void GraphWidget::drawChart()
{
XYChart *c = new XYChart(size.width(), size.height() - 100, Chart::Transparent);
c->setPlotArea(10, 50, c->getWidth() - 65, c->getHeight() - 10, 0x000000, -1, 0xC8C8C8, Chart::Transparent, Chart::Transparent);
c->setClipping();
c->getLegend()->setLineStyleKey();
c->getLegend()->setFontSize(10);
//遍历查询结果并绘制结果
int ea_result_count = ea_results.size();
//设置X轴的label
for(int i = 0;i < ea_result_count;i++){
ExchangeRateResult *ea_result = ea_results[i];
DoubleArray x_data = getXData(i);
DoubleArray y_data = ea_result->getYData();
double viewPortStartDate = m_ChartViewer->getValueAtViewPort("x", m_ChartViewer->getViewPortLeft());
double viewPortEndDate = m_ChartViewer->getValueAtViewPort("x", m_ChartViewer->getViewPortLeft() +
m_ChartViewer->getViewPortWidth());
int startIndex = (int)floor(Chart::bSearch(x_data, viewPortStartDate));
int endIndex = (int)ceil(Chart::bSearch(x_data, viewPortEndDate));
int noOfPoints = endIndex - startIndex + 1;
DoubleArray viewPortXData = DoubleArray(x_data.data + startIndex, noOfPoints);
DoubleArray viewPortYData = DoubleArray(y_data.data + startIndex, noOfPoints);
//添加图层
LineLayer *layer = c->addLineLayer();
layer->setLineWidth(1);
//设置X轴
layer->setXData(viewPortXData);
//设置Y轴
layer->addDataSet(viewPortYData, ea_result->getColor(), ea_result->getName().toUtf8().data())->setUseYAxis2();
}
c->xAxis()->setLabelStyle("arial.ttf", 10);
c->yAxis2()->setLabelStyle("arial.ttf", 10);
c->xAxis()->setColors(0xC8C8C8, 0xC8C8C8);
c->yAxis2()->setColors(0xC8C8C8, 0xC8C8C8);
m_ChartViewer->syncDateAxisWithViewPort("x", c->xAxis());
c->yAxis()->setTickDensity(30);
c->yAxis2()->setTickDensity(30);
if (!m_ChartViewer->isInMouseMoveEvent())
{
trackLineLegend(c, (0 == m_ChartViewer->getChart()) ? c->getPlotArea()->getRightX() :
m_ChartViewer->getPlotAreaMouseX());
}
delete m_ChartViewer->getChart();
m_ChartViewer->setChart(c);
}
//
// Draw the chart and display it in the given viewer
//
void TrackAxis::drawChart(QChartViewer *viewer)
{
// Data for the chart as 2 random data series
RanSeries r(127);
DoubleArray data0 = r.getSeries(180, 10, -1.5, 1.5);
DoubleArray data1 = r.getSeries(180, 150, -15, 15);
DoubleArray timeStamps = r.getDateSeries(180, Chart::chartTime(2011, 1, 1), 86400);
// Create a XYChart object of size 670 x 400 pixels
XYChart *c = new XYChart(670, 400);
// Add a title to the chart using 18 pts Times New Roman Bold Italic font
c->addTitle("Plasma Stabilizer Energy Usage", "timesbi.ttf", 18);
// Set the plotarea at (50, 55) with width 100 pixels less than chart width, and height 90 pixels
// less than chart height. Use a vertical gradient from light blue (f0f6ff) to sky blue (a0c0ff)
// as background. Set border to transparent and grid lines to white (ffffff).
c->setPlotArea(50, 55, c->getWidth() - 100, c->getHeight() - 90, c->linearGradientColor(0, 55, 0,
c->getHeight() - 35, 0xf0f6ff, 0xa0c0ff), -1, Chart::Transparent, 0xffffff, 0xffffff);
// Add a legend box at (50, 25) using horizontal layout. Use 10pts Arial Bold as font. Set the
// background and border color to Transparent.
