C++ QwtPlotGrid::enableYMin方法代码示例

void HistPlot::populate()
{
	setTitle("Watching TV during a weekend");
	setAxisTitle(QwtPlot::yLeft, "Number of People");
	setAxisTitle(QwtPlot::xBottom, "Number of Hours");

	QwtPlotGrid *grid = new QwtPlotGrid;
	grid->enableX(false);
	grid->enableY(true);
	grid->enableXMin(false);
	grid->enableYMin(false);
	grid->setMajPen(QPen(Qt::black, 0, Qt::SolidLine));
	grid->attach(this);

	const double juneValues[] = { 7, 19, 24, 32, 10, 5, 3 };
	const double novemberValues[] = { 4, 15, 22, 34, 13, 8, 4 };

	Histogram *histogramJune = new Histogram("Summer", Qt::red);
	histogramJune->setValues(
		sizeof(juneValues) / sizeof(double), juneValues);
	histogramJune->attach(this);

	Histogram *histogramNovember = new Histogram("Winter", Qt::blue);
	histogramNovember->setValues(
		sizeof(novemberValues) / sizeof(double), novemberValues);
	histogramNovember->attach(this);
}

Plot::Plot( QWidget *parent ):
    QwtPlot( parent )
{
    setAutoFillBackground( true );
    setPalette( Qt::darkGray );
    setCanvasBackground( Qt::white );

    plotLayout()->setAlignCanvasToScales( true );

    initAxis( QwtAxis::yLeft, "Local Time", Qt::LocalTime );
    initAxis( QwtAxis::yRight, 
        "Coordinated Universal Time ( UTC )", Qt::UTC );

    QwtPlotPanner *panner = new QwtPlotPanner( canvas() );
    QwtPlotMagnifier *magnifier = new QwtPlotMagnifier( canvas() );

    for ( int axis = 0; axis < QwtAxis::PosCount; axis++ )
    {
        const bool on = QwtAxis::isYAxis( axis );

        setAxisVisible( axis, on );
        panner->setAxisEnabled( axis, on );
        magnifier->setAxisEnabled( axis, on );
    }

    QwtPlotGrid *grid = new QwtPlotGrid();
    grid->setMajorPen( Qt::black, 0, Qt::SolidLine );
    grid->setMinorPen( Qt::gray, 0 , Qt::SolidLine );
    grid->enableX( false );
    grid->enableXMin( false );
    grid->enableY( true );
    grid->enableYMin( true );

    grid->attach( this );
}

int main(int argc, char **argv)
{
    QApplication app(argc, argv);

    QwtPlot plot;
    plot.setCanvasBackground(QColor(Qt::white));
    plot.setTitle("Bar Chart");

	QwtPlotGrid *grid = new QwtPlotGrid;
	grid->enableX(false);
	grid->enableYMin(true);
	grid->setMajPen(QPen(Qt::black, 0, Qt::DotLine));
	grid->setMinPen(QPen(Qt::gray, 0 , Qt::DotLine));
	grid->attach(&plot);

	BarChartItem *item = new BarChartItem();
	item->attach(&plot);
	QList< QPair<int, QString> > barHeights;
	barHeights.append(QPair<int, QString>(10, ""));
	barHeights.append(QPair<int, QString>(100, ""));
	barHeights.append(QPair<int, QString>(20, ""));
	item->setData(barHeights);

	plot.enableAxis(QwtPlot::xBottom, false);

	plot.resize(600, 400);
	plot.show();

	return app.exec();
}

SimDialog::SimDialog( QWidget * parent, Qt::WFlags f) 
	: QDialog(parent, f)
{
  setupUi(this);

  // setup the plot ...
  m_plot->setTitle("Comparing Similarity Measures");
  m_plot->insertLegend(new QwtLegend(), QwtPlot::BottomLegend);

  // set up the axes ...
  m_plot->setAxisTitle(QwtPlot::xBottom, "Variations");
  m_plot->setAxisScale(QwtPlot::xBottom, -10, 10);

  m_plot->setAxisTitle(QwtPlot::yLeft, "Similarity");
  m_plot->setAxisScale(QwtPlot::yLeft, -1.5, 1.5);

  // enable grid ...
  QwtPlotGrid *grid = new QwtPlotGrid;
  grid->enableXMin(true);
  grid->enableYMin(true);
  grid->setMajPen(QPen(Qt::black, 0, Qt::DotLine));
  grid->setMinPen(QPen(Qt::gray, 0 , Qt::DotLine));
  grid->attach(m_plot);

