First Commit, CrossBoxSelection working in gui

.gitignore

+
+.idea/
+
+__pycache__/
+
+*.png

evaluation.py

+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Created on Wed Jan 22 13:57:28 2020
+
+@author: luna
+"""
+from helpers import ParticleBinSorter
+
+class ResultComparer(object):
+
+    def _get_mp_count_error_per_bin(self, allParticles, subParticles, fractionMeasured):
+        binSorter = ParticleBinSorter()
+        allParticlesInBins = binSorter.sort_particles_into_bins(allParticles)
+        subParticlesInBins = binSorter.sort_particles_into_bins(subParticles)
+        mpCountErrorsPerBin = []
+        for allParticleBin, subParticleBin in zip(allParticlesInBins, subParticlesInBins):
+            mpCountErrorsPerBin.append(self._get_mp_count_error(allParticleBin, subParticleBin, fractionMeasured))
+        return binSorter.bins, mpCountErrorsPerBin
+        
+    def _get_mp_count_error(self, allParticles, subParticles, fractionMeasured): 
+        numMPOrig = self._get_number_of_MP_particles(allParticles)
+        numMPEstimate = self._get_number_of_MP_particles(subParticles) / fractionMeasured
+        
+        if numMPOrig != 0:
+            mpCountError = self._get_error_from_values(numMPOrig, numMPEstimate)
+        elif numMPEstimate == 0:
+            mpCountError = 0
+        else:
+            raise Exception #> 0 particles in subsample, whereas none in entire sample. This cannot be!
+            
+        return mpCountError
+    
+    def _get_error_from_values(self, exact, estimate):
+        assert(exact != 0)
+        return abs(exact - estimate) / exact
+    
+    def _get_number_of_MP_particles(self, particleList):
+        mpPatterns = ['poly', 'rubber', 'pb', 'pr', 'pg', 'py', 'pv']
+        numMPParticles = 0
+        
+        for particle in particleList:
+            assignment = particle.getParticleAssignment()
+            for pattern in mpPatterns:
+                if assignment.lower().find(pattern) != -1:
+                    numMPParticles += 1
+                    break
+
+        return numMPParticles
\ No newline at end of file

geometricOperations.py

+from methods import SubsamplingMethod
+
+class CrossBoxSelector(SubsamplingMethod):
+    def __init__(self, particleContainer, desiredFraction:float = 0.1) -> None:
+        super(CrossBoxSelector, self).__init__(particleContainer, desiredFraction)
+        self.fraction = desiredFraction
+        self.filterWidth: float = 1000
+        self.filterHeight: float = 1000
+        self.numBoxesAcross: int = 3      #either 3 or 5
+
+    @property
+    def boxSize(self) -> float:
+        assert self.get_maximum_achievable_fraction() >= self.fraction
+        totalBoxArea: float = ((self.filterWidth*self.filterHeight)*self.fraction)
+        boxArea: float = totalBoxArea / (2*self.numBoxesAcross - 1)
+        return boxArea**0.5
+
+    def get_topLeft_of_boxes(self) -> list:
+        topLeftCorners: list = []
+        boxSize = self.boxSize
+        xStartCoordinates: list = self._get_horizontal_box_starts(boxSize)
+        yStartCoordinates: list = self._get_vertical_box_starts(boxSize)
+        middleXCoordinate: float = xStartCoordinates[self.numBoxesAcross//2]
+        middleYCoordinate: float = yStartCoordinates[self.numBoxesAcross//2]
+
+        for i in range(self.numBoxesAcross):
+            topLeftCorners.append((middleXCoordinate, yStartCoordinates[i]))
+            if i != self.numBoxesAcross//2:
+                topLeftCorners.append((xStartCoordinates[i], middleYCoordinate))
+
+        return topLeftCorners
+
+    def get_maximum_achievable_fraction(self) -> float:
+        """
+        Returns the maximum achievable fraction, given the desired number of boxes across.
+        It is with respect to a rectangular filter of width*height, for circular filter this has to be divided by 0.786
+        :return float:
+        """
+        maxBoxWidth: float = self.filterWidth / self.numBoxesAcross
+        maxBoxHeight: float = self.filterHeight / self.numBoxesAcross
+        numBoxes: int = 2*self.numBoxesAcross - 1
+        totalBoxArea: float = numBoxes * (maxBoxWidth * maxBoxHeight)
+        return totalBoxArea / (self.filterHeight * self.filterWidth)
+
+    def _get_horizontal_box_starts(self, boxSize: float) -> list:
+        """
+        Returns a list of width-values at which the individual boxes start
+        :param boxSize:
+        :return list:
+        """
+        return self._get_box_starts(self.filterWidth, boxSize)
+
+    def _get_vertical_box_starts(self, boxSize: float) -> list:
+        """
+        Returns a list of height-values at which the individual boxes start
+        :param boxSize:
+        :return list:
+        """
+        return self._get_box_starts(self.filterHeight, boxSize)
+
+    def _get_box_starts(self, filterSize: float, boxSize: float) -> list:
+        maxBoxSize: float = filterSize / self.numBoxesAcross
+        assert maxBoxSize >= boxSize
+        tileStarts: list = []
+        for i in range(self.numBoxesAcross):
+            start: float = i * filterSize / self.numBoxesAcross + (maxBoxSize - boxSize) / 2
+            tileStarts.append(start)
+
+        return tileStarts
\ No newline at end of file