c->addLegend(50, 25, false, "arialbd.ttf", 10)->setBackground(Chart::Transparent);
// Set axis label style to 8pts Arial Bold
c->xAxis()->setLabelStyle("arialbd.ttf", 8);
c->yAxis()->setLabelStyle("arialbd.ttf", 8);
c->yAxis2()->setLabelStyle("arialbd.ttf", 8);
// Set the axis stem to transparent
c->xAxis()->setColors(Chart::Transparent);
c->yAxis()->setColors(Chart::Transparent);
c->yAxis2()->setColors(Chart::Transparent);
// Configure x-axis label format
c->xAxis()->setMultiFormat(Chart::StartOfYearFilter(), "{value|mm/yyyy} ",
Chart::StartOfMonthFilter(), "{value|mm}");
// Add axis title using 10pts Arial Bold Italic font
c->yAxis()->setTitle("Power Usage (Watt)", "arialbi.ttf", 10);
c->yAxis2()->setTitle("Effective Load (kg)", "arialbi.ttf", 10);
// Add a line layer to the chart using a line width of 2 pixels.
LineLayer *layer = c->addLineLayer();
layer->setLineWidth(2);
// Add 2 data series to the line layer
layer->setXData(timeStamps);
layer->addDataSet(data0, 0xcc0000, "Power Usage");
layer->addDataSet(data1, 0x008800, "Effective Load")->setUseYAxis2();
// Set the chart image to the QChartViewer
viewer->setChart(c);
}
void GraphWidget::drawFullChart(){
nameList.clear();
initChartViewer();
XYChart *c = new XYChart(size.width(), 100, Chart::Transparent);
c->setPlotArea(10, 5, c->getWidth() - 65, c->getHeight() - 15, 0x000000, -1, 0xC8C8C8,
Chart::Transparent, 0xffffff);
c->xAxis()->setColors(Chart::Transparent);
c->xAxis()->setLabelStyle("arial.ttf", 10);
c->xAxis()->setLabelGap(-1);
c->xAxis()->setLabelAlignment(1);
c->yAxis()->setColors(Chart::Transparent, Chart::Transparent);
//遍历查询结果并绘制结果
int ea_result_count = ea_results.size();
//设置X轴的label
for(int i = 0;i < ea_result_count;i++){
ExchangeRateResult *ea_result = ea_results[i];
DoubleArray y_data = ea_result->getYData();
//添加图层
LineLayer *layer = c->addLineLayer();
layer->setFastLineMode();
layer->setLineWidth(1);
//设置X轴
layer->setXData(getXData(i));
//设置Y轴
layer->addDataSet(y_data, ea_result->getColor(), ea_result->getName().toUtf8().data());
}
c->xAxis()->setDateScale(m_ChartViewer->getValueAtViewPort("x", 0), m_ChartViewer->getValueAtViewPort("x", 1));
// c->xAxis()->setTickDensity(75);
c->yAxis()->setRounding(false, false);
delete m_ViewPortControl->getChart();
m_ViewPortControl->setChart(c);
drawChart();
}
int main(int argc, char *argv[])
{
// The data for the chart
double dataY[] = {1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1};
double dataX[] = {Chart::chartTime(2008, 7, 1, 0, 0, 0), Chart::chartTime(2008, 7, 1, 2, 17, 2),
Chart::chartTime(2008, 7, 1, 8, 5, 30), Chart::chartTime(2008, 7, 1, 10, 54, 10),
Chart::chartTime(2008, 7, 1, 15, 40, 0), Chart::chartTime(2008, 7, 1, 18, 22, 20),
Chart::chartTime(2008, 7, 1, 22, 17, 14), Chart::chartTime(2008, 7, 2, 2, 55, 50),
Chart::chartTime(2008, 7, 2, 8, 17, 14), Chart::chartTime(2008, 7, 2, 11, 55, 50),
Chart::chartTime(2008, 7, 2, 13, 17, 14), Chart::chartTime(2008, 7, 2, 17, 55, 50),
Chart::chartTime(2008, 7, 2, 20, 17, 14), Chart::chartTime(2008, 7, 3, 0, 0, 0)};
// In this example, we only use position 1, 3, 5 for the data series. Positions 0, 2, 4, 6 are
// empty and serve as gaps.
const char *labels[] = {"", "ON Only Filling", "",
"<*font,color=cc2200*>ON<*/font*> / <*font,color=00aa22*>OFF<*/font*> Filling", "",
"Logic Line", ""};
// Create a XYChart object of size 600 x 180 pixels
XYChart *c = new XYChart(600, 180);
// Add a title to the chart using 10 points Arial Bold font. Set top/bottom margins to 12
// pixels.
