DistributionWidget Class Reference

The DistributionWidget class plots 1d functions corresponding to domain's Distribution1D. More...

Inheritance diagram for DistributionWidget:

Collaboration diagram for DistributionWidget:

Public Slots
void	onMouseMove (QMouseEvent *event)
	Generates label with current mouse position. More...
void	onMousePress (QMouseEvent *event)

Public Member Functions
	DistributionWidget (QWidget *parent=0)
	~DistributionWidget ()
void	plotItem ()
void	setItem (DistributionItem *item)
void	setXAxisName (const QString &xAxisName)

Private Slots
void	resetView ()
	Reset zoom range to initial state. More...

Private Member Functions
void	init_plot ()
	Clears all plottables, resets axes to initial state. More...
void	plot_distributions ()
void	plot_multiple_values ()
void	plot_single_value ()
	Plots a single bar corresponding to the value in DistributionNoteItem. More...
void	plotBars (const QVector< double > &xbars, const QVector< double > &ybars)
void	plotFunction (const QVector< double > &xFunc, const QVector< double > &ybars)
void	plotLimits (const RealLimits &limits)
	Plots red line denoting lower and upper limits, if any. More...
void	plotVerticalLine (double xMin, double yMin, double xMax, double yMax, const QColor &color=Qt::blue)
QPoint	positionForWarningSign ()
void	setPlotRange (const QPair< double, double > &xRange, const QPair< double, double > &yRange)

Private Attributes
DistributionItem *	m_item
QLabel *	m_label
QCustomPlot *	m_plot
QAction *	m_resetAction
WarningSign *	m_warningSign
QCPRange	m_xRange
QCPRange	m_yRange

Detailed Description

The DistributionWidget class plots 1d functions corresponding to domain's Distribution1D.

Definition at line 30 of file DistributionWidget.h.

Constructor & Destructor Documentation

DistributionWidget()

DistributionWidget::DistributionWidget

(

QWidget *

parent = 0

)

Definition at line 37 of file DistributionWidget.cpp.

    : QWidget(parent)
    , m_plot(new QCustomPlot)
    , m_item(0)
    , m_label(new QLabel)
    , m_resetAction(new QAction(this))
    , m_warningSign(new WarningSign(this))
{
    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 
    m_resetAction->setText("Reset View");
    connect(m_resetAction, &QAction::triggered, this, &DistributionWidget::resetView);
 
    m_label->setAlignment(Qt::AlignVCenter | Qt::AlignLeft);
    m_label->setStyleSheet("background-color:white;");
    m_label->setMargin(3);
 
    QVBoxLayout* mainLayout = new QVBoxLayout;
    mainLayout->setMargin(0);
    mainLayout->setSpacing(0);
    mainLayout->addWidget(m_plot, 1);
    mainLayout->addWidget(m_label);
    setLayout(mainLayout);
 
    setStyleSheet("background-color:white;");
    connect(m_plot, &QCustomPlot::mousePress, this, &DistributionWidget::onMousePress);
    connect(m_plot, &QCustomPlot::mouseMove, this, &DistributionWidget::onMouseMove);
}

References m_label, m_plot, m_resetAction, onMouseMove(), onMousePress(), and resetView().

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~DistributionWidget()

DistributionWidget::~DistributionWidget

(

)

Definition at line 66 of file DistributionWidget.cpp.

{
    if (m_item)
        m_item->mapper()->unsubscribe(this);
}

References m_item, SessionItem::mapper(), and ModelMapper::unsubscribe().

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Member Function Documentation

init_plot()

void DistributionWidget::init_plot ( )

private

Clears all plottables, resets axes to initial state.

Definition at line 147 of file DistributionWidget.cpp.

{
    m_warningSign->clear();
 
    m_plot->clearGraphs();
    m_plot->clearItems();
    m_plot->clearPlottables();
    m_plot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectAxes
                            | QCP::iSelectLegend | QCP::iSelectPlottables);
    m_plot->yAxis->setLabel("probability");
    m_plot->xAxis2->setVisible(true);
    m_plot->yAxis2->setVisible(true);
    m_plot->xAxis2->setTickLabels(false);
    m_plot->yAxis2->setTickLabels(false);
    m_plot->xAxis2->setTicks(false);
    m_plot->yAxis2->setTicks(false);
 
    setPlotRange(default_xrange, default_yrange);
}

References WarningSign::clear(), m_plot, m_warningSign, and setPlotRange().

