更新代码

third/qcustomplotdemo/frmexample/frmadvancedaxes.cpp

@@ -15,17 +15,19 @@ frmAdvancedAxes::~frmAdvancedAxes()
 
 void frmAdvancedAxes::initForm()
 {
-#ifndef qcustomplot_v1_3
     // configure axis rect:
     ui->customPlot->plotLayout()->clear(); // clear default axis rect so we can start from scratch
+
     QCPAxisRect *wideAxisRect = new QCPAxisRect(ui->customPlot);
     wideAxisRect->setupFullAxesBox(true);
     wideAxisRect->axis(QCPAxis::atRight, 0)->setTickLabels(true);
     wideAxisRect->addAxis(QCPAxis::atLeft)->setTickLabelColor(QColor("#6050F8")); // add an extra axis on the left and color its numbers
+
     QCPLayoutGrid *subLayout = new QCPLayoutGrid;
     ui->customPlot->plotLayout()->addElement(0, 0, wideAxisRect); // insert axis rect in first row
     ui->customPlot->plotLayout()->addElement(1, 0, subLayout); // sub layout in second row (grid layout will grow accordingly)
     //ui->customPlot->plotLayout()->setRowStretchFactor(1, 2);
+
     // prepare axis rects that will be placed in the sublayout:
     QCPAxisRect *subRectLeft = new QCPAxisRect(ui->customPlot, false); // false means to not setup default axes
     QCPAxisRect *subRectRight = new QCPAxisRect(ui->customPlot, false);
@@ -33,6 +35,7 @@ void frmAdvancedAxes::initForm()
     subLayout->addElement(0, 1, subRectRight);
     subRectRight->setMaximumSize(100, 100); // make bottom right axis rect size fixed 100x100
     subRectRight->setMinimumSize(100, 100); // make bottom right axis rect size fixed 100x100
+
     // setup axes in sub layout axis rects:
     subRectLeft->addAxes(QCPAxis::atBottom | QCPAxis::atLeft);
     subRectRight->addAxes(QCPAxis::atBottom | QCPAxis::atRight);
@@ -40,11 +43,13 @@ void frmAdvancedAxes::initForm()
     subRectRight->axis(QCPAxis::atRight)->ticker()->setTickCount(2);
     subRectRight->axis(QCPAxis::atBottom)->ticker()->setTickCount(2);
     subRectLeft->axis(QCPAxis::atBottom)->grid()->setVisible(true);
+
     // synchronize the left and right margins of the top and bottom axis rects:
     QCPMarginGroup *marginGroup = new QCPMarginGroup(ui->customPlot);
     subRectLeft->setMarginGroup(QCP::msLeft, marginGroup);
     subRectRight->setMarginGroup(QCP::msRight, marginGroup);
     wideAxisRect->setMarginGroup(QCP::msLeft | QCP::msRight, marginGroup);
+
     // move newly created axes on "axes" layer and grids on "grid" layer:
     foreach (QCPAxisRect *rect, ui->customPlot->axisRects()) {
         foreach (QCPAxis *axis, rect->axes()) {
@@ -79,6 +84,7 @@ void frmAdvancedAxes::initForm()
     mainGraphCos->rescaleKeyAxis();
     mainGraphCos->setScatterStyle(QCPScatterStyle(QCPScatterStyle::ssCircle, QPen(Qt::black), QBrush(Qt::white), 6));
     mainGraphCos->setPen(QPen(QColor(120, 120, 120), 2));
+
     QCPGraph *mainGraphGauss = ui->customPlot->addGraph(wideAxisRect->axis(QCPAxis::atBottom), wideAxisRect->axis(QCPAxis::atLeft, 1));
     mainGraphGauss->data()->set(dataGauss);
     mainGraphGauss->setPen(QPen(QColor("#8070B8"), 2));
@@ -103,12 +109,11 @@ void frmAdvancedAxes::initForm()
     subBars->setBrush(QColor("#705BE8"));
     subBars->keyAxis()->setSubTicks(false);
     subBars->rescaleAxes();
+
     // setup a ticker for subBars key axis that only gives integer ticks:
     QSharedPointer<QCPAxisTickerFixed> intTicker(new QCPAxisTickerFixed);
     intTicker->setTickStep(1.0);
     intTicker->setScaleStrategy(QCPAxisTickerFixed::ssMultiples);
     subBars->keyAxis()->setTicker(intTicker);
-
     ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
-#endif
 }