TextBox *title = c->addTitle("Binary Data Series Demonstration", "arialbd.ttf", 10);
// Tentatively set the plotarea at (100, 30) and of size 470 x 120 pixels. Use transparent
// border. Use grey (888888) solid line and light grey (ccccc) dotted line as major and minor
// vertical grid lines.
c->setPlotArea(100, 30, 470, 120, -1, -1, Chart::Transparent)->setGridColor(Chart::Transparent,
0x888888, Chart::Transparent, c->dashLineColor(0xcccccc, Chart::DotLine));
// Set axes to transparent
c->xAxis()->setColors(Chart::Transparent);
c->yAxis()->setColors(Chart::Transparent);
// Set the y axis labels
c->yAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0]))));
// Set y-axis label style to 8pt Arial Bold
c->yAxis()->setLabelStyle("arialbd.ttf", 8);
// Set x-axis major and minor tick density to 50 and 5 pixels. ChartDirector auto-scaling will
// use this as the guideline when putting ticks on the x-axis.
c->xAxis()->setTickDensity(50, 5);
// Use "<*font=Arial Bold*>{value|mmm dd}" for the first label of an hour, and "{value|hh:nn}"
// for all other labels.
c->xAxis()->setMultiFormat(Chart::StartOfDayFilter(), "<*font=arialbd.ttf*>{value|mmm dd}",
Chart::AllPassFilter(), "{value|hh:nn}");
//
// A Logic Line can be achieved using a StepLineLayer in ChartDirector
//
// Shift the data by 4.5, so instead of 0 - 1, it is now 4.5 to 5.5, or fluctuate around the y =
// 5 (Logic Line label) position.
ArrayMath shiftedLine0 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0])))
).add(4.5);
// Add step lines using the original and the reversed data
StepLineLayer *layer0 = c->addStepLineLayer(shiftedLine0, 0x0000ff);
layer0->setXData(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))));
//
// To perform ON/OFF filling, we draw the logic line, and its reverse, and fill the region in
// between
//
// Shift the data by 2.5, so instead of 0 - 1, it is now 2.5 to 3.5, or fluctuate around the y =
// 3 (ON/OFF Filing label) position.
ArrayMath shiftedLine1 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0])))
).add(2.5);
// Reverse the data, so the 0 becomes 1 and 1 becomes 0, and shift it as well.
ArrayMath reverseShiftedLine1 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[
0])))).mul(-1).add(3.5);
// Add step lines using the original and the reversed data
StepLineLayer *layer1 = c->addStepLineLayer(shiftedLine1, Chart::Transparent);
layer1->addDataSet(reverseShiftedLine1, Chart::Transparent);
layer1->setXData(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))));
// Fill the region between the two step lines with green (00aa22) or red (cc2200), depending on
// whether the original or the reserve is higher.
c->addInterLineLayer(layer1->getLine(0), layer1->getLine(1), 0x00aa22, 0xcc2200);
//
// The ON Only filling is the same as ON/OFF filling, except the OFF filling color is
// transparent
//
// Shift the data by 0.5, so instead of 0 - 1, it is now 0.5 to 1.5, or fluctuate around the y =
// 1 (ON Only Filing label) position.
ArrayMath shiftedLine2 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0])))
).add(0.5);
// Reverse the data, so the 0 becomes 1 and 1 becomes 0, and shift it as well.
ArrayMath reverseShiftedLine2 = ArrayMath(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[
0])))).mul(-1).add(1.5);
// Add step lines using the original and the reversed data
StepLineLayer *layer2 = c->addStepLineLayer(shiftedLine2, Chart::Transparent);
layer2->addDataSet(reverseShiftedLine2, Chart::Transparent);
layer2->setXData(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))));
// Fill the region between the two step lines with green (00aa22) or transparent, depending on
// whether the original or the reserve is higher.
c->addInterLineLayer(layer2->getLine(0), layer2->getLine(1), 0x00aa22, Chart::Transparent);
// Adjust the plot area size, such that the bounding box (inclusive of axes) is 10 pixels from
// the left edge, 10 pixels below the title, 30 pixels from the right edge, and 10 pixels above
// the bottom edge.
c->packPlotArea(10, title->getHeight() + 10, c->getWidth() - 30, c->getHeight() - 10);
// Output the chart
c->makeChart("binaryseries.png");
//free up resources
delete c;
return 0;
}
//
// Draw the chart and display it in the given viewer
//
void ZoomScrollTrack2::drawChart(QChartViewer *viewer)
{
// Get the start date and end date that are visible on the chart.