gui/filterView.py

+from PyQt5 import QtGui, QtWidgets, QtCore
+
+
+class FilterView(QtWidgets.QGraphicsView):
+
+    def __init__(self):
+        super(FilterView, self).__init__()
+        self.setWindowTitle('FilterView')
+
+        scene = QtWidgets.QGraphicsScene(self)
+        scene.setItemIndexMethod(QtWidgets.QGraphicsScene.NoIndex)
+        scene.setBackgroundBrush(QtCore.Qt.darkGray)
+        self.setScene(scene)
+        self.setCacheMode(QtWidgets.QGraphicsView.CacheBackground)
+        self.setViewportUpdateMode(QtWidgets.QGraphicsView.BoundingRectViewportUpdate)
+        self.setRenderHint(QtGui.QPainter.Antialiasing)
+
+        self.filter = FilterGraphItem()
+        self.scene().addItem(self.filter)
+        self.measuringBoxes: list = []
+
+    def update_measure_boxes(self, viewItems: list) -> None:
+        self._remove_measure_boxes()
+        for item in viewItems:
+            self.measuringBoxes.append(item)
+            self.scene().addItem(item)
+
+    def _remove_measure_boxes(self) -> None:
+        for item in self.measuringBoxes:
+            self.scene().removeItem(item)
+        self.measuringBoxes = []
+
+
+class FilterGraphItem(QtWidgets.QGraphicsItem):
+    """
+    The Graphical Representation of the actual filter
+    """
+    def __init__(self, filterWidth:float=500, filterHeight:float=500):
+        super(FilterGraphItem, self).__init__()
+        self.width = filterWidth
+        self.height = filterHeight
+        self.setPos(0, 0)
+        self.rect = QtCore.QRectF(0, 0, self.width, self.height)
+
+    def boundingRect(self) -> QtCore.QRectF:
+        return self.rect
+
+    def paint(self, painter: QtGui.QPainter, option, widget) -> None:
+        painter.setPen(QtCore.Qt.black)
+        painter.setBrush(QtCore.Qt.white)
+        painter.drawRect(self.rect)
+
+        painter.setPen(QtCore.Qt.darkGray)
+        painter.setBrush(QtCore.Qt.lightGray)
+        painter.drawEllipse(self.rect)
+
+
+class MeasureBoxGraphItem(QtWidgets.QGraphicsItem):
+    """
+    Displays a box in which particles will be measured
+    """
+    def __init__(self, posX:float=50, posY:float=50, width:float=50, height:float=50) -> None:
+        super(MeasureBoxGraphItem, self).__init__()
+        self.posX: float = posX
+        self.posY: float = posY
+        self.height: float = height
+        self.width: float = width
+        self.setPos(posX, posY)
+        self.rect = QtCore.QRectF(0, 0, self.width, self.height)
+        self.setToolTip(f'x0: {round(self.posX)}, y0: {round(self.posY)}, \n'
+                        f'x1: {round(self.posX + self.width)}, y1: {round(self.posY + self.height)}')
+
+    def boundingRect(self) -> QtCore.QRectF:
+        return self.rect
+
+    def paint(self, painter, option, widget) -> None:
+        painter.setBrush(QtCore.Qt.green)
+        painter.setPen(QtCore.Qt.darkGreen)
+        painter.drawRects(self.rect)
+
+
+if __name__ == '__main__':
+    import sys
+    app = QtWidgets.QApplication(sys.argv)
+    filterView = FilterView()
+    filterView.show()
+    ret = app.exec_()
\ No newline at end of file