  //  Insert zero line at y = 0
  QwtPlotMarker *mY = new QwtPlotMarker();
  mY->setLabelAlignment(Qt::AlignRight|Qt::AlignTop);
  mY->setLineStyle(QwtPlotMarker::HLine);
  mY->setYValue(0.0);
  mY->attach(m_plot);

  //  Insert zero line at x = 0
  QwtPlotMarker *mX = new QwtPlotMarker();
  mX->setLabelAlignment(Qt::AlignRight|Qt::AlignTop);
  mX->setLineStyle(QwtPlotMarker::VLine);
  mX->setXValue(0.0);
  mX->attach(m_plot);

  // Insert new curves
  cReg = new QwtPlotCurve("Regular Similarity Measure");
  cReg->attach(m_plot);

  cOct = new QwtPlotCurve("Octree based Similarity Measure");
  cOct->attach(m_plot);

  // Set curve styles
  cReg->setPen(QPen(Qt::red, 2));
  cOct->setPen(QPen(Qt::blue, 2));

  // Populate the volume combos ...
  MainWindow* _win  = (MainWindow *)this->parent();
  viewer3d *  _view = (viewer3d *) _win->getViewer();
  QList<Volume*> _vols = _view->getVolumes();

  // append Volume names to combo boxes ...
  // Need to modify Volume class so that it stored patient name ...
  // More importantly modify PatientBrowser so that the data can be directly
  // loaded.
}

// Init X axis.
void DataPlot::setGridPlot()
{
    QwtPlotGrid *grid = new QwtPlotGrid;
    grid->enableXMin(true);
    grid->enableYMin(true);
    grid->setMajPen(QPen(Qt::black, 0, Qt::DotLine));
    grid->setMinPen(QPen(Qt::gray, 0 , Qt::DotLine));
    grid->attach(this);
}

Plot::Plot(QWidget *parent):
    QwtPlot(parent),
    d_paintedPoints(0),
    d_interval(0.0, 10.0),
    d_timerId(-1)
{
    d_directPainter = new QwtPlotDirectPainter();

    setAutoReplot(false);

    // We don't need the cache here
    canvas()->setPaintAttribute(QwtPlotCanvas::PaintCached, false);
    //canvas()->setPaintAttribute(QwtPlotCanvas::PaintPacked, false);


#if defined(Q_WS_X11)
    // Even if not recommended by TrollTech, Qt::WA_PaintOutsidePaintEvent
    // works on X11. This has a nice effect on the performance.
    
    canvas()->setAttribute(Qt::WA_PaintOutsidePaintEvent, true);
    canvas()->setAttribute(Qt::WA_PaintOnScreen, true);
#endif

    plotLayout()->setAlignCanvasToScales(true);

    setAxisTitle(QwtPlot::xBottom, "Time [s]");
    setAxisScale(QwtPlot::xBottom, d_interval.minValue(), d_interval.maxValue()); 
    setAxisScale(QwtPlot::yLeft, -200.0, 200.0);

    QwtPlotGrid *grid = new QwtPlotGrid();
    grid->setPen(QPen(Qt::gray, 0.0, Qt::DotLine));
    grid->enableX(true);
    grid->enableXMin(true);
    grid->enableY(true);
    grid->enableYMin(false);
    grid->attach(this);

    d_origin = new QwtPlotMarker();
    d_origin->setLineStyle(QwtPlotMarker::Cross);
    d_origin->setValue(d_interval.minValue() + d_interval.width() / 2.0, 0.0);
    d_origin->setLinePen(QPen(Qt::gray, 0.0, Qt::DashLine));
    d_origin->attach(this);

    d_curve = new QwtPlotCurve();
    d_curve->setStyle(QwtPlotCurve::Lines);
    d_curve->setPen(QPen(Qt::green));
#if 1
    d_curve->setRenderHint(QwtPlotItem::RenderAntialiased, true);
#endif
#if 1
    d_curve->setPaintAttribute(QwtPlotCurve::ClipPolygons, false);
#endif
    d_curve->setData(new CurveData());
    d_curve->attach(this);
}

void GenericHistogramView::populate()
{
  QwtPlotGrid* grid = new QwtPlotGrid();
  grid->enableX(false);
  grid->enableY(true);
  grid->enableXMin(false);
  grid->enableYMin(false);
  grid->setMajPen(QPen(Qt::black, 0, Qt::DotLine));
  grid->attach(_qwtPlot);

	for(unsigned int i = 0; i < _image->getNbChannels(); ++i)
	{
		imagein::Array<unsigned int>* histogram;
		if(_projection)
			histogram = new imagein::ProjectionHistogram(*_image, _value, _horizontal, *_rectangle, i);
		else
			histogram = new imagein::Histogram(*_image, i, *_rectangle);
		
		int values[histogram->getWidth()];

		for(unsigned int j = 0; j < histogram->getWidth(); ++j)
			values[j] = (*histogram)[j];
		