double viewPortStartDate = viewer->getValueAtViewPort("x", viewer->getViewPortLeft());
double viewPortEndDate = viewer->getValueAtViewPort("x", viewer->getViewPortLeft() +
viewer->getViewPortWidth());
// Get the array indexes that corresponds to the visible start and end dates
int startIndex = (int)floor(Chart::bSearch(m_timeStamps, viewPortStartDate));
int endIndex = (int)ceil(Chart::bSearch(m_timeStamps, viewPortEndDate));
int noOfPoints = endIndex - startIndex + 1;
// Extract the part of the data array that are visible.
DoubleArray viewPortTimeStamps = DoubleArray(m_timeStamps.data + startIndex, noOfPoints);
DoubleArray viewPortDataSeriesA = DoubleArray(m_dataSeriesA.data + startIndex, noOfPoints);
DoubleArray viewPortDataSeriesB = DoubleArray(m_dataSeriesB.data + startIndex, noOfPoints);
DoubleArray viewPortDataSeriesC = DoubleArray(m_dataSeriesC.data + startIndex, noOfPoints);
//
// At this stage, we have extracted the visible data. We can use those data to plot the chart.
//
///////////////////////////////////////////////////////////////////////////////////////
// Configure overall chart appearance.
///////////////////////////////////////////////////////////////////////////////////////
// Create an XYChart object of size 650 x 350 pixels, with a white (ffffff) background and grey
// (aaaaaa) border
XYChart *c = new XYChart(650, 350, 0xffffff, 0xaaaaaa);
// Set the plotarea at (55, 55) with width 90 pixels less than chart width, and height 90 pixels
// less than chart height. Use a vertical gradient from light blue (f0f6ff) to sky blue (a0c0ff)
// as background. Set border to transparent and grid lines to white (ffffff).
c->setPlotArea(55, 55, c->getWidth() - 90, c->getHeight() - 90, c->linearGradientColor(0, 55, 0,
c->getHeight() - 35, 0xf0f6ff, 0xa0c0ff), -1, Chart::Transparent, 0xffffff, 0xffffff);
// As the data can lie outside the plotarea in a zoomed chart, we need enable clipping.
c->setClipping();
// Add a title to the chart using 18 pts Times New Roman Bold Italic font
c->addTitle(" Zooming and Scrolling with Track Line (2)", "timesbi.ttf", 18);
// Add a legend box at (55, 30) using horizontal layout. Use 8pts Arial Bold as font. Set the
// background and border color to Transparent and use line style legend key.
LegendBox *b = c->addLegend(55, 30, false, "arialbd.ttf", 8);
b->setBackground(Chart::Transparent);
b->setLineStyleKey();
// Set the axis stem to transparent
c->xAxis()->setColors(Chart::Transparent);
c->yAxis()->setColors(Chart::Transparent);
// Add axis title using 10pts Arial Bold Italic font
c->yAxis()->setTitle("Ionic Temperature (C)", "arialbi.ttf", 10);
///////////////////////////////////////////////////////////////////////////////////////
// Add data to chart
///////////////////////////////////////////////////////////////////////////////////////
//
// In this example, we represent the data by lines. You may modify the code below to use other
// representations (areas, scatter plot, etc).
//
// Add a line layer for the lines, using a line width of 2 pixels
LineLayer *layer = c->addLineLayer();
layer->setLineWidth(2);
// In this demo, we do not have too many data points. In real code, the chart may contain a lot
// of data points when fully zoomed out - much more than the number of horizontal pixels in this
// plot area. So it is a good idea to use fast line mode.
layer->setFastLineMode();
// Now we add the 3 data series to a line layer, using the color red (ff0000), green
// (00cc00) and blue (0000ff)
layer->setXData(viewPortTimeStamps);
layer->addDataSet(viewPortDataSeriesA, 0xff3333, "Alpha");
layer->addDataSet(viewPortDataSeriesB, 0x008800, "Beta");
layer->addDataSet(viewPortDataSeriesC, 0x3333CC, "Gamma");
///////////////////////////////////////////////////////////////////////////////////////
// Configure axis scale and labelling
///////////////////////////////////////////////////////////////////////////////////////
// Set the x-axis as a date/time axis with the scale according to the view port x range.
viewer->syncDateAxisWithViewPort("x", c->xAxis());
//
// In this demo, the time range can be from a few years to a few days. We demonstrate how to set
// up different date/time format based on the time range.