gui/mainView.py

+from PyQt5 import QtWidgets
+from filterView import FilterView
+from measureModes import CrossBoxMode, CrossBoxesControls
+
+
+class MainView(QtWidgets.QWidget):
+    def __init__(self):
+        super(MainView, self).__init__()
+
+        self.setWindowTitle('Subsampling Selector')
+        self.layout: QtWidgets.QVBoxLayout = QtWidgets.QVBoxLayout()
+        self.setLayout(self.layout)
+
+        self.modeSelector: QtWidgets.QComboBox = QtWidgets.QComboBox()
+        self.measureModes: dict = {}
+        self.activeMode = None
+        self.activeModeControl: QtWidgets.QGroupBox = QtWidgets.QGroupBox()
+
+        self.controlGroup = QtWidgets.QGroupBox()
+        self.controlGroupLayout = QtWidgets.QHBoxLayout()
+        self.controlGroup.setLayout(self.controlGroupLayout)
+
+        self.controlGroupLayout.addWidget(QtWidgets.QLabel('Select Subsampling Mode:'))
+        self.controlGroupLayout.addWidget(self.modeSelector)
+        self.controlGroupLayout.addWidget(self.activeModeControl)
+
+        self.layout.addWidget(self.controlGroup)
+        self.filterView = FilterView()
+        self.layout.addWidget(self.filterView)
+        self._add_measure_modes()
+        self._switch_to_default_mode()
+
+    def _add_measure_modes(self) -> None:
+        self.modeSelector.addItem('crossSelection')
+        self.measureModes['crossSelection'] = CrossBoxMode(self.filterView)
+
+    def _switch_to_default_mode(self) -> None:
+        modes: list = list(self.measureModes.keys())
+        self._activate_mode(modes[0])
+
+    def _activate_mode(self, modeName: str) -> None:
+        self.activeModeControl.setParent(None)
+        self.controlGroupLayout.removeWidget(self.activeModeControl)
+
+        self.activeMode = self.measureModes[modeName]
+        self.activeModeControl = self.activeMode.get_control_groupBox()
+        self.controlGroupLayout.insertWidget(2, self.activeModeControl)
+
+
+if __name__ == '__main__':
+    import sys
+    app = QtWidgets.QApplication(sys.argv)
+    subsampling = MainView()
+    subsampling.show()
+    ret = app.exec_()
\ No newline at end of file