		GraphicalHistogram* graphicalHisto;
		switch(i)
		{
			case 0:
				if(_image->getNbChannels() == 1 || _image->getNbChannels() == 2)
					graphicalHisto = new GraphicalHistogram("Black", Qt::black);
				else
					graphicalHisto = new GraphicalHistogram("Red", Qt::red);
			break;
			case 1:
				if(_image->getNbChannels() == 1 || _image->getNbChannels() == 2)
					graphicalHisto = new GraphicalHistogram("Alpha", Qt::white);
				else
					graphicalHisto = new GraphicalHistogram("Green", Qt::green);
			break;
			case 2:
				graphicalHisto = new GraphicalHistogram("Blue", Qt::blue);
			break;
			case 3:
				graphicalHisto = new GraphicalHistogram("Alpha", Qt::black);
			break;
			default:
				graphicalHisto = new GraphicalHistogram("Default", Qt::black);
		}
		graphicalHisto->setValues(sizeof(values) / sizeof(int), values);
		if(_horizontal)
			graphicalHisto->setOrientation(Qt::Horizontal);
		graphicalHisto->attach(_qwtPlot);
    _graphicalHistos.push_back(graphicalHisto);
	}
}

QmitkHistogramWidget::QmitkHistogramWidget(QWidget * parent, bool showreport)
  : QDialog(parent)
{
  QBoxLayout *layout = new QVBoxLayout(this);

  //***histogram***

  QGroupBox *hgroupbox = new QGroupBox("", this);

  hgroupbox->setMinimumSize(900, 400);

  m_Plot = new QwtPlot(hgroupbox);
  m_Plot->setCanvasBackground(QColor(Qt::white));
  m_Plot->setTitle("Histogram");
  QwtText text = m_Plot->titleLabel()->text();
  text.setFont(QFont("Helvetica", 12, QFont::Normal));

  QwtPlotGrid *grid = new QwtPlotGrid;
  grid->enableXMin(true);
  grid->enableYMin(true);
  grid->setMajPen(QPen(Qt::black, 0, Qt::DotLine));
  grid->setMinPen(QPen(Qt::gray, 0 , Qt::DotLine));
  grid->attach(m_Plot);

  layout->addWidget(hgroupbox);

  layout->setSpacing(20);

  if (showreport == true)
  {
    //***report***
    QGroupBox *rgroupbox = new QGroupBox("", this);

    rgroupbox->setMinimumSize(900, 400);

    QLabel *label = new QLabel("Gray  Value  Analysis", rgroupbox);
    label->setAlignment(Qt::AlignHCenter);
    label->setFont(QFont("Helvetica", 14, QFont::Bold));

    m_Textedit = new QTextEdit(rgroupbox);
    m_Textedit->setFont(QFont("Helvetica", 12, QFont::Normal));
    m_Textedit->setReadOnly(true);

    layout->addWidget(rgroupbox);
  }

  m_Picker = new QwtPlotPicker(QwtPlot::xBottom, QwtPlot::yLeft,
    QwtPicker::PointSelection, 
    QwtPlotPicker::NoRubberBand, QwtPicker::AlwaysOn, 
    m_Plot->canvas());

  connect(m_Picker, SIGNAL(selected(const QwtDoublePoint &)),
    SLOT(OnSelect(const QwtDoublePoint &)));
}

int main(int argc, char **argv)
{
    QApplication a(argc, argv);

    QwtPlot plot;
    plot.setCanvasBackground(QColor(Qt::white));
    plot.setTitle("Histogram");

    QwtPlotGrid *grid = new QwtPlotGrid;
    grid->enableXMin(true);
    grid->enableYMin(true);
    grid->setMajPen(QPen(Qt::black, 0, Qt::DotLine));
    grid->setMinPen(QPen(Qt::gray, 0 , Qt::DotLine));
    grid->attach(&plot);

    HistogramItem *histogram = new HistogramItem();
    histogram->setColor(Qt::darkCyan);

    const int numValues = 20;

