction.is_default('thetaRangeR'):
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# adjust range based on detector center
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thetaRange = [ti+tthh for ti in self.config.reduction.thetaRangeR]
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else:
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thetaRange = [tthh - last_file_header.geometry.div/2, tthh + last_file_header.geometry.div/2]
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if self.config.reduction.plot==E2HPlotSelection.LT:
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self.projection = LZProjection(tthh, self.grid)
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if not self.config.reduction.fast:
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self.projection.correct_gravity(last_file_header.geometry.detectorDistance)
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self.projection.apply_lamda_mask(self.config.experiment.lambdaRange)
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self.projection.apply_theta_mask(thetaRange)
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self.projection.apply_norm_mask(self.norm)
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if self.config.reduction.plot==E2HPlotSelection.Q:
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plz = LZProjection(tthh, self.grid)
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if not self.config.reduction.fast:
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plz.correct_gravity(last_file_header.geometry.detectorDistance)
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plz.calculate_q()
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plz.apply_lamda_mask(self.config.experiment.lambdaRange)
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plz.apply_theta_mask(thetaRange)
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plz.apply_norm_mask(self.norm)
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self.projection = ReflectivityProjector(plz, self.norm)
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if self.config.reduction.plot==E2HPlotSelection.YZ:
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self.projection = YZProjection()
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if self.config.reduction.plot==E2HPlotSelection.YT:
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self.projection = YTProjection(tthh)
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if self.config.reduction.plot==E2HPlotSelection.T:
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self.projection = TProjection(tthh)
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if self.config.reduction.plot==E2HPlotSelection.L:
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self.projection = LProjection()
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if self.config.reduction.plot==E2HPlotSelection.TZ:
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self.projection = TofZProjection(last_file_header.timing.tau, foldback=not self.config.reduction.fast)
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if self.config.reduction.plot==E2HPlotSelection.ToF:
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self.projection = TofProjection(last_file_header.timing.tau, foldback=not self.config.reduction.fast)
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if self.config.reduction.plot==E2HPlotSelection.All:
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plz = LZProjection(tthh, self.grid)
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if not self.config.reduction.fast:
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plz.correct_gravity(last_file_header.geometry.detectorDistance)
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plz.calculate_q()
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plz.apply_lamda_mask(self.config.experiment.lambdaRange)
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plz.apply_theta_mask(thetaRange)
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plz.apply_norm_mask(self.norm)
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pr = ReflectivityProjector(plz, self.norm)
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pyz = YZProjection()
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self.projection = CombinedProjection(3, 2, [plz, pyz, pr],
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[(0, 2, 0, 1), (0, 2, 1, 2), (2, 3, 0, 2)])
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if self.config.reduction.plot==E2HPlotSelection.Raw:
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del(self.plot_kwds['colorbar'])
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# A combined graph that does not require longer calculations
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plyt = YTProjection(tthh)
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pltofz = TofZProjection(last_file_header.timing.tau, foldback=not self.config.reduction.fast)
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pltof = TofProjection(last_file_header.timing.tau, foldback=not self.config.reduction.fast)
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plt = TProjection(tthh)
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self.projection = CombinedProjection(3, 3, [plyt, pltofz, plt, pltof],
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[(0,2, 0, 1), (0, 2, 1, 3), (2,3, 0,1),(2,3,1,3)])
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def read_data(self):
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fileName = self.file_list[self.file_index]
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self.dataset = AmorEventData(fileName, max_events=self.config.reduction.max_events)
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if self.dataset.EOF or fileName==self.file_list[-1]:
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self.file_index += 1
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self.event_actions(self.dataset)
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self.dataset.update_header(self.header)
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self.header.measurement_data_files.append(fileio.File(file=fileName.split('/')[-1],
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timestamp=self.dataset.fileDate))
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def add_data(self):
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self.monitor = self.dataset.data.pulses.monitor.sum()
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self.projection.project(self.dataset, monitor=self.monitor)
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if self.config.reduction.plot==E2HPlotSelection.LT:
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self.projection.normalize_over_illuminated(self.norm)
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def create_file_output(self):
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...
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def create_title(self):
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output = "Events to Histogram - "
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output += ",".join(["#"+os.path.basename(fi)[9:15].lstrip('0') for fi in self.file_list])
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output += f" ($\\mu$={self.dataset.geometry.mu:.2f} ;"
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output += f" $\\nu$={self.dataset.geometry.nu:.2f})"
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if self.config.reduction.update:
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output += f"\n at "+datetime.now().strftime("%m/%d/%Y %H:%M:%S")
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return output
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def create_graph(self):
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plt.suptitle(self.create_title())
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self.projection.plot(**self.plot_kwds)
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plt.tight_layout(pad=0.5)
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def replace_dataset(self, latest):
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new_files = self.path_resolver.resolve(f'{latest}')
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if not os.path.exists(new_files[-1]):
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return
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logging.warning(f"Preceding to next file {latest}")
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self.file_list = new_files
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self.file_index = 0
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self.read_data()
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self.projection.clear()
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self.add_data()
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self.fig.clear()
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self.create_graph()
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def update(self):
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logging.debug(" check for update")
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if self.config.reduction.fileIdentifier=='0':
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# if latest file was choosen, check if new one available and switch to it
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current = int(os.path.basename(self.file_list[-1])[9:15])
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latest = self.path_resolver.search_latest(0)
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if latest>current:
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self.replace_dataset(latest)
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return
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# if all events were read last time, only load more if file was modified
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if self.dataset.EOF and os.path.getmtime(self.file_list[-1])<=self._last_mtime:
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return
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self._last_mtime = os.path.getmtime(self.file_list[-1])
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try:
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update_data = AmorEventData(self.file_list[-1], self.dataset.last_index+1,
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max_events=self.config.reduction.max_events)
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except EOFError:
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return
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logging.info(" updating with new data")
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self.event_actions(update_data)
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self.dataset=update_data
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self.monitor = self.dataset.data.pulses.monitor.sum()
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self.projection.project(update_data, self.monitor)
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self.projection.update_plot()
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plt.suptitle(self.create_title())
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plt.draw() |