void TVPlot::setMode( int mode )
{
QwtPlotItemList items = itemList( QwtPlotItem::Rtti_PlotHistogram );
for ( int i = 0; i < items.size(); i++ )
{
QwtPlotHistogram *histogram = static_cast<QwtPlotHistogram *>( items[i] );
if ( mode < 3 )
{
histogram->setStyle( static_cast<QwtPlotHistogram::HistogramStyle>( mode ) );
histogram->setSymbol( NULL );
QPen pen( Qt::black, 0 );
if ( mode == QwtPlotHistogram::Lines )
pen.setBrush( histogram->brush() );
histogram->setPen( pen );
}
else
{
histogram->setStyle( QwtPlotHistogram::Columns );
QwtColumnSymbol *symbol = new QwtColumnSymbol( QwtColumnSymbol::Box );
symbol->setFrameStyle( QwtColumnSymbol::Raised );
symbol->setLineWidth( 2 );
symbol->setPalette( QPalette( histogram->brush().color() ) );
histogram->setSymbol( symbol );
}
}
}
QwtColumnSymbol * BarPlot::specialSymbol (int index, QPointF const &) const
{
QwtColumnSymbol * symbol = new QwtColumnSymbol(QwtColumnSymbol::Box);
symbol->setLineWidth(0);
symbol->setFrameStyle(QwtColumnSymbol::Plain);
QColor c(Qt::white);
if (index >= 0 && index < m_colors.size())
c = m_colors[index];
symbol->setPalette(c);
return symbol;
}
Histogram::Histogram(const QString &title, const QColor& symbolColor) :
QwtPlotHistogram(title)
{
setStyle(QwtPlotHistogram::Columns);
QColor color = symbolColor;
setBrush(QBrush(color));
setPen(QPen(color.darker()));
QwtColumnSymbol *symbol = new QwtColumnSymbol(QwtColumnSymbol::NoSymbol);
symbol->setPalette(QPalette(color));
setSymbol(symbol);
}
virtual QwtColumnSymbol *specialSymbol(
int index, const QPointF& ) const
{
QwtColumnSymbol *symbol = new QwtColumnSymbol( QwtColumnSymbol::Box );
symbol->setLineWidth( 2 );
symbol->setFrameStyle( QwtColumnSymbol::Raised );
QColor c( Qt::white );
if ( index >= 0 && index < m_colors.size() )
c = m_colors[ index ];
symbol->setPalette( c );
return symbol;
}
void Histogram::setColor(const QColor &symbolColor)
{
QColor color = symbolColor;
color.setAlpha(180);
setPen(QPen(Qt::black));
setBrush(QBrush(color));
QwtColumnSymbol *symbol = new QwtColumnSymbol(QwtColumnSymbol::NoStyle);
symbol->setFrameStyle(QwtColumnSymbol::NoFrame);
symbol->setLineWidth(0);
symbol->setPalette(QPalette(color));
setSymbol(symbol);
}
GraphicalHistogram::GraphicalHistogram(const QString& title, const QColor& color): QwtPlotHistogram(title)
{
setStyle(QwtPlotHistogram::Outline);
QColor c = color;
c.setAlpha(48);
setBrush(QBrush(c));
setPen(QPen(color));
QwtColumnSymbol* symbol = new QwtColumnSymbol(QwtColumnSymbol::Box);
symbol->setFrameStyle(QwtColumnSymbol::Raised);
symbol->setLineWidth(2);
symbol->setPalette(QPalette(color));
setSymbol(symbol);
}
virtual QwtColumnSymbol *specialSymbol(
int index, const QPointF& ) const
{
// we want to have individual colors for each bar
QwtColumnSymbol *symbol = new QwtColumnSymbol( QwtColumnSymbol::Box );
symbol->setLineWidth( 2 );
symbol->setFrameStyle( QwtColumnSymbol::Raised );
QColor c( Qt::white );
if ( index >= 0 && index < d_colors.size() )
c = d_colors[ index ];
symbol->setPalette( c );
return symbol;
}
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 BarChart::populate()
{
static const char *colors[] = { "DarkOrchid", "SteelBlue", "Gold" };
const int numSamples = 5;
const int numBars = sizeof( colors ) / sizeof( colors[0] );
QList<QwtText> titles;