gui/measureModes.py

+from PyQt5 import QtCore, QtWidgets
+# import os, sys, inspect
+# currentdir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
+# parentdir = os.path.dirname(currentdir)
+# sys.path.insert(0, parentdir)
+# del currentdir, parentdir
+from filterView import FilterView, MeasureBoxGraphItem
+from geometricOperations import CrossBoxSelector
+
+
+class MeasureMode(QtCore.QObject):
+    def __init__(self, relatedFilterView: FilterView):
+        super(MeasureMode, self).__init__()
+        self.filterView = relatedFilterView
+        self.uiControls: QtWidgets.QGroupBox = QtWidgets.QGroupBox()
+
+    def get_control_groupBox(self) -> QtWidgets.QGroupBox:
+        return self.uiControls
+
+    def update_measure_viewItems(self) -> None:
+        raise NotImplementedError
+
+
+class CrossBoxMode(MeasureMode):
+    def __init__(self, *args):
+        super(CrossBoxMode, self).__init__(*args)
+        self.uiControls = CrossBoxesControls(self)
+        self.crossBoxGenerator: CrossBoxSelector = CrossBoxSelector(None)
+        self.update_measure_viewItems()
+
+    def update_measure_viewItems(self) -> None:
+        self.crossBoxGenerator.filterHeight = self.filterView.filter.height
+        self.crossBoxGenerator.filterWidth = self.filterView.filter.width
+        self.crossBoxGenerator.numBoxesAcross = int(self.uiControls.numBoxesSelector.currentText())
+
+        desiredCoverage: int = self.uiControls.coverageSpinbox.value()
+        maxCoverage: int = int(self.crossBoxGenerator.get_maximum_achievable_fraction() * 100)
+        self.uiControls.set_to_max_possible_coverage(maxCoverage)
+        if desiredCoverage > maxCoverage:
+            desiredCoverage = maxCoverage
+
+        self.crossBoxGenerator.fraction = desiredCoverage / 100
+
+        viewItems = []
+        topLefts: list = self.crossBoxGenerator.get_topLeft_of_boxes()
+        boxSize = self.crossBoxGenerator.boxSize
+        for (x, y) in topLefts:
+            newBox: MeasureBoxGraphItem = MeasureBoxGraphItem(x, y, boxSize, boxSize)
+            viewItems.append(newBox)
+
+        self.filterView.update_measure_boxes(viewItems)
+
+
+class CrossBoxesControls(QtWidgets.QGroupBox):
+    """
+    Gives a groupbox with the controls for setting up the cross boxes.
+    """
+
+    def __init__(self, measureModeParent: MeasureMode):
+        super(CrossBoxesControls, self).__init__()
+        self.setTitle('Cross Box Controls')
+        self.measureModeParent = measureModeParent
+        layout = QtWidgets.QHBoxLayout()
+        self.setLayout(layout)
+
+        layout.addWidget(QtWidgets.QLabel('Number of Boxes across:'))
+        self.numBoxesSelector = QtWidgets.QComboBox()
+        self.numBoxesSelector.addItems([str(3), str(5)])
+        self.numBoxesSelector.currentTextChanged.connect(self._config_changed)
+        layout.addWidget(self.numBoxesSelector)
+
+        layout.addStretch()
+
+        layout.addWidget(QtWidgets.QLabel('Desired Coverage (%)'))
+        self.coverageSpinbox = QtWidgets.QSpinBox()
+        self.coverageSpinbox.setFixedWidth(50)
+        self.coverageSpinbox.setMinimum(0)
+        self.coverageSpinbox.setMaximum(100)
+        self.coverageSpinbox.setValue(10)
+        self.coverageSpinbox.valueChanged.connect(self._config_changed)
+        layout.addWidget(self.coverageSpinbox)
+
+    def _config_changed(self):
+        self.measureModeParent.update_measure_viewItems()
+
+    def set_to_max_possible_coverage(self, maxCoverage:int):
+        self.coverageSpinbox.setMaximum(maxCoverage)
+        if maxCoverage < self.coverageSpinbox.value():
+            self.coverageSpinbox.valueChanged.disconnect()
+            self.coverageSpinbox.setValue(maxCoverage)
+            self.coverageSpinbox.valueChanged.connect(self._config_changed)
\ No newline at end of file

helpers.py

+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Created on Tue Jan 28 19:32:50 2020
+
+@author: luna
+"""
+
+class ParticleBinSorter(object):
+    def __init__(self):
+        super(ParticleBinSorter, self).__init__()
+        self.bins = [5, 10, 20, 50, 100, 200, 500]
+        
+    def sort_particles_into_bins(self, particleList):
+        particlesInBins = self._get_empty_bins()
+        
+        for particle in particleList:
+            binIndex = self._get_binIndex_of_particle(particle)
+            particlesInBins[binIndex].append(particle)
+        return particlesInBins
+    
+    def _get_empty_bins(self):
+        return [[] for i in range(len(self.bins)+1)]
+    
+    def _get_binIndex_of_particle(self, particle):
+        size = particle.getParticleSize()
+        binIndex = 0
+        for upperLimit in self.bins:
+            if size <= upperLimit:
+                break
+            else:
+                binIndex += 1
+        return binIndex
\ No newline at end of file