third/qcustomplotdemo/frmexample/frmbarchart.cpp

@@ -15,7 +15,6 @@ frmBarChart::~frmBarChart()
 
 void frmBarChart::initForm()
 {
-#ifndef qcustomplot_v1_3
     // set dark background gradient:
     QLinearGradient gradient(0, 0, 0, 400);
     gradient.setColorAt(0, QColor(90, 90, 90));
@@ -27,12 +26,14 @@ void frmBarChart::initForm()
     QCPBars *regen = new QCPBars(ui->customPlot->xAxis, ui->customPlot->yAxis);
     QCPBars *nuclear = new QCPBars(ui->customPlot->xAxis, ui->customPlot->yAxis);
     QCPBars *fossil = new QCPBars(ui->customPlot->xAxis, ui->customPlot->yAxis);
+
     regen->setAntialiased(false); // gives more crisp, pixel aligned bar borders
     nuclear->setAntialiased(false);
     fossil->setAntialiased(false);
     regen->setStackingGap(1);
     nuclear->setStackingGap(1);
     fossil->setStackingGap(1);
+
     // set names and colors:
     fossil->setName("Fossil fuels");
     fossil->setPen(QPen(QColor(111, 9, 176).lighter(170)));
@@ -43,6 +44,7 @@ void frmBarChart::initForm()
     regen->setName("Regenerative");
     regen->setPen(QPen(QColor(0, 168, 140).lighter(130)));
     regen->setBrush(QColor(0, 168, 140));
+
     // stack bars on top of each other:
     nuclear->moveAbove(fossil);
     regen->moveAbove(nuclear);
@@ -52,6 +54,7 @@ void frmBarChart::initForm()
     QVector<QString> labels;
     ticks << 1 << 2 << 3 << 4 << 5 << 6 << 7;
     labels << "USA" << "Japan" << "Germany" << "France" << "UK" << "Italy" << "Canada";
+
     QSharedPointer<QCPAxisTickerText> textTicker(new QCPAxisTickerText);
     textTicker->addTicks(ticks, labels);
     ui->customPlot->xAxis->setTicker(textTicker);
@@ -97,5 +100,4 @@ void frmBarChart::initForm()
     legendFont.setPointSize(10);
     ui->customPlot->legend->setFont(legendFont);
     ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
-#endif
 }

third/qcustomplotdemo/frmexample/frmcolormap.cpp

@@ -27,6 +27,7 @@ void frmColorMap::initForm()
     int ny = 200;
     colorMap->data()->setSize(nx, ny); // we want the color map to have nx * ny data points
     colorMap->data()->setRange(QCPRange(-4, 4), QCPRange(-4, 4)); // and span the coordinate range -4..4 in both key (x) and value (y) dimensions
+
     // now we assign some data, by accessing the QCPColorMapData instance of the color map:
     double x, y, z;
     for (int xIndex = 0; xIndex < nx; ++xIndex) {

third/qcustomplotdemo/frmexample/frmdate.cpp

@@ -15,9 +15,9 @@ frmDate::~frmDate()
 
 void frmDate::initForm()
 {
-#ifndef qcustomplot_v1_3
     // set locale to english, so we get english month names:
     ui->customPlot->setLocale(QLocale(QLocale::English, QLocale::UnitedKingdom));
+
     // seconds of current time, we'll use it as starting point in time for data:
     double now = QDateTime::currentDateTime().toMSecsSinceEpoch() / 1000.0;
     srand(8); // set the random seed, so we always get the same random data
@@ -40,21 +40,26 @@ void frmDate::initForm()
         }
         ui->customPlot->graph()->data()->set(timeData);
     }
+
     // configure bottom axis to show date instead of number:
     QSharedPointer<QCPAxisTickerDateTime> dateTicker(new QCPAxisTickerDateTime);
     dateTicker->setDateTimeFormat("d. MMMM\nyyyy");
     ui->customPlot->xAxis->setTicker(dateTicker);
+
     // configure left axis text labels:
     QSharedPointer<QCPAxisTickerText> textTicker(new QCPAxisTickerText);
     textTicker->addTick(10, "a bit\nlow");
     textTicker->addTick(50, "quite\nhigh");
     ui->customPlot->yAxis->setTicker(textTicker);
+
     // set a more compact font size for bottom and left axis tick labels:
     ui->customPlot->xAxis->setTickLabelFont(QFont(QFont().family(), 8));
     ui->customPlot->yAxis->setTickLabelFont(QFont(QFont().family(), 8));
+
     // set axis labels:
     ui->customPlot->xAxis->setLabel("Date");
     ui->customPlot->yAxis->setLabel("Random wobbly lines value");
+
     // make top and right axes visible but without ticks and labels:
     ui->customPlot->xAxis2->setVisible(true);
     ui->customPlot->yAxis2->setVisible(true);
@@ -62,12 +67,13 @@ void frmDate::initForm()
     ui->customPlot->yAxis2->setTicks(false);
     ui->customPlot->xAxis2->setTickLabels(false);
     ui->customPlot->yAxis2->setTickLabels(false);
+
     // set axis ranges to show all data:
     ui->customPlot->xAxis->setRange(now, now + 24 * 3600 * 249);
     ui->customPlot->yAxis->setRange(0, 60);
+
     // show legend with slightly transparent background brush:
     ui->customPlot->legend->setVisible(true);
     ui->customPlot->legend->setBrush(QColor(255, 255, 255, 150));
     ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
-#endif
 }