//
// If all ticks are yearly aligned, then we use "yyyy" as the label format.
c->xAxis()->setFormatCondition("align", 360 * 86400);
c->xAxis()->setLabelFormat("{value|yyyy}");
// If all ticks are monthly aligned, then we use "mmm yyyy" in bold font as the first
// label of a year, and "mmm" for other labels.
c->xAxis()->setFormatCondition("align", 30 * 86400);
c->xAxis()->setMultiFormat(Chart::StartOfYearFilter(), "<*font=bold*>{value|mmm yyyy}",
Chart::AllPassFilter(), "{value|mmm}");
// If all ticks are daily algined, then we use "mmm dd<*br*>yyyy" in bold font as the
// first label of a year, and "mmm dd" in bold font as the first label of a month, and
// "dd" for other labels.
c->xAxis()->setFormatCondition("align", 86400);
c->xAxis()->setMultiFormat(Chart::StartOfYearFilter(),
"<*block,halign=left*><*font=bold*>{value|mmm dd<*br*>yyyy}",
Chart::StartOfMonthFilter(), "<*font=bold*>{value|mmm dd}");
c->xAxis()->setMultiFormat(Chart::AllPassFilter(), "{value|dd}");
// For all other cases (sub-daily ticks), use "hh:nn<*br*>mmm dd" for the first label of
// a day, and "hh:nn" for other labels.
c->xAxis()->setFormatCondition("else");
c->xAxis()->setMultiFormat(Chart::StartOfDayFilter(),
"<*font=bold*>{value|hh:nn<*br*>mmm dd}", Chart::AllPassFilter(), "{value|hh:nn}");
///////////////////////////////////////////////////////////////////////////////////////
// Output the chart
///////////////////////////////////////////////////////////////////////////////////////
// We need to update the track line too. If the mouse is moving on the chart (eg. if
// the user drags the mouse on the chart to scroll it), the track line will be updated
// in the MouseMovePlotArea event. Otherwise, we need to update the track line here.
if ((!viewer->isInMouseMoveEvent()) && viewer->isMouseOnPlotArea())
trackLineLabel(c, viewer->getPlotAreaMouseX());
delete viewer->getChart();
viewer->setChart(c);
}
int main(int argc, char *argv[])
{
// The data for the chart
double data[] = {40, 15, 7, 5, 2};
// The labels for the chart
const char *labels[] = {"Hard Disk", "PCB", "Printer", "CDROM", "Keyboard"};
// In the pareto chart, the line data are just the accumulation of the raw data,
// scaled to a range of 0 - 100%
ArrayMath lineData = ArrayMath(DoubleArray(data, sizeof(data)/sizeof(data[0])));
lineData.acc();
double scaleFactor = lineData.max() / 100;
if (scaleFactor == 0) {
// Avoid division by zero error for zero data
scaleFactor = 1;
}
lineData.div(scaleFactor);
// Create a XYChart object of size 480 x 300 pixels. Set background color to
// brushed silver, with a grey (bbbbbb) border and 2 pixel 3D raised effect. Use
// rounded corners. Enable soft drop shadow.
XYChart *c = new XYChart(400, 300, Chart::brushedSilverColor(), 0xbbbbbb, 2);
c->setRoundedFrame();
c->setDropShadow();
// Add a title to the chart using 15 points Arial Italic. Set top/bottom margins
// to 12 pixels.
TextBox *title = c->addTitle("Pareto Chart Demonstration", "ariali.ttf", 15);
title->setMargin(0, 0, 12, 12);
// Tentatively set the plotarea at (50, 40). Set the width to 100 pixels less
// than the chart width, and the height to 80 pixels less than the chart height.
// Use pale grey (f4f4f4) background, transparent border, and dark grey (444444)
// dotted grid lines.
c->setPlotArea(50, 40, c->getWidth() - 100, c->getHeight() - 80, 0xf4f4f4, -1,
Chart::Transparent, c->dashLineColor(0x444444, Chart::DotLine));
// Add a line layer for the pareto line
LineLayer *lineLayer = c->addLineLayer();
// Add the pareto line using deep blue (0000ff) as the color, with circle symbols
lineLayer->addDataSet(lineData.result(), 0x0000ff)->setDataSymbol(
Chart::CircleShape, 9, 0x0000ff, 0x0000ff);
// Set the line width to 2 pixel
lineLayer->setLineWidth(2);
// Bind the line layer to the secondary (right) y-axis.
lineLayer->setUseYAxis2();
// Add a multi-color bar layer using the given data.
