Source code for tomo.protocols.protocol_import_tomograms

# coding=utf-8
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# * Authors:     Adrian Quintana ( [1]
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# * [1] EyeSeeTea Ltd, London, UK
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import re
from os.path import abspath, basename

from pwem.emlib.image import ImageHandler
from pwem.objects import Transform

from pyworkflow import BETA
import pyworkflow.utils as pwutils
from pyworkflow.utils.path import createAbsLink
import pyworkflow.protocol.params as params

from .protocol_base import ProtTomoImportFiles, ProtTomoImportAcquisition
from ..objects import Tomogram
from ..utils import _getUniqueFileName

[docs]class ProtImportTomograms(ProtTomoImportFiles, ProtTomoImportAcquisition): """Protocol to import a set of tomograms to the project""" _outputClassName = 'SetOfTomograms' _label = 'import tomograms' _devStatus = BETA def __init__(self, **args): ProtTomoImportFiles.__init__(self, **args) def _defineParams(self, form): ProtTomoImportFiles._defineParams(self, form) ProtTomoImportAcquisition._defineParams(self, form) form.addSection('Origin Info') form.addParam('setOrigCoord', params.BooleanParam, condition='importFrom == IMPORT_FROM_FILES', label="Set origin of coordinates", help="Option YES:\nA new volume will be created with " "the " "given ORIGIN of coordinates. This ORIGIN will be " "set in the map file header.\nThe ORIGIN of " "coordinates will be placed at the center of the " "whole volume if you select n(x)/2, n(y)/2, " "n(z)/2 as " "x, y, z coordinates (n(x), n(y), n(z) are the " "dimensions of the whole volume). However, " "selecting " "0, 0, 0 as x, y, z coordinates, the volume will be " "placed at the upper right-hand corner.\n\n" "Option NO:\nThe ORIGIN of coordinates will be " "placed at the center of the whole volume (" "coordinates n(x)/2, n(y)/2, n(z)/2 by default). " "This " "ORIGIN will NOT be set in the map file header.\n\n" "WARNING: In case you want to process " "the volume with programs requiring a specific " "symmetry regarding the origin of coordinates, " "for example the protocol extract unit " "cell, check carefully that the coordinates of the " "origin preserve the symmetry of the whole volume. " "This is particularly relevant for loading " "fragments/subunits of the whole volume.\n", default=False) line = form.addLine('Offset', help="A wizard will suggest you possible " "coordinates for the ORIGIN. In MRC volume " "files, the ORIGIN coordinates will be " "obtained from the file header.\n " "In case you prefer set your own ORIGIN " "coordinates, write them here. You have to " "provide the map center coordinates in " "Angstroms (pixels x sampling).\n", condition='setOrigCoord') # line.addParam would produce a nicer looking form # but them the wizard icon is drawn outside the visible # window. Until this bug is fixed form is a better option form.addParam('x', params.FloatParam, condition='setOrigCoord', label="x", help="offset along x axis (Angstroms)") form.addParam('y', params.FloatParam, condition='setOrigCoord', label="y", help="offset along y axis (Angstroms)") form.addParam('z', params.FloatParam, condition='setOrigCoord', label="z", help="offset along z axis (Angstroms)") def _getImportChoices(self): """ Return a list of possible choices from which the import can be done. """ return ['eman'] def _insertAllSteps(self): self._insertFunctionStep('importTomogramsStep', self.getPattern(), self.samplingRate.get()) # --------------------------- STEPS functions -----------------------------
[docs] def importTomogramsStep( self, pattern, samplingRate ): """ Copy images matching the filename pattern Register other parameters. """"Using pattern: '%s'" % pattern) # Create a Volume template object tomo = Tomogram() tomo.setSamplingRate(samplingRate) imgh = ImageHandler() tomoSet = self._createSetOfTomograms() tomoSet.setSamplingRate(samplingRate) self._parseAcquisitionData() for fileName, fileId in self.iterFiles(): x, y, z, n = imgh.getDimensions(fileName) if fileName.endswith('.mrc') or fileName.endswith('.map'): fileName += ':mrc' if z == 1 and n != 1: zDim = n n = 1 else: zDim = z else: zDim = z origin = Transform() if self.setOrigCoord.get(): origin.setShiftsTuple(self._getOrigCoord()) else: origin.setShifts(x / -2. * samplingRate, y / -2. * samplingRate, zDim / -2. * samplingRate) tomo.setOrigin(origin) # read origin from form newFileName = _getUniqueFileName(self.getPattern(), fileName.split(':')[0]) # newFileName = abspath(self._getVolumeFileName(newFileName)) if fileName.endswith(':mrc'): fileName = fileName[:-4] createAbsLink(fileName, abspath(self._getExtraPath(newFileName))) if n == 1: tomo.cleanObjId() tomo.setFileName(self._getExtraPath(newFileName)) tomo.setAcquisition(self._extractAcquisitionParameters(fileName)) tomoSet.append(tomo) else: for index in range(1, n+1): tomo.cleanObjId() tomo.setLocation(index, self._getExtraPath(newFileName)) tomo.setAcquisition(self._extractAcquisitionParameters(fileName)) tomoSet.append(tomo) self._defineOutputs(outputTomograms=tomoSet)
# --------------------------- UTILS functions ------------------------------ def _getOrigCoord(self): return -1. * self.x.get(), -1. * self.y.get(), -1. * self.z.get() # --------------------------- INFO functions ------------------------------ def _hasOutput(self): return self.hasAttribute('outputTomograms') def _getTomMessage(self): return "Tomograms %s" % self.getObjectTag('outputTomograms') def _summary(self): try: summary = [] if self._hasOutput(): summary.append("%s imported from:\n%s" % (self._getTomMessage(), self.getPattern())) if self.samplingRate.get(): summary.append(u"Sampling rate: *%0.2f* (Å/px)" % self.samplingRate.get()) outputTomograms = getattr(self, 'outputTomograms') ProtTomoImportAcquisition._summary(self, summary, outputTomograms) x, y, z = self.outputTomograms.getFirstItem().getShiftsFromOrigin() summary.append(u"Tomograms Origin (x,y,z):\n" u" x: *%0.2f* (Å/px)\n" u" y: *%0.2f* (Å/px)\n" u" z: *%0.2f* (Å/px)" % (x, y, z)) except Exception as e: print(e) return summary def _methods(self): methods = [] if self._hasOutput(): methods.append(" %s imported with a sampling rate *%0.2f*" % (self._getTomMessage(), self.samplingRate.get()),) return methods def _getVolumeFileName(self, fileName, extension=None): if extension is not None: baseFileName = "import_" + str(basename(fileName)).split(".")[0] + ".%s"%extension else: baseFileName = "import_" + str(basename(fileName)).split(":")[0] return self._getExtraPath(baseFileName) def _validate(self): errors = [] try: next(self.iterFiles()) except StopIteration: errors.append('No files matching the pattern %s were found.' % self.getPattern()) return errors