third/qcustomplotdemo/frmexample/frmfinancial.cpp

@@ -60,10 +60,12 @@ void frmFinancial::initForm()
     volumeAxisRect->setMaximumSize(QSize(QWIDGETSIZE_MAX, 100));
     volumeAxisRect->axis(QCPAxis::atBottom)->setLayer("axes");
     volumeAxisRect->axis(QCPAxis::atBottom)->grid()->setLayer("grid");
+
     // bring bottom and main axis rect closer together:
     ui->customPlot->plotLayout()->setRowSpacing(0);
     volumeAxisRect->setAutoMargins(QCP::msLeft | QCP::msRight | QCP::msBottom);
     volumeAxisRect->setMargins(QMargins(0, 0, 0, 0));
+
     // create two bar plottables, for positive (green) and negative (red) volume bars:
     ui->customPlot->setAutoAddPlottableToLegend(false);
     QCPBars *volumePos = new QCPBars(volumeAxisRect->axis(QCPAxis::atBottom), volumeAxisRect->axis(QCPAxis::atLeft));
@@ -72,6 +74,7 @@ void frmFinancial::initForm()
         int v = std::rand() % 20000 + std::rand() % 20000 + std::rand() % 20000 - 10000 * 3;
         (v < 0 ? volumeNeg : volumePos)->addData(startTime + 3600 * 5.0 * i, qAbs(v)); // add data to either volumeNeg or volumePos, depending on sign of v
     }
+
     volumePos->setWidth(3600 * 4);
     volumePos->setPen(Qt::NoPen);
     volumePos->setBrush(QColor(100, 180, 110));
@@ -82,6 +85,7 @@ void frmFinancial::initForm()
     // interconnect x axis ranges of main and bottom axis rects:
     connect(ui->customPlot->xAxis, SIGNAL(rangeChanged(QCPRange)), volumeAxisRect->axis(QCPAxis::atBottom), SLOT(setRange(QCPRange)));
     connect(volumeAxisRect->axis(QCPAxis::atBottom), SIGNAL(rangeChanged(QCPRange)), ui->customPlot->xAxis, SLOT(setRange(QCPRange)));
+
     // configure axes of both main and bottom axis rect:
     QSharedPointer<QCPAxisTickerDateTime> dateTimeTicker(new QCPAxisTickerDateTime);
     dateTimeTicker->setDateTimeSpec(Qt::UTC);
@@ -100,6 +104,5 @@ void frmFinancial::initForm()
     QCPMarginGroup *group = new QCPMarginGroup(ui->customPlot);
     ui->customPlot->axisRect()->setMarginGroup(QCP::msLeft | QCP::msRight, group);
     volumeAxisRect->setMarginGroup(QCP::msLeft | QCP::msRight, group);
-
     ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
 }

third/qcustomplotdemo/frmexample/frmitem.cpp

@@ -15,7 +15,7 @@ frmItem::~frmItem()
 
 void frmItem::showEvent(QShowEvent *)
 {
-    dataTimer.start(0); // Interval 0 means to refresh as fast as possible
+    dataTimer.start(0);
 }
 