BarLayer *barLayer = c->addBarLayer(DoubleArray(data,
sizeof(data)/sizeof(data[0])), IntArray(0, 0));
// Set soft lighting for the bars with light direction from the right
barLayer->setBorderColor(Chart::Transparent, Chart::softLighting(Chart::Right));
// Set the labels on the x axis.
c->xAxis()->setLabels(StringArray(labels, sizeof(labels)/sizeof(labels[0])));
// Set the secondary (right) y-axis scale as 0 - 100 with a tick every 20 units
c->yAxis2()->setLinearScale(0, 100, 20);
// Set the format of the secondary (right) y-axis label to include a percentage
// sign
c->yAxis2()->setLabelFormat("{value}%");
// Set the relationship between the two y-axes, which only differ by a scaling
// factor
c->yAxis()->syncAxis(c->yAxis2(), scaleFactor);
// Set the format of the primary y-axis label foramt to show no decimal point
c->yAxis()->setLabelFormat("{value|0}");
// Add a title to the primary y-axis
c->yAxis()->setTitle("Frequency");
// Set all axes to transparent
c->xAxis()->setColors(Chart::Transparent);
c->yAxis()->setColors(Chart::Transparent);
c->yAxis2()->setColors(Chart::Transparent);
// Adjust the plot area size, such that the bounding box (inclusive of axes) is
// 10 pixels from the left edge, just below the title, 10 pixels from the right
// edge, and 20 pixels from the bottom edge.
c->packPlotArea(10, title->getHeight(), c->getWidth() - 10, c->getHeight() - 20);
// Output the chart
c->makeChart("pareto.jpg");
//free up resources
delete c;
return 0;
}
int main(int argc, char *argv[])
{
// In this example, the data points are unevenly spaced on the x-axis
double dataY[] = {4.7, 4.7, 6.6, 2.2, 4.7, 4.0, 4.0, 5.1, 4.5, 4.5, 6.8, 4.5, 4, 2.1, 3, 2.5,
2.5, 3.1};
double dataX[] = {Chart::chartTime(1999, 7, 1), Chart::chartTime(2000, 1, 1), Chart::chartTime(
2000, 2, 1), Chart::chartTime(2000, 4, 1), Chart::chartTime(2000, 5, 8), Chart::chartTime(
2000, 7, 5), Chart::chartTime(2001, 3, 5), Chart::chartTime(2001, 4, 7), Chart::chartTime(
2001, 5, 9), Chart::chartTime(2002, 2, 4), Chart::chartTime(2002, 4, 4), Chart::chartTime(
2002, 5, 8), Chart::chartTime(2002, 7, 7), Chart::chartTime(2002, 8, 30), Chart::chartTime(
2003, 1, 2), Chart::chartTime(2003, 2, 16), Chart::chartTime(2003, 11, 6), Chart::chartTime(
2004, 1, 4)};
// Data points are assigned different symbols based on point type
double pointType[] = {0, 1, 0, 1, 2, 1, 0, 0, 1, 1, 2, 2, 1, 0, 2, 1, 2, 0};
// Create a XYChart object of size 480 x 320 pixels. Use a vertical gradient color from pale
// blue (e8f0f8) to sky blue (aaccff) spanning half the chart height as background. Set border
// to blue (88aaee). Use rounded corners. Enable soft drop shadow.
XYChart *c = new XYChart(480, 320);
c->setBackground(c->linearGradientColor(0, 0, 0, c->getHeight() / 2, 0xe8f0f8, 0xaaccff),
0x88aaee);
c->setRoundedFrame();
c->setDropShadow();
// Add a title to the chart using 15 points Arial Italic font. Set top/bottom margins to 12
// pixels.