methods.py

+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Created on Tue Nov 26 17:42:33 2019
+
+@author: brandt
+"""
+import random
+import numpy as np
+from helpers import ParticleBinSorter
+
+class SubsamplingMethod(object):
+    def __init__(self, particleConatainer, desiredFraction: float = 0.2):
+        super(SubsamplingMethod, self).__init__()
+        self.particleContainer = particleConatainer
+        self.fraction = desiredFraction
+
+    def apply_subsampling_method(self):
+        raise NotImplementedError
+
+
+class RandomSampling(SubsamplingMethod):
+    #def __init__(self, particleContainer, desiredFraction=0.1):
+        #super(RandomSampling, self).__init__(particleContainer)
+        #self.fraction = desiredFraction
+
+    def apply_subsampling_method(self):
+        numOrigParticles = len(self.particleContainer.particles)
+        numParticles = self._get_number_of_random_particles(numOrigParticles)
+        subParticles = random.sample(self.particleContainer.particles, numParticles)
+        return self.fraction, subParticles
+    
+    def _get_number_of_random_particles(self, numTotalParticles):
+        return np.int(np.ceil(numTotalParticles * self.fraction))
+
+        
+class IvlevaSubsampling(SubsamplingMethod):
+    def __init__(self, particleContainer, sigma=1.65, mpFraction=0.01, errorMargin=0.1):
+        super(IvlevaSubsampling, self).__init__(particleContainer)
+        self.sigma = sigma
+        self.estimatedMPFraction = mpFraction
+        self.errorMargin = errorMargin
+    
+    def apply_subsampling_method(self):
+        N = self.particleContainer.getNumberOfParticles()
+        numParticlesMeasured = self._get_ivleva_fraction(N)
+        subParticles = random.sample(self.particleContainer.particles, numParticlesMeasured)
+        fractionMeasured = numParticlesMeasured/N
+        return fractionMeasured, subParticles
+        
+    def _get_ivleva_fraction(self, N):
+        P = self.estimatedMPFraction
+        e = P * self.errorMargin            
+        numParticlesMeasured = np.ceil(P*(1 - P) / (e**2/self.sigma**2 + P*(1-P)/N))
+        return np.int(numParticlesMeasured)
+    
+
+class SizeBinFractioning(SubsamplingMethod):
+    def __init__(self, particleConatiner, desiredfraction: float = 0.2):
+        super(SizeBinFractioning, self).__init__(particleConatiner, desiredfraction)
+        self.sorter: ParticleBinSorter = ParticleBinSorter()
+        
+    def apply_subsampling_method(self):
+        subParticlesPerBin: list = self._get_subParticles_per_bin(self.particleContainer.particles)
+        subParticles: list = []
+        for subParticleList in subParticlesPerBin:
+            for particle in subParticleList:
+                subParticles.append(particle)
+        return self.fraction, subParticles
+    
+    def _get_subParticles_per_bin(self, particleList: list):
+        particlesInBins: list = self.sorter.sort_particles_into_bins(particleList)
+        subParticlesPerBin: list = []
+        for particles in particlesInBins:
+            numParticlesInBin: int = len(particles)
+            numSubParticlesPerBin:int  = np.int(np.round(numParticlesInBin * self.fraction))
+            if numSubParticlesPerBin == 0 and numParticlesInBin > 0:
+                numSubParticlesPerBin = 1
+
+            subParticlesInBin: list = random.sample(particles, numSubParticlesPerBin)
+            subParticlesPerBin.append(subParticlesInBin)
+            
+        return subParticlesPerBin
+
+
+class SelectSquaresFromFilter(SubsamplingMethod):
+    def __init__(self, particleContainer, desiredFraction):
+        super(SelectSquaresFromFilter, self).__init__(particleContainer)
+        self.fraction = desiredFraction
+