 void frmItem::hideEvent(QHideEvent *)
@@ -35,6 +35,7 @@ void frmItem::initForm()
         x[i] = i / (double)(n - 1) * 34 - 17;
         y[i] = qExp(-x[i] * x[i] / 20.0) * qSin(k * x[i] + phase);
     }
+
     graph->setData(x, y);
     graph->setPen(QPen(Qt::blue));
     graph->rescaleKeyAxis();
@@ -150,10 +151,9 @@ void frmItem::bracketDataSlot()
         x[i] = i / (double)(n - 1) * 34 - 17;
         y[i] = qExp(-x[i] * x[i] / 20.0) * qSin(k * x[i] + phase);
     }
+
     ui->customPlot->graph()->setData(x, y);
-
     phaseTracer->setGraphKey((8 * M_PI + fmod(M_PI * 1.5 - phase, 6 * M_PI)) / k);
-
     ui->customPlot->replot();
 
     // calculate frames per second:

third/qcustomplotdemo/frmexample/frmlinestyle.cpp

@@ -17,9 +17,11 @@ void frmLineStyle::initForm()
 {
     ui->customPlot->legend->setVisible(true);
     ui->customPlot->legend->setFont(QFont("Helvetica", 9));
+
     QPen pen;
     QStringList lineNames;
     lineNames << "lsNone" << "lsLine" << "lsStepLeft" << "lsStepRight" << "lsStepCenter" << "lsImpulse";
+
     // add graphs with different line styles:
     for (int i = QCPGraph::lsNone; i <= QCPGraph::lsImpulse; ++i) {
         ui->customPlot->addGraph();
@@ -28,23 +30,28 @@ void frmLineStyle::initForm()
         ui->customPlot->graph()->setName(lineNames.at(i - QCPGraph::lsNone));
         ui->customPlot->graph()->setLineStyle((QCPGraph::LineStyle)i);
         ui->customPlot->graph()->setScatterStyle(QCPScatterStyle(QCPScatterStyle::ssCircle, 5));
+
         // generate data:
         QVector<double> x(15), y(15);
         for (int j = 0; j < 15; ++j) {
             x[j] = j / 15.0 * 5 * 3.14 + 0.01;
             y[j] = 7 * qSin(x[j]) / x[j] - (i - QCPGraph::lsNone) * 5 + (QCPGraph::lsImpulse) * 5 + 2;
         }
+
         ui->customPlot->graph()->setData(x, y);
         ui->customPlot->graph()->rescaleAxes(true);
     }
+
     // zoom out a bit:
     ui->customPlot->yAxis->scaleRange(1.1, ui->customPlot->yAxis->range().center());
     ui->customPlot->xAxis->scaleRange(1.1, ui->customPlot->xAxis->range().center());
+
     // set blank axis lines:
     ui->customPlot->xAxis->setTicks(false);
     ui->customPlot->yAxis->setTicks(true);
     ui->customPlot->xAxis->setTickLabels(false);
     ui->customPlot->yAxis->setTickLabels(true);
+
     // make top right axes clones of bottom left axes:
     ui->customPlot->axisRect()->setupFullAxesBox();
     ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);

third/qcustomplotdemo/frmexample/frmlogarithmic.cpp

@@ -17,6 +17,7 @@ void frmLogarithmic::initForm()
 {
     ui->customPlot->setNoAntialiasingOnDrag(true); // more performance/responsiveness during dragging
     ui->customPlot->addGraph();
+
     QPen pen;
     pen.setColor(QColor(255, 170, 100));
     pen.setWidth(2);
@@ -54,6 +55,7 @@ void frmLogarithmic::initForm()
         dataPlusSinExp[i].key = i / 10.0;
         dataPlusSinExp[i].value = qSin(dataPlusSinExp[i].key) * qExp(dataPlusSinExp[i].key);
     }
+
     for (int i = 0; i < dataFactorialCount; ++i) {
         dataFactorial[i].key = i;
         dataFactorial[i].value = 1.0;
@@ -61,6 +63,7 @@ void frmLogarithmic::initForm()
             dataFactorial[i].value *= k;    // factorial
         }
     }
+
     ui->customPlot->graph(0)->data()->set(dataLinear);
     ui->customPlot->graph(1)->data()->set(dataMinusSinExp);
     ui->customPlot->graph(2)->data()->set(dataPlusSinExp);
@@ -70,6 +73,7 @@ void frmLogarithmic::initForm()
     ui->customPlot->xAxis->grid()->setSubGridVisible(true);
     ui->customPlot->yAxis->setScaleType(QCPAxis::stLogarithmic);
     ui->customPlot->yAxis2->setScaleType(QCPAxis::stLogarithmic);
+
     QSharedPointer<QCPAxisTickerLog> logTicker(new QCPAxisTickerLog);
     ui->customPlot->yAxis->setTicker(logTicker);
     ui->customPlot->yAxis2->setTicker(logTicker);
@@ -87,7 +91,5 @@ void frmLogarithmic::initForm()
     ui->customPlot->legend->setVisible(true);
     ui->customPlot->legend->setBrush(QBrush(QColor(255, 255, 255, 150)));
     ui->customPlot->axisRect()->insetLayout()->setInsetAlignment(0, Qt::AlignLeft | Qt::AlignTop); // make legend align in top left corner or axis rect
-
-    // make range draggable and zoomable:
     ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
 }

third/qcustomplotdemo/frmexample/frmmultiaxis.cpp

@@ -41,6 +41,7 @@ void frmMultiAxis::initForm()
     ui->customPlot->graph(1)->setLineStyle(QCPGraph::lsStepCenter);
     ui->customPlot->graph(1)->setScatterStyle(QCPScatterStyle(QCPScatterStyle::ssCircle, Qt::red, Qt::white, 7));
     ui->customPlot->graph(1)->setName("Bottom maxwell function");
+
     QCPErrorBars *errorBars = new QCPErrorBars(ui->customPlot->xAxis, ui->customPlot->yAxis);
     errorBars->removeFromLegend();
     errorBars->setDataPlottable(ui->customPlot->graph(1));
@@ -75,15 +76,18 @@ void frmMultiAxis::initForm()
     QVector<double> x2(250), y2(250);
     QVector<double> x3(250), y3(250);
     QVector<double> x4(250), y4(250);
+
     for (int i = 0; i < 25; ++i) { // data for graph 0
         x0[i] = 3 * i / 25.0;
         y0[i] = qExp(-x0[i] * x0[i] * 0.8) * (x0[i] * x0[i] + x0[i]);
     }
+
     for (int i = 0; i < 15; ++i) { // data for graph 1
         x1[i] = 3 * i / 15.0;;
         y1[i] = qExp(-x1[i] * x1[i]) * (x1[i] * x1[i]) * 2.6;
         y1err[i] = y1[i] * 0.25;
     }
+
     for (int i = 0; i < 250; ++i) { // data for graphs 2, 3 and 4
         x2[i] = i / 250.0 * 3 * M_PI;
         x3[i] = x2[i];
@@ -100,19 +104,23 @@ void frmMultiAxis::initForm()
     ui->customPlot->graph(2)->setData(x2, y2);
     ui->customPlot->graph(3)->setData(x3, y3);
     ui->customPlot->graph(4)->setData(x4, y4);
+
     // activate top and right axes, which are invisible by default:
     ui->customPlot->xAxis2->setVisible(true);
     ui->customPlot->yAxis2->setVisible(true);
+
     // set ranges appropriate to show data:
     ui->customPlot->xAxis->setRange(0, 2.7);
     ui->customPlot->yAxis->setRange(0, 2.6);
     ui->customPlot->xAxis2->setRange(0, 3.0 * M_PI);
     ui->customPlot->yAxis2->setRange(-70, 35);
+
     // set pi ticks on top axis:
     ui->customPlot->xAxis2->setTicker(QSharedPointer<QCPAxisTickerPi>(new QCPAxisTickerPi));
     // add title layout element:
     ui->customPlot->plotLayout()->insertRow(0);
     ui->customPlot->plotLayout()->addElement(0, 0, new QCPTextElement(ui->customPlot, "Way too many graphs in one plot", QFont("sans", 12, QFont::Bold)));
+
     // set labels:
     ui->customPlot->xAxis->setLabel("Bottom axis with outward ticks");
     ui->customPlot->yAxis->setLabel("Left axis label");

third/qcustomplotdemo/frmexample/frmparametriccurve.cpp

@@ -19,6 +19,7 @@ void frmParametricCurve::initForm()
     QCPCurve *fermatSpiral1 = new QCPCurve(ui->customPlot->xAxis, ui->customPlot->yAxis);
     QCPCurve *fermatSpiral2 = new QCPCurve(ui->customPlot->xAxis, ui->customPlot->yAxis);
     QCPCurve *deltoidRadial = new QCPCurve(ui->customPlot->xAxis, ui->customPlot->yAxis);
+
     // generate the curve data points:
     const int pointCount = 500;
     QVector<QCPCurveData> dataSpiral1(pointCount), dataSpiral2(pointCount), dataDeltoid(pointCount);
@@ -29,21 +30,25 @@ void frmParametricCurve::initForm()
         dataSpiral2[i] = QCPCurveData(i, -dataSpiral1[i].key, -dataSpiral1[i].value);
         dataDeltoid[i] = QCPCurveData(i, 2 * qCos(2 * theta) + qCos(1 * theta) + 2 * qSin(theta), 2 * qSin(2 * theta) - qSin(1 * theta));
     }
+
     // pass the data to the curves; we know t (i in loop above) is ascending, so set alreadySorted=true (saves an extra internal sort):
     fermatSpiral1->data()->set(dataSpiral1, true);
     fermatSpiral2->data()->set(dataSpiral2, true);
     deltoidRadial->data()->set(dataDeltoid, true);
+
     // color the curves:
     fermatSpiral1->setPen(QPen(Qt::blue));
     fermatSpiral1->setBrush(QBrush(QColor(0, 0, 255, 20)));
     fermatSpiral2->setPen(QPen(QColor(255, 120, 0)));
     fermatSpiral2->setBrush(QBrush(QColor(255, 120, 0, 30)));
+
     QRadialGradient radialGrad(QPointF(310, 180), 200);
     radialGrad.setColorAt(0, QColor(170, 20, 240, 100));
     radialGrad.setColorAt(0.5, QColor(20, 10, 255, 40));
     radialGrad.setColorAt(1, QColor(120, 20, 240, 10));
     deltoidRadial->setPen(QPen(QColor(170, 20, 240)));
     deltoidRadial->setBrush(QBrush(radialGrad));
+
     // set some basic ui->customPlot config:
     ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectPlottables);
     ui->customPlot->axisRect()->setupFullAxesBox();

third/qcustomplotdemo/frmexample/frmpolarplot.cpp

@@ -28,6 +28,7 @@ void frmPolarPlot::initForm()
     ticker->setTickCount(8);
     polarAxis->setTicker(ticker);
     */
+
     ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
     angularAxis->setRangeDrag(false);
     angularAxis->setTickLabelMode(QCPPolarAxisAngular::lmUpright);

third/qcustomplotdemo/frmexample/frmquadratic.cpp

@@ -21,6 +21,7 @@ void frmQuadratic::initForm()
         x[i] = i / 50.0 - 1; // x goes from -1 to 1
         y[i] = x[i] * x[i]; // let's plot a quadratic function
     }
+
     // create graph and assign data to it:
     ui->customPlot->addGraph();
     ui->customPlot->graph(0)->setData(x, y);

third/qcustomplotdemo/frmexample/frmrealtimedata.cpp

@@ -16,7 +16,7 @@ frmRealtimeData::~frmRealtimeData()
 void frmRealtimeData::showEvent(QShowEvent *)
 {
     timeStart = QTime::currentTime();
-    dataTimer.start(0); // Interval 0 means to refresh as fast as possible
+    dataTimer.start(0);
 }
 
 void frmRealtimeData::hideEvent(QHideEvent *)
@@ -35,6 +35,7 @@ void frmRealtimeData::initForm()
     ui->customPlot->yAxis->setTickLabelFont(font);
     ui->customPlot->legend->setFont(font);
     */
+
     ui->customPlot->addGraph(); // blue line
     ui->customPlot->graph(0)->setPen(QPen(QColor(40, 110, 255)));
     ui->customPlot->addGraph(); // red line
@@ -51,7 +52,7 @@ void frmRealtimeData::initForm()
     connect(ui->customPlot->yAxis, SIGNAL(rangeChanged(QCPRange)), ui->customPlot->yAxis2, SLOT(setRange(QCPRange)));
 
     // setup a timer that repeatedly calls MainWindow::realtimeDataSlot:
-    connect(&dataTimer, SIGNAL(timeout()), this, SLOT(realtimeDataSlot()));    
+    connect(&dataTimer, SIGNAL(timeout()), this, SLOT(realtimeDataSlot()));
 }
 
 void frmRealtimeData::realtimeDataSlot()
@@ -68,6 +69,7 @@ void frmRealtimeData::realtimeDataSlot()
         //ui->customPlot->graph(1)->rescaleValueAxis(true);
         lastPointKey = key;
     }
+
     // make key axis range scroll with the data (at a constant range size of 8):
     ui->customPlot->xAxis->setRange(key, 8, Qt::AlignRight);
     ui->customPlot->replot();

third/qcustomplotdemo/frmexample/frmscatterpixmap.cpp

@@ -18,6 +18,7 @@ void frmScatterPixmap::initForm()
     ui->customPlot->axisRect()->setBackground(QPixmap(":/image/bg1.jpg"));
     ui->customPlot->addGraph();
     ui->customPlot->graph()->setLineStyle(QCPGraph::lsLine);
+
     QPen pen;
     pen.setColor(QColor(255, 200, 20, 200));
     pen.setStyle(Qt::DashLine);
@@ -27,6 +28,7 @@ void frmScatterPixmap::initForm()
     ui->customPlot->graph()->setScatterStyle(QCPScatterStyle(QPixmap(":/image/data.png")));
     // set graph name, will show up in legend next to icon:
     ui->customPlot->graph()->setName("Data from Photovoltaic\nenergy barometer 2011");
+
     // set data:
     QVector<double> year, value;
     year  << 2005 << 2006 << 2007 << 2008  << 2009  << 2010 << 2011;
@@ -49,6 +51,7 @@ void frmScatterPixmap::initForm()
     ui->customPlot->yAxis2->setSubTicks(false);
     ui->customPlot->xAxis->setRange(2004.5, 2011.5);
     ui->customPlot->yAxis->setRange(0, 52);
+
     // setup legend:
     ui->customPlot->legend->setFont(QFont(font().family(), 7));
     ui->customPlot->legend->setIconSize(50, 20);

third/qcustomplotdemo/frmexample/frmscatterstyle.cpp

@@ -70,6 +70,7 @@ void frmScatterStyle::initForm()
             ui->customPlot->graph()->setScatterStyle(QCPScatterStyle(customScatterPath, QPen(Qt::black, 0), QColor(40, 70, 255, 50), 10));
         }
     }
+
     // set blank axis lines:
     ui->customPlot->rescaleAxes();
     ui->customPlot->xAxis->setTicks(false);

third/qcustomplotdemo/frmexample/frmsimple.cpp

@@ -21,6 +21,7 @@ void frmSimple::initForm()
     ui->customPlot->graph(0)->setBrush(QBrush(QColor(0, 0, 255, 20))); // first graph will be filled with translucent blue
     ui->customPlot->addGraph();
     ui->customPlot->graph(1)->setPen(QPen(Qt::red)); // line color red for second graph
+
     // generate some points of data (y0 for first, y1 for second graph):
     QVector<double> x(251), y0(251), y1(251);
     for (int i = 0; i < 251; ++i) {
@@ -28,15 +29,18 @@ void frmSimple::initForm()
         y0[i] = qExp(-i / 150.0) * qCos(i / 10.0); // exponentially decaying cosine
         y1[i] = qExp(-i / 150.0);            // exponential envelope
     }
+
     // configure right and top axis to show ticks but no labels:
     // (see QCPAxisRect::setupFullAxesBox for a quicker method to do this)
     ui->customPlot->xAxis2->setVisible(true);
     ui->customPlot->xAxis2->setTickLabels(false);
     ui->customPlot->yAxis2->setVisible(true);
     ui->customPlot->yAxis2->setTickLabels(false);
+
     // make left and bottom axes always transfer their ranges to right and top axes:
     connect(ui->customPlot->xAxis, SIGNAL(rangeChanged(QCPRange)), ui->customPlot->xAxis2, SLOT(setRange(QCPRange)));
     connect(ui->customPlot->yAxis, SIGNAL(rangeChanged(QCPRange)), ui->customPlot->yAxis2, SLOT(setRange(QCPRange)));
+
     // pass data points to graphs:
     ui->customPlot->graph(0)->setData(x, y0);
     ui->customPlot->graph(1)->setData(x, y1);