TextBox *title = c->addTitle("Multi-Symbol Line Chart Demo", "ariali.ttf", 15);
title->setMargin(0, 0, 12, 12);
// Tentatively set the plotarea to 50 pixels from the left edge to allow for the y-axis, and to
// just under the title. Set the width to 65 pixels less than the chart width, and the height to
// reserve 90 pixels at the bottom for the x-axis and the legend box. Use pale blue (e8f0f8)
// background, transparent border, and grey (888888) dotted horizontal and vertical grid lines.
c->setPlotArea(50, title->getHeight(), c->getWidth() - 65, c->getHeight() - title->getHeight() -
90, 0xe8f0f8, -1, Chart::Transparent, c->dashLineColor(0x888888, Chart::DotLine), -1);
// Add a legend box where the bottom-center is anchored to the 12 pixels above the bottom-center
// of the chart. Use horizontal layout and 8 points Arial font.
LegendBox *legendBox = c->addLegend(c->getWidth() / 2, c->getHeight() - 12, false,
"arialbd.ttf", 8);
legendBox->setAlignment(Chart::BottomCenter);
// Set the legend box background and border to pale blue (e8f0f8) and bluish grey (445566)
legendBox->setBackground(0xe8f0f8, 0x445566);
// Use rounded corners of 5 pixel radius for the legend box
legendBox->setRoundedCorners(5);
// Set the y axis label format to display a percentage sign
c->yAxis()->setLabelFormat("{value}%");
// Set y-axis title to use 10 points Arial Bold Italic font
c->yAxis()->setTitle("Axis Title Placeholder", "arialbi.ttf", 10);
// Set axis labels to use Arial Bold font
c->yAxis()->setLabelStyle("arialbd.ttf");
c->xAxis()->setLabelStyle("arialbd.ttf");
// We add the different data symbols using scatter layers. The scatter layers are added before
// the line layer to make sure the data symbols stay on top of the line layer.
// We select the points with pointType = 0 (the non-selected points will be set to NoValue), and
// use yellow (ffff00) 15 pixels high 5 pointed star shape symbols for the points. (This example
// uses both x and y coordinates. For charts that have no x explicitly coordinates, use an empty
// array as dataX.)
c->addScatterLayer(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))), ArrayMath(
DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0])))).selectEQZ(DoubleArray(
pointType, (int)(sizeof(pointType) / sizeof(pointType[0]))), Chart::NoValue),
"Point Type 0", Chart::StarShape(5), 15, 0xffff00);
// Similar to above, we select the points with pointType - 1 = 0 and use green (ff00) 13 pixels
// high six-sided polygon as symbols.
c->addScatterLayer(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))), ArrayMath(
DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0])))).selectEQZ(ArrayMath(
DoubleArray(pointType, (int)(sizeof(pointType) / sizeof(pointType[0])))).sub(1),
Chart::NoValue), "Point Type 1", Chart::PolygonShape(6), 13, 0x00ff00);
// Similar to above, we select the points with pointType - 2 = 0 and use red (ff0000) 13 pixels
// high X shape as symbols.
c->addScatterLayer(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))), ArrayMath(
DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0])))).selectEQZ(ArrayMath(
DoubleArray(pointType, (int)(sizeof(pointType) / sizeof(pointType[0])))).sub(2),
Chart::NoValue), "Point Type 2", Chart::Cross2Shape(), 13, 0xff0000);
// Finally, add a blue (0000ff) line layer with line width of 2 pixels
LineLayer *layer = c->addLineLayer(DoubleArray(dataY, (int)(sizeof(dataY) / sizeof(dataY[0]))),
0x0000ff);
layer->setXData(DoubleArray(dataX, (int)(sizeof(dataX) / sizeof(dataX[0]))));
layer->setLineWidth(2);
// Adjust the plot area size, such that the bounding box (inclusive of axes) is 10 pixels from
// the left edge, just below the title, 25 pixels from the right edge, and 8 pixels above the
// legend box.
c->packPlotArea(10, title->getHeight(), c->getWidth() - 25, c->layoutLegend()->getTopY() - 8);
// Output the chart
c->makeChart("multisymbolline.png");
//free up resources
delete c;
return 0;
}
int main(int argc, char *argv[])
{
// The data for the chart
double data[] = {800, 600, 1000, 1400};
double widths[] = {250, 500, 960, 460};
const char *labels[] = {"Wind", "Hydro", "Coal", "Natural Gas"};
// The colors to use
int colors[] = {0x00aa00, 0x66aaee, 0xee6622, 0xffbb00};
// Create a XYChart object of size 500 x 350 pixels
XYChart *c = new XYChart(500, 350);
// Add a title to the chart using 15 pts Arial Italic font
c->addTitle("Energy Generation Breakdown", "ariali.ttf", 15);
// Set the plotarea at (60, 60) and of (chart_width - 90) x (chart_height - 100)
// in size. Use a vertical gradient color from light blue (f9f9ff) to sky blue
// (aaccff) as background. Set grid lines to white (ffffff).
int plotAreaBgColor = c->linearGradientColor(0, 60, 0, c->getHeight() - 40,
0xaaccff, 0xf9fcff);
c->setPlotArea(60, 60, c->getWidth() - 90, c->getHeight() - 100, plotAreaBgColor,
-1, -1, 0xffffff);
// Add a legend box at (50, 30) using horizontal layout and transparent
// background.
c->addLegend(55, 30, false)->setBackground(Chart::Transparent);
// Add titles to x/y axes with 10 points Arial Bold font
c->xAxis()->setTitle("Mega Watts", "arialbd.ttf", 10);
c->yAxis()->setTitle("Cost per MWh (dollars)", "arialbd.ttf", 10);
// Set the x axis rounding to false, so that the x-axis will fit the data exactly
c->xAxis()->setRounding(false, false);
// In ChartDirector, there is no bar layer that can have variable bar widths, but
// you may create a bar using an area layer. (A bar can be considered as the area
// under a rectangular outline.) So by using a loop to create one bar per area
// layer, we can achieve a variable width bar chart.
// starting position of current bar
double currentX = 0;
int i;
for(i = 0; i < sizeof(data) / sizeof(data[0]); ++i) {
// ending position of current bar
double nextX = currentX + widths[i];
// outline of the bar
double dataX[] = {currentX, currentX, nextX, nextX};
double dataY[] = {0, data[i], data[i], 0};
// create the area layer to fill the bar
AreaLayer *layer = c->addAreaLayer(DoubleArray(dataY,
sizeof(dataY)/sizeof(dataY[0])), colors[i], labels[i]);
layer->setXData(DoubleArray(dataX, sizeof(dataX)/sizeof(dataX[0])));
// the ending position becomes the starting position of the next bar
currentX = nextX;
}
// Output the chart
c->makeChart("varwidthbar.png");
//free up resources
delete c;
return 0;
}
int main(int argc, char *argv[])
{
// The data for the chart
double data0[] = {42, 49, Chart::NoValue, 38, 64, 56, 29, 41, 44, 57};
double data1[] = {65, 75, 47, 34, 42, 49, 73, Chart::NoValue, 90, 69, 66, 78};
double data2[] = {Chart::NoValue, Chart::NoValue, 25, 28, 38, 20, 22,
Chart::NoValue, 25, 33, 30, 24};
const char *labels[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug",
"Sep", "Oct", "Nov", "Dec"};
// Create a XYChart object of size 600 x 360 pixels. Set background color to
// brushed silver, with a 2 pixel 3D border. Use rounded corners.
XYChart *c = new XYChart(600, 360, Chart::brushedSilverColor(),
Chart::Transparent, 2);
c->setRoundedFrame();
// Add a title using 18 pts Times New Roman Bold Italic font. #Set top/bottom
// margins to 6 pixels.
TextBox *title = c->addTitle("Product Line Global Revenue", "timesbi.ttf", 18);
title->setMargin(0, 0, 6, 6);
// Add a separator line just under the title
c->addLine(10, title->getHeight(), c->getWidth() - 11, title->getHeight(),
Chart::LineColor);
// Add a legend box where the top-center is anchored to the horizontal center of
// the chart, just under the title. Use horizontal layout and 10 points Arial
// Bold font, and transparent background and border.
LegendBox *legendBox = c->addLegend(c->getWidth() / 2, title->getHeight(), false,
"arialbd.ttf", 10);
legendBox->setAlignment(Chart::TopCenter);
legendBox->setBackground(Chart::Transparent, Chart::Transparent);
// Tentatively set the plotarea at (70, 75) and of 460 x 240 pixels in size. Use
// transparent border and black (000000) grid lines
c->setPlotArea(70, 75, 460, 240, -1, -1, Chart::Transparent, 0x000000, -1);
// Set the x axis labels
c->xAxis()->setLabels(StringArray(labels, sizeof(labels)/sizeof(labels[0])));
// Show the same scale on the left and right y-axes
c->syncYAxis();
// Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this
// as the guideline when putting ticks on the y-axis.
c->yAxis()->setTickDensity(30);
// Set all axes to