subsampling.py

+import numpy as np
+import matplotlib.pyplot as plt
+import time
+import sys
+sys.path.append("C://Users//xbrjos//Desktop//Python")
+from gepard import dataset
+
+from methods import IvlevaSubsampling, RandomSampling, SizeBinFractioning
+from helpers import ParticleBinSorter
+from evaluation import ResultComparer
+
+fname: str = r'C:\Users\xbrjos\Desktop\temp MP\190313_Soil_5_A_50_5_1_50_1\190313_Soil_5_A_50_5_1_50_1.pkl'
+# fname: str = r'C:\Users\xbrjos\Desktop\temp MP\190326_MCII_WWTP_SB_50_2\190326_MCII_WWTP_SB_50_2.pkl'
+# fname: str = r'C:\Users\xbrjos\Desktop\temp MP\190326_MCII_WWTP_SB_50_1\190326_MCII_WWTP_SB_50_1.pkl'
+# fname: str = r'C:\Users\xbrjos\Desktop\temp MP\KWS_CT_3_ds1_all_10_2\KWS_CT_3_ds1_all_10_2.pkl'  #legacy convert not working..
+# fname: str = r'C:\Users\xbrjos\Desktop\temp MP\190201_BSB_Stroomi_ds2_R1_R2_50\190201_BSB_Stroomi_ds2_R1_R2_50.pkl'  #zvalues image missing, legacy convert fails..
+
+
+dset = dataset.loadData(fname)
+print('loaded dataset')
+
+pc = dset.particleContainer
+origParticles = pc.particles
+
+resultComparer = ResultComparer()
+numOrigMP = resultComparer._get_number_of_MP_particles(origParticles)
+print(f'orig particles: {len(origParticles)}, of which are mp: {numOrigMP}')
+# ivlevaSampling = IvlevaSubsampling(pc)
+# ivlevaFraction, ivlevaParticles = ivlevaSampling.apply_subsampling_method()
+
+t0 = time.time()
+fractions = np.arange(0.05, .55, 0.05)
+errors = []
+binErrors = []
+numIterations = 1000
+
+for fraction in fractions:
+    print('random sampling, fraction:', fraction)
+#    randomSampling = RandomSampling(pc, desiredFraction=fraction)
+    randomSampling = SizeBinFractioning(pc, fraction)
+    iterErrors = []
+    binIterErrors = []
+    for _ in range(numIterations):
+        randomFraction, randomParticles = randomSampling.apply_subsampling_method()
+        iterErrors.append(resultComparer._get_mp_count_error(origParticles, randomParticles, randomFraction))
+        bins, errorsPerBin = resultComparer._get_mp_count_error_per_bin(origParticles, randomParticles, randomFraction)
+        binIterErrors.append(errorsPerBin)
+        
+    errors.append(round(np.mean(iterErrors)*100)) #from fraction to %
+    fractionBinErrors = []
+    for binIndex in range(len(bins)+1):
+        binError = round(np.mean([binIterErrors[i][binIndex] for i in range(numIterations)]) * 100)
+        fractionBinErrors.append(binError)
+    binErrors.append(fractionBinErrors)
+
+print('random sampling took', np.round(time.time()-t0, 2), 'seonds')
+binLowerLimits = bins.copy()
+binLowerLimits.insert(0, 0)
+plt.subplot(121)
+plt.plot(fractions, errors)
+# plt.title(f'Random Sampling, averaged from {numIterations} trials, orig particle count: {len(origParticles)}')
+plt.xlabel('Fraction measured')
+plt.ylabel('Average error in MP particle count (%)')
+
+plt.subplot(122)
+for fracMeas, curBinErrors in zip(fractions, binErrors):
+    plt.plot(binLowerLimits, curBinErrors, label=np.round(fracMeas, 1))
+# plt.title('Error in MP count (%) per size bin')
+plt.xlabel('particle size')
+plt.ylabel('Average error in MP particle count (%)')
+plt.legend()
+plt.show()
+
+
+# sizeBinSampling = SizeBinFractioning(pc)
+# sizeBinParticles = sizeBinSampling.apply_subsampling_method()
\ No newline at end of file

tests/test_evaluation.py

+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Created on Wed Jan 22 13:58:25 2020
+
+@author: luna
+"""
+
+import unittest
+import random
+import sys
+sys.path.append("C://Users//xbrjos//Desktop//Python")
+import gepard
+from gepard.analysis.particleAndMeasurement import Particle, Measurement
+
+from evaluation import ResultComparer
+
+class TestResultComparer(unittest.TestCase):
+    def setUp(self):
+        self.resultComparer = ResultComparer()
+        
+    def test_get_error_per_bin(self):
+        def get_full_and_sub_particles(particleSizes, numParticlesPerSizeFull, numParticlesPerSizeSub):
+            fullParticles = []
+            subParticles = []
+            for particleSize in particleSizes:
+                for _ in range(numParticlesPerSizeFull):
+                    mpParticle = self._get_MP_particle()
+                    mpParticle.longSize = mpParticle.shortSize = particleSize
+                    fullParticles.append(mpParticle)
+                
+                for _ in range(numParticlesPerSizeSub):
+                    mpParticle = self._get_MP_particle()
+                    mpParticle.longSize = mpParticle.shortSize = particleSize
+                    subParticles.append(mpParticle)
+            
+            return fullParticles, subParticles