third/qcustomplotdemo/frmexample/frmsincscatter.cpp

@@ -21,6 +21,7 @@ void frmSincScatter::initForm()
     ui->customPlot->setLocale(QLocale(QLocale::English, QLocale::UnitedKingdom));
     // add confidence band graphs:
     ui->customPlot->addGraph();
+
     QPen pen;
     pen.setStyle(Qt::DotLine);
     pen.setWidth(1);
@@ -32,6 +33,7 @@ void frmSincScatter::initForm()
     ui->customPlot->legend->removeItem(ui->customPlot->legend->itemCount() - 1); // don't show two confidence band graphs in legend
     ui->customPlot->graph(1)->setPen(pen);
     ui->customPlot->graph(0)->setChannelFillGraph(ui->customPlot->graph(1));
+
     // add theory curve graph:
     ui->customPlot->addGraph();
     pen.setStyle(Qt::DashLine);
@@ -39,12 +41,14 @@ void frmSincScatter::initForm()
     pen.setColor(Qt::red);
     ui->customPlot->graph(2)->setPen(pen);
     ui->customPlot->graph(2)->setName("Theory Curve");
+
     // add data point graph:
     ui->customPlot->addGraph();
     ui->customPlot->graph(3)->setPen(QPen(Qt::blue));
     ui->customPlot->graph(3)->setName("Measurement");
     ui->customPlot->graph(3)->setLineStyle(QCPGraph::lsNone);
     ui->customPlot->graph(3)->setScatterStyle(QCPScatterStyle(QCPScatterStyle::ssCross, 4));
+
     // add error bars:
     QCPErrorBars *errorBars = new QCPErrorBars(ui->customPlot->xAxis, ui->customPlot->yAxis);
     errorBars->removeFromLegend();
@@ -62,6 +66,7 @@ void frmSincScatter::initForm()
         yConfLower[i] = y0[i] - 0.15;
         x0[i] *= 1000;
     }
+
     QVector<double> x1(50), y1(50), y1err(50);
     for (int i = 0; i < 50; ++i) {
         // generate a gaussian distributed random number:
@@ -74,6 +79,7 @@ void frmSincScatter::initForm()
         x1[i] *= 1000;
         y1err[i] = 0.15;
     }
+
     // pass data to graphs and let Qui->customPlot determine the axes ranges so the whole thing is visible:
     ui->customPlot->graph(0)->setData(x0, yConfUpper);
     ui->customPlot->graph(1)->setData(x0, yConfLower);
@@ -82,12 +88,14 @@ void frmSincScatter::initForm()
     errorBars->setData(y1err);
     ui->customPlot->graph(2)->rescaleAxes();
     ui->customPlot->graph(3)->rescaleAxes(true);
+
     // setup look of bottom tick labels:
     ui->customPlot->xAxis->setTickLabelRotation(30);
     ui->customPlot->xAxis->ticker()->setTickCount(9);
     ui->customPlot->xAxis->setNumberFormat("ebc");
     ui->customPlot->xAxis->setNumberPrecision(1);
     ui->customPlot->xAxis->moveRange(-10);
+
     // make top right axes clones of bottom left axes. Looks prettier:
     ui->customPlot->axisRect()->setupFullAxesBox();
     ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);

third/qcustomplotdemo/frmexample/frmstyled.cpp

@@ -20,18 +20,22 @@ void frmStyled::initForm()
     QVector<double> x2(100), y2(100);
     QVector<double> x3(20), y3(20);
     QVector<double> x4(20), y4(20);
+
     for (int i = 0; i < x1.size(); ++i) {
         x1[i] = i / (double)(x1.size() - 1) * 10;
         y1[i] = qCos(x1[i] * 0.8 + qSin(x1[i] * 0.16 + 1.0)) * qSin(x1[i] * 0.54) + 1.4;
     }
+
     for (int i = 0; i < x2.size(); ++i) {
         x2[i] = i / (double)(x2.size() - 1) * 10;
         y2[i] = qCos(x2[i] * 0.85 + qSin(x2[i] * 0.165 + 1.1)) * qSin(x2[i] * 0.50) + 1.7;
     }
+
     for (int i = 0; i < x3.size(); ++i) {
         x3[i] = i / (double)(x3.size() - 1) * 10;
         y3[i] = 0.05 + 3 * (0.5 + qCos(x3[i] * x3[i] * 0.2 + 2) * 0.5) / (double)(x3[i] + 0.7) + std::rand() / (double)RAND_MAX * 0.01;
     }
+
     for (int i = 0; i < x4.size(); ++i) {
         x4[i] = x3[i];
         y4[i] = (0.5 - y3[i]) + ((x4[i] - 2) * (x4[i] - 2) * 0.02);