    QwtArray<QwtDoubleInterval> intervals(numValues);
    QwtArray<double> values(numValues);

    double pos = 0.0;
    for ( int i = 0; i < (int)intervals.size(); i++ )
    {
        const int width = 5 + rand() % 15;
        const int value = rand() % 100;

        intervals[i] = QwtDoubleInterval(pos, pos + double(width));
        values[i] = value; 

        pos += width;
    }

    histogram->setData(QwtIntervalData(intervals, values));
    histogram->attach(&plot);

    plot.setAxisScale(QwtPlot::yLeft, 0.0, 100.0);
    plot.setAxisScale(QwtPlot::xBottom, 0.0, pos);
    plot.replot();

#if QT_VERSION < 0x040000
    a.setMainWidget(&plot);
#endif

    plot.resize(600,400);
    plot.show();

    return a.exec(); 
}

void AnalogGraph::populate()
{
    QwtPlotGrid *grid = new QwtPlotGrid;

    grid->enableX(false);
    grid->enableY(false);
    grid->enableXMin(false);
    grid->enableYMin(false);
    grid->setMajPen(QPen(Qt::black, 0, Qt::DotLine));

    grid->attach(this);

    analogHistogram_ = new Histogram("", QColor(80, 180, 220, 150));
    //analogHistogram_->setValues(analogChannels_);
    analogHistogram_->attach(this);
}

int main( int argc, char **argv )
{
  //using HistogramItem = QwtPlotItem;
  using HistogramItem = QwtPlotHistogram;
  //using QwtIntervalData = QwtSeriesData<QwtIntervalSample>;

  QApplication a(argc, argv);
  QwtPlot plot;
  plot.setCanvasBackground(QColor(Qt::white));
  plot.setTitle("Histogram");
  QwtPlotGrid *grid = new QwtPlotGrid;
  grid->enableXMin(true);
  grid->enableYMin(true);

  grid->setMajorPen(QPen(Qt::black, 0, Qt::DotLine));
  grid->setMinorPen(QPen(Qt::gray, 0 , Qt::DotLine));
  grid->attach(&plot);
  HistogramItem *histogram = new HistogramItem;
  //histogram->setColor(Qt::darkCyan);
  const int numValues = 20;
  //QwtArray<QwtDoubleInterval> intervals(numValues);
  QwtArray<QwtIntervalSample> intervals(numValues);
  QwtArray<double> values(numValues);
  double pos = 0.0;
  for ( int i = 0; i < (int)intervals.size(); i++ )
  {
    //const int width = 5 + rand() % 15;
    const int value = rand() % 100;
    //intervals[i] = QwtDoubleInterval(pos, pos + double(width));
    intervals[i] = QwtIntervalSample(value, pos, pos + double(width));
    //values[i] = value;
    pos += width;
  }

  //histogram->setData(QwtIntervalData(intervals, values));
  histogram->setSamples(intervals);
  //histogram->setSamples(QwtIntervalData(intervals, values));
  //QwtIntervalData d;
  //histogram->setData(d);
  histogram->attach(&plot);
  plot.setAxisScale(QwtPlot::yLeft, 0.0, 100.0);
  plot.setAxisScale(QwtPlot::xBottom, 0.0, pos);
  plot.replot();
  plot.resize(600,400);
  plot.show();
  return a.exec();
}

void ICResultChart::populate()
{
    QwtPlotGrid *grid = new QwtPlotGrid;
    grid->enableX( false );
    grid->enableY( true );
    grid->enableXMin( false );
    grid->enableYMin( false );
    grid->setMajorPen( Qt::black, 0, Qt::DotLine );
    grid->attach( this );

    QColor color = Qt::blue;
    color.setAlpha(180);

    QwtColumnSymbol *symbol = new QwtColumnSymbol(QwtColumnSymbol::Box);
    symbol->setLineWidth(2);
    symbol->setFrameStyle(QwtColumnSymbol::Raised);
    symbol->setPalette(QPalette(color));

    d_barChartItem->setSymbol(symbol);

    QVector<double> samples;

    QMap<QString, int>::const_iterator i = result.constBegin();
    while (i != result.constEnd()) {
        samples.append(i.value());
        ++i;
    }

    d_barChartItem->setSamples(samples);

    double k = (0.0 + SPACING_RATIO) / MARGIN_RATIO;

    double m = (0.0 + WINDOW_WIDTH - BAR_WIDTH) / (2 + k * (result.size() - 1));
    int margin = static_cast<int>(m);
    int spacing = static_cast<int>(m * k);

    if (spacing < MIN_SPACING) spacing = MIN_SPACING;
    if (margin < MIN_MARGIN) margin = MIN_MARGIN;

    d_barChartItem->setSpacing(spacing);
    d_barChartItem->setMargin(100);
    //d_barChartItem->setLayoutPolicy(QwtPlotAbstractBarChart::FixedSampleSize);
    //d_barChartItem->setLayoutHint(BAR_WIDTH);