Referenced by plotItem().

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onMouseMove

void DistributionWidget::onMouseMove ( QMouseEvent *  event )

slot

Generates label with current mouse position.

Definition at line 114 of file DistributionWidget.cpp.

{
    QPoint point = event->pos();
    double xPos = m_plot->xAxis->pixelToCoord(point.x());
    double yPos = m_plot->yAxis->pixelToCoord(point.y());
 
    if (m_plot->xAxis->range().contains(xPos) && m_plot->yAxis->range().contains(yPos)) {
        QString text = QString("[x:%1, y:%2]").arg(xPos).arg(yPos);
        m_label->setText(text);
    }
}

References m_label, and m_plot.

Referenced by DistributionWidget().

onMousePress

void DistributionWidget::onMousePress ( QMouseEvent *  event )

slot

Definition at line 126 of file DistributionWidget.cpp.

{
    if (event->button() == Qt::RightButton) {
        QPoint point = event->globalPos();
        QMenu menu;
        menu.addAction(m_resetAction);
        menu.exec(point);
    }
}

References m_resetAction.

Referenced by DistributionWidget().

plot_distributions()

void DistributionWidget::plot_distributions ( )

private

Definition at line 167 of file DistributionWidget.cpp.

{
    if (m_item->modelType() == "DistributionNone")
        plot_single_value();
 
    else
        plot_multiple_values();
}

References m_item, SessionItem::modelType(), plot_multiple_values(), and plot_single_value().

Referenced by plotItem().

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plot_multiple_values()

void DistributionWidget::plot_multiple_values ( )

private

Definition at line 191 of file DistributionWidget.cpp.

{
    ASSERT(m_item->displayName() != "DistributionNone");
 
    int numberOfSamples = m_item->getItemValue(DistributionItem::P_NUMBER_OF_SAMPLES).toInt();
    double sigmafactor(0.0);
    if (m_item->isTag(DistributionItem::P_SIGMA_FACTOR))
        sigmafactor = m_item->getItemValue(DistributionItem::P_SIGMA_FACTOR).toDouble();
 
    RealLimits limits;
    if (m_item->isTag(DistributionItem::P_LIMITS)) {
        auto& limitsItem = m_item->groupItem<RealLimitsItem>(DistributionItem::P_LIMITS);
        limits = limitsItem.createRealLimits();
    }
    plotLimits(limits);
 
    auto dist = m_item->createDistribution();
 
    // Calculating bars
    std::vector<double> xp = dist->equidistantPoints(numberOfSamples, sigmafactor, limits);
    std::vector<double> yp(xp.size());
    std::transform(xp.begin(), xp.end(), yp.begin(),
                   [&](double value) { return dist->probabilityDensity(value); });
    double sumOfWeights = std::accumulate(yp.begin(), yp.end(), 0.0);
    ASSERT(sumOfWeights != 0.0);
 
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
    QVector<double> xBar(xp.begin(), xp.end());
#else
    QVector<double> xBar = QVector<double>::fromStdVector(xp);
#endif
 
    QVector<double> yBar(xBar.size());
    std::transform(yp.begin(), yp.end(), yBar.begin(),
                   [&](double value) { return value / sumOfWeights; });
 
    plotBars(xBar, yBar);
 
    // calculating function points (for interval, bigger than bars)
    auto xRange = xRangeForValues(xBar);
    const int number_of_points = 400;
    std::vector<double> xf =
        dist->equidistantPointsInRange(number_of_points, xRange.first, xRange.second);
    std::vector<double> yf(xf.size());
    std::transform(xf.begin(), xf.end(), yf.begin(),
                   [&](double value) { return dist->probabilityDensity(value); });
 
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
    QVector<double> xFunc(xf.begin(), xf.end());
#else
    QVector<double> xFunc = QVector<double>::fromStdVector(xf);
#endif
    QVector<double> yFunc(xFunc.size());
    std::transform(yf.begin(), yf.end(), yFunc.begin(),
                   [&](double value) { return value / sumOfWeights; });
 
    plotFunction(xFunc, yFunc);
}

References ASSERT, DistributionItem::createDistribution(), SessionItem::displayName(), GUIHelpers::fromStdVector(), SessionItem::getItemValue(), SessionItem::groupItem(), SessionItem::isTag(), m_item, DistributionItem::P_LIMITS, DistributionItem::P_NUMBER_OF_SAMPLES, DistributionItem::P_SIGMA_FACTOR, plotBars(), plotFunction(), and plotLimits().

