DistributionPlot Class Reference

Description

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

Definition at line 30 of file DistributionPlot.h.

Inheritance diagram for DistributionPlot:

Collaboration diagram for DistributionPlot:

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

Public Member Functions
	DistributionPlot (QWidget *parent=nullptr)
void	plotItem ()
void	setItem (DistributionItem *item)
void	setShowMouseCoords (bool b)
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 > &yFunc)
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	positionForCautionSign ()
void	setPlotRange (const QPair< double, double > &xRange, const QPair< double, double > &yRange)

Private Attributes
CautionSign *	m_cautionSign
DistributionItem *	m_item
QLabel *	m_label
QCustomPlot *	m_plot
QAction *	m_resetAction
QCPRange	m_xRange
QCPRange	m_yRange

Constructor & Destructor Documentation

DistributionPlot()

DistributionPlot::DistributionPlot

(

QWidget *

parent = nullptr

)

Definition at line 39 of file DistributionPlot.cpp.

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

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

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Member Function Documentation

init_plot()

void DistributionPlot::init_plot ( )

private

Clears all plottables, resets axes to initial state.

Definition at line 130 of file DistributionPlot.cpp.

{
    m_cautionSign->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 CautionSign::clear(), m_cautionSign, m_plot, and setPlotRange().

Referenced by plotItem().

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onMouseMove

void DistributionPlot::onMouseMove ( QMouseEvent *  event )

slot

Generates label with current mouse position.

Definition at line 97 of file DistributionPlot.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 DistributionPlot().

onMousePress

void DistributionPlot::onMousePress ( QMouseEvent *  event )

slot

Definition at line 109 of file DistributionPlot.cpp.

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

References m_resetAction.

Referenced by DistributionPlot().

plot_distributions()

void DistributionPlot::plot_distributions ( )

private

Definition at line 150 of file DistributionPlot.cpp.

{
    if (m_item->is<DistributionNoneItem>())
        plot_single_value();
 
    else
        plot_multiple_values();
}

References DistributionItem::is(), m_item, plot_multiple_values(), and plot_single_value().

Referenced by plotItem().

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plot_multiple_values()

void DistributionPlot::plot_multiple_values ( )

private

Definition at line 174 of file DistributionPlot.cpp.

{
    ASSERT(!m_item->is<DistributionNoneItem>());
 
    size_t numberOfSamples = m_item->numberOfSamples();
    double sigmafactor(0.0);
    if (m_item->hasSigmaFactor())
        sigmafactor = m_item->sigmaFactor();
 
    plotLimits(m_item->limits());
 
    auto dist = m_item->createDistribution();
 
    // Calculating bars
    std::vector<double> xp =
        dist->equidistantPoints(numberOfSamples, sigmafactor, m_item->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 DistributionItem::createDistribution(), DistributionItem::hasSigmaFactor(), DistributionItem::is(), DistributionItem::limits(), m_item, plotBars(), plotFunction(), and plotLimits().

Referenced by plot_distributions().

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plot_single_value()

void DistributionPlot::plot_single_value ( )

private

Plots a single bar corresponding to the value in DistributionNoteItem.

Definition at line 161 of file DistributionPlot.cpp.

{
    ASSERT(m_item->is<DistributionNoneItem>());
 
    double value = dynamic_cast<SymmetricResolutionItem*>(m_item)->mean();
 
    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 DistributionItem::is(), m_item, plotBars(), and plotVerticalLine().

Referenced by plot_distributions().

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plotBars()

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

private

Definition at line 238 of file DistributionPlot.cpp.

{
    ASSERT(!xbars.empty());
 
    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());
 
    auto* bars = new QCPBars(m_plot->xAxis, m_plot->yAxis);
 
    bars->setWidth(barWidth);
    bars->setData(xbars, ybars);
}

References m_plot, and setPlotRange().

Referenced by plot_multiple_values(), and plot_single_value().

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plotFunction()

void DistributionPlot::plotFunction ( const QVector< double > &  xFunc, const QVector< double > &  yFunc  )

private

Definition at line 258 of file DistributionPlot.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 DistributionPlot::plotItem

(

)

Definition at line 79 of file DistributionPlot.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_cautionSign->setCautionMessage(message);
    }
 
    m_plot->replot();
}

References init_plot(), m_cautionSign, m_plot, plot_distributions(), and CautionSign::setCautionMessage().

Referenced by setItem(), DistributionEditor::updatePlot(), and InclinationAnglesEditor::updatePlot().

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plotLimits()

void DistributionPlot::plotLimits ( const RealLimits &  limits )

private

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

Definition at line 283 of file DistributionPlot.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 plotVerticalLine().

Referenced by plot_multiple_values().

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plotVerticalLine()

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

private

Definition at line 268 of file DistributionPlot.cpp.

{
    auto* 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().

positionForCautionSign()

QPoint DistributionPlot::positionForCautionSign ( )

private

resetView

void DistributionPlot::resetView ( )

privateslot

Reset zoom range to initial state.

Definition at line 121 of file DistributionPlot.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 DistributionPlot().

setItem()

void DistributionPlot::setItem

(

DistributionItem *

item

)

Definition at line 69 of file DistributionPlot.cpp.

{
    ASSERT(item);
    if (m_item == item)
        return;
 
    m_item = item;
    plotItem();
}

References m_item, and plotItem().

Referenced by DistributionEditor::updatePlot(), and InclinationAnglesEditor::updatePlot().

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setPlotRange()

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

private

Definition at line 229 of file DistributionPlot.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().

setShowMouseCoords()

void DistributionPlot::setShowMouseCoords

(

bool

b

)

Definition at line 301 of file DistributionPlot.cpp.

{
    m_label->setVisible(b);
}

References m_label.

Referenced by DistributionEditor::DistributionEditor(), and InclinationAnglesEditor::InclinationAnglesEditor().

setXAxisName()

void DistributionPlot::setXAxisName

(

const QString &

xAxisName

)

Definition at line 296 of file DistributionPlot.cpp.

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

References m_plot.

Member Data Documentation

m_cautionSign

CautionSign* DistributionPlot::m_cautionSign

private

Definition at line 66 of file DistributionPlot.h.

Referenced by init_plot(), and plotItem().

m_item

DistributionItem* DistributionPlot::m_item

private

Definition at line 62 of file DistributionPlot.h.

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

m_label

QLabel* DistributionPlot::m_label

private

Definition at line 63 of file DistributionPlot.h.

Referenced by DistributionPlot(), onMouseMove(), and setShowMouseCoords().

m_plot

QCustomPlot* DistributionPlot::m_plot

private

Definition at line 61 of file DistributionPlot.h.

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

m_resetAction

QAction* DistributionPlot::m_resetAction

private

Definition at line 64 of file DistributionPlot.h.

Referenced by DistributionPlot(), and onMousePress().

m_xRange

QCPRange DistributionPlot::m_xRange

private

Definition at line 65 of file DistributionPlot.h.

Referenced by resetView(), and setPlotRange().

m_yRange

QCPRange DistributionPlot::m_yRange

private

Definition at line 65 of file DistributionPlot.h.

Referenced by resetView(), and setPlotRange().

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

• /home/build/builds/o5h8MZZm/0/mlz/bornagain/GUI/View/Instrument/DistributionPlot.h
• /home/build/builds/o5h8MZZm/0/mlz/bornagain/GUI/View/Instrument/DistributionPlot.cpp