}

void HistPlot::setValueHist(const vector<double>& histogram, int origin)
{
	setTitle("Histogram");
	setAxisTitle(QwtPlot::yLeft, "Count");
	setAxisTitle(QwtPlot::xBottom, "Value");

	QwtPlotGrid *grid = new QwtPlotGrid;
	grid->enableX(false);
	grid->enableY(true);
	grid->enableXMin(false);
	grid->enableYMin(false);
	grid->setMajPen(QPen(Qt::darkGreen, 0, Qt::SolidLine));
	grid->attach(this);

	Histogram *histogramJune = new Histogram("Summer", Qt::red);
	histogramJune->setValues(
		histogram.size(), &histogram[0], origin);
	histogramJune->attach(this);
}

PowerBarHistoryPlot::PowerBarHistoryPlot(double defaultTime, double defaultPowerLevel, QWidget* parent)
	: QWidget(parent)
	, m_overalTime(0.0)
	, m_lastSampleTime(0.0)
	, m_firstTime(true)
	, m_defaultTime(defaultTime)
	, m_defaultPowerLevel(defaultPowerLevel)
	, m_powerAxisMax(defaultPowerLevel)
	, m_powerAxisMin(-1*defaultPowerLevel)
	, m_timeAxisMax(defaultTime)
{
	m_plot = new QwtPlot();
	m_plot->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
	m_plot->setAxisScale(QwtPlot::xBottom, 0, defaultTime, defaultTime/20.0);
	m_plot->setAxisScale(QwtPlot::yLeft, -1 * defaultPowerLevel, defaultPowerLevel, defaultPowerLevel/2.0);
	m_plot->setAxisAutoScale(QwtPlot::xBottom, false);
	m_plot->setCanvasBackground(QBrush(Qt::white));
	m_plot->setAxisTitle(QwtPlot::xBottom, tr(TIME_AXIS_NAME));
	m_plot->setAxisTitle(QwtPlot::yLeft, tr(POWER_AXIS_NAME));
	
	// legend
	QwtLegend *legend = new QwtLegend;
	legend->setFrameStyle(QFrame::Box|QFrame::Sunken);
	m_plot->insertLegend(legend, QwtPlot::BottomLegend);

	QwtPlotGrid *grid = new QwtPlotGrid;
	grid->enableX(false);
	grid->enableYMin(true);
	grid->setMajPen(QPen(Qt::gray, 0, Qt::DotLine));
	grid->setMinPen(QPen(Qt::transparent, 0 , Qt::NoPen));
	grid->attach(m_plot);

	setupCurves();

	QHBoxLayout* historyPlotlayout = new QHBoxLayout;
	historyPlotlayout->addWidget(m_plot);
	historyPlotlayout->setSpacing(0);

	setColors(Qt::blue, Qt::red);

	setLayout(historyPlotlayout);
}

Spectrograph::Spectrograph(QWidget *parent):
    QwtPlot(parent)
{
    //real-time plotting
    d_directPainter = new QwtPlotDirectPainter();

    setAutoReplot( false );
    //all plot widgets will be displayed on the canvas
    setCanvas( new QwtPlotCanvas() );

    plotLayout()->setAlignCanvasToScales( true );
    //set plot title and range
    setAxisTitle( QwtPlot::xBottom, "Frequency (MHz)" );
    setAxisTitle( QwtPlot::yLeft, "Amplitude (dB)" );
    setAxisScale( QwtPlot::xBottom, 0, RESULT_LENGTH );
    setAxisScale( QwtPlot::yLeft, -90, -10);

    //black background
    setCanvasBackground(QColor(0,0,0));

    //add grid
    QwtPlotGrid *grid = new QwtPlotGrid();
    grid->setPen( Qt::white, 0.0, Qt::DotLine );
    grid->enableX( true );
    grid->enableXMin( true );
    grid->enableY( true );
    grid->enableYMin( false );
    grid->attach( this );//attach grid to plot

    //add curve
    d_curve = new QwtPlotCurve();
    d_curve->setStyle( QwtPlotCurve::Lines );
    d_curve->setPen(Qt::yellow);
    d_curve->setPaintAttribute( QwtPlotCurve::ClipPolygons, false );
    d_curve->attach( this );//attach curve to plot

    for(int i=0; i<RESULT_LENGTH; ++i) {
        d_x[i] = i;
    }

}