Referenced by plot_distributions().

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plot_single_value()

void DistributionWidget::plot_single_value ( )

private

Plots a single bar corresponding to the value in DistributionNoteItem.

Definition at line 178 of file DistributionWidget.cpp.

{
    ASSERT(m_item->displayName() == "DistributionNone");
 
    double value = m_item->getItemValue(DistributionNoneItem::P_MEAN).toDouble();
 
    QVector<double> xPos = QVector<double>() << value;
    QVector<double> yPos = QVector<double>() << 1.0;
    plotBars(xPos, yPos);
 
    plotVerticalLine(value, default_yrange.first, value, default_yrange.second);
}

References ASSERT, SessionItem::displayName(), SessionItem::getItemValue(), m_item, SymmetricDistributionItem::P_MEAN, plotBars(), and plotVerticalLine().

Referenced by plot_distributions().

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plotBars()

void DistributionWidget::plotBars ( const QVector< double > &  xbars, const QVector< double > &  ybars  )

private

Definition at line 259 of file DistributionWidget.cpp.

{
    ASSERT(xbars.size() > 0);
 
    auto xRange = xRangeForValues(xbars);
    auto yRange = yRangeForValues(ybars);
    setPlotRange(xRange, yRange);
 
    double barWidth(0.0);
    if (xbars.size() == 1)
        barWidth = optimalBarWidth(xRange.first, xRange.second, xbars.size());
    else
        barWidth = optimalBarWidth(xbars.front(), xbars.back(), xbars.size());
 
    QCPBars* bars = new QCPBars(m_plot->xAxis, m_plot->yAxis);
 
    bars->setWidth(barWidth);
    bars->setData(xbars, ybars);
}

References ASSERT, m_plot, and setPlotRange().

Referenced by plot_multiple_values(), and plot_single_value().

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plotFunction()

void DistributionWidget::plotFunction ( const QVector< double > &  xFunc, const QVector< double > &  ybars  )

private

Definition at line 279 of file DistributionWidget.cpp.

{
    auto xRange = xRangeForValues(xFunc);
    auto yRange = yRangeForValues(yFunc);
    setPlotRange(xRange, yRange);
 
    m_plot->addGraph();
    m_plot->graph(0)->setData(xFunc, yFunc);
}

References m_plot, and setPlotRange().

Referenced by plot_multiple_values().

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plotItem()

void DistributionWidget::plotItem

(

)

Definition at line 95 of file DistributionWidget.cpp.

{
    init_plot();
 
    try {
        plot_distributions();
 
    } catch (const std::exception& ex) {
        init_plot();
 
        QString message = QString("Wrong parameters\n\n").append(QString::fromStdString(ex.what()));
        m_warningSign->setWarningMessage(message);
    }
 
    m_plot->replot();
}

References init_plot(), m_plot, m_warningSign, plot_distributions(), and WarningSign::setWarningMessage().

Referenced by setItem().

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plotLimits()

void DistributionWidget::plotLimits ( const RealLimits &  limits )

private

Plots red line denoting lower and upper limits, if any.

Definition at line 304 of file DistributionWidget.cpp.

{
    if (limits.hasLowerLimit()) {
        double value = limits.lowerLimit();
        plotVerticalLine(value, default_yrange.first, value, default_yrange.second, Qt::red);
    }
 
    if (limits.hasUpperLimit()) {
        double value = limits.upperLimit();
        plotVerticalLine(value, default_yrange.first, value, default_yrange.second, Qt::red);
    }
}

References RealLimits::hasLowerLimit(), RealLimits::hasUpperLimit(), RealLimits::lowerLimit(), plotVerticalLine(), and RealLimits::upperLimit().

Referenced by plot_multiple_values().

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plotVerticalLine()

void DistributionWidget::plotVerticalLine ( double  xMin, double  yMin, double  xMax, double  yMax, const QColor &  color = Qt::blue  )

private

Definition at line 289 of file DistributionWidget.cpp.

{
    QCPItemLine* line = new QCPItemLine(m_plot);
 
    QPen pen(color, 1, Qt::DashLine);
    line->setPen(pen);
    line->setSelectable(true);
 
    line->start->setCoords(xMin, yMin);
    line->end->setCoords(xMax, yMax);
}

References m_plot.

Referenced by plot_single_value(), and plotLimits().

positionForWarningSign()

QPoint DistributionWidget::positionForWarningSign ( )

private

resetView

void DistributionWidget::resetView ( )

privateslot

Reset zoom range to initial state.

Definition at line 138 of file DistributionWidget.cpp.

{
    m_plot->xAxis->setRange(m_xRange);
    m_plot->yAxis->setRange(m_yRange);
    m_plot->replot();
}

References m_plot, m_xRange, and m_yRange.

Referenced by DistributionWidget().

setItem()

void DistributionWidget::setItem

(

DistributionItem *

item

)

Definition at line 72 of file DistributionWidget.cpp.

{
    if (m_item == item) {
        return;
 
    } else {
        if (m_item) {
            disconnect();
            m_item->mapper()->unsubscribe(this);
        }
 
        m_item = item;
        if (!m_item)
            return;
 
        plotItem();
 
        m_item->mapper()->setOnPropertyChange([this](QString) { plotItem(); }, this);
 
        m_item->mapper()->setOnItemDestroy([this](SessionItem*) { m_item = 0; }, this);
    }
}

References m_item, SessionItem::mapper(), plotItem(), ModelMapper::setOnItemDestroy(), ModelMapper::setOnPropertyChange(), and ModelMapper::unsubscribe().

Referenced by DistributionEditor::onPropertyChanged(), and DistributionEditor::subscribeToItem().

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setPlotRange()

void DistributionWidget::setPlotRange ( const QPair< double, double > &  xRange, const QPair< double, double > &  yRange  )

private

Definition at line 250 of file DistributionWidget.cpp.

{
    m_xRange = QCPRange(xRange.first, xRange.second);
    m_yRange = QCPRange(yRange.first, yRange.second);
    m_plot->xAxis->setRange(m_xRange);
    m_plot->yAxis->setRange(m_yRange);
}

References m_plot, m_xRange, and m_yRange.

Referenced by init_plot(), plotBars(), and plotFunction().

setXAxisName()

void DistributionWidget::setXAxisName

(

const QString &

xAxisName

)

Definition at line 317 of file DistributionWidget.cpp.

{
    m_plot->xAxis->setLabel(xAxisName);
}

References m_plot.

Referenced by DistributionEditor::setNameOfEditor().

Member Data Documentation

m_item

DistributionItem* DistributionWidget::m_item

private

Definition at line 62 of file DistributionWidget.h.

Referenced by ~DistributionWidget(), plot_distributions(), plot_multiple_values(), plot_single_value(), and setItem().

m_label

QLabel* DistributionWidget::m_label

private

Definition at line 63 of file DistributionWidget.h.

Referenced by DistributionWidget(), and onMouseMove().

m_plot

QCustomPlot* DistributionWidget::m_plot

private

Definition at line 61 of file DistributionWidget.h.

Referenced by DistributionWidget(), init_plot(), onMouseMove(), plotBars(), plotFunction(), plotItem(), plotVerticalLine(), resetView(), setPlotRange(), and setXAxisName().

m_resetAction

QAction* DistributionWidget::m_resetAction

private

Definition at line 64 of file DistributionWidget.h.

Referenced by DistributionWidget(), and onMousePress().

m_warningSign

WarningSign* DistributionWidget::m_warningSign

private

Definition at line 66 of file DistributionWidget.h.

Referenced by init_plot(), and plotItem().

m_xRange

QCPRange DistributionWidget::m_xRange

private

Definition at line 65 of file DistributionWidget.h.

Referenced by resetView(), and setPlotRange().

m_yRange

QCPRange DistributionWidget::m_yRange

private

Definition at line 65 of file DistributionWidget.h.

Referenced by resetView(), and setPlotRange().

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The documentation for this class was generated from the following files:

• /home/www/ba/GUI/coregui/Views/InfoWidgets/DistributionWidget.h
• /home/www/ba/GUI/coregui/Views/InfoWidgets/DistributionWidget.cpp