for ( int i = 0; i < numBars; i++ )
{
QString title("Bar %1");
titles += title.arg( i );
}
d_barChartItem->setBarTitles( titles );
d_barChartItem->setLegendIconSize( QSize( 10, 14 ) );
for ( int i = 0; i < numBars; i++ )
{
QwtColumnSymbol *symbol = new QwtColumnSymbol( QwtColumnSymbol::Box );
symbol->setLineWidth( 2 );
symbol->setFrameStyle( QwtColumnSymbol::Raised );
symbol->setPalette( QPalette( colors[i] ) );
d_barChartItem->setSymbol( i, symbol );
}
QVector< QVector<double> > series;
for ( int i = 0; i < numSamples; i++ )
{
QVector<double> values;
for ( int j = 0; j < numBars; j++ )
values += ( 2 + qrand() % 8 );
series += values;
}
d_barChartItem->setSamples( series );
}
void TestResultPlotter::plot(const QStringList& labels, const QList<double>& confidence, const QList<double>& accuracy,
QwtPlot *plot, QwtBarsItem *barGraph, QwtLegend *barGraphLegend)
{
int count = labels.count();
Q_ASSERT(count == confidence.count());
Q_ASSERT(count == accuracy.count());
#if QWT_VERSION < 0x060100
double *accuracyA = new double[count];
double *confidenceA = new double[count];
for (int i=0; i < count; i++)
{
confidenceA[i] = confidence[i];
accuracyA[i] = accuracy[i];
}
QwtSeriesData<double> *accSeries = new CArrayData<double>( accuracyA, count );
barGraph->addSerie( i18n("Accuracy"), *accSeries, QBrush( Qt::blue ), QPen( QColor( Qt::darkBlue ), 1 ) );
QwtSeriesData<double> *confSeries = new CArrayData<double>( confidenceA, count );
barGraph->addSerie( i18n("Confidence"), *confSeries, QBrush( Qt::green ), QPen( QColor( Qt::darkGreen ), 1 ) );
barGraph->updateLegend(barGraphLegend);
barGraph->setType(QwtBarsItem::SideBySide);
#else
static const char *colors[] = { "Blue", "Red" };
const int numBars = 2; // accuracy, confidence
QList<QwtText> barTitles;
barTitles << i18n("Accuracy");
barTitles << i18n("Confidence");
barGraph->setBarTitles(barTitles);
barGraph->setLegendIconSize(QSize(10, 14));
for ( int i = 0; i < numBars; i++ )
{
QwtColumnSymbol *symbol = new QwtColumnSymbol(QwtColumnSymbol::Box);
symbol->setLineWidth(2);
symbol->setFrameStyle(QwtColumnSymbol::Raised);
symbol->setPalette(QPalette(colors[i]));
barGraph->setSymbol(i, symbol);
}
QVector<QVector<double> > series;
for (int i = 0; i < count; i++)
{
QVector<double> values;
values << accuracy[i];
values << confidence[i];
series << values;
}
barGraph->setSamples(series);
#endif
barGraph->attach(plot);
plot->setAxisScaleDraw(QwtPlot::xBottom, new QwtScaleDrawLabels( labels, 1 ));
// scale:
#if QWT_VERSION < 0x60100
plot->setAxisMaxMinor(QwtPlot::xBottom, 0);
plot->setAxisMaxMajor(QwtPlot::xBottom, count+1);
#else
QwtScaleDraw *scaleDraw1 = new QwtScaleDrawLabels( labels, 0 );
scaleDraw1->enableComponent(QwtScaleDraw::Labels, true);
scaleDraw1->enableComponent(QwtScaleDraw::Backbone, false);
scaleDraw1->enableComponent(QwtScaleDraw::Ticks, false);
plot->setAxisScaleDraw(QwtPlot::xBottom, scaleDraw1);
QwtScaleDraw *scaleDraw2 = plot->axisScaleDraw(QwtPlot::yLeft);
scaleDraw2->enableComponent(QwtScaleDraw::Backbone, true);
scaleDraw2->enableComponent(QwtScaleDraw::Labels, true);
scaleDraw2->enableComponent(QwtScaleDraw::Ticks, true);
plot->plotLayout()->setAlignCanvasToScale(QwtPlot::xBottom, true);
plot->plotLayout()->setAlignCanvasToScale(QwtPlot::yLeft, false);
#endif
plot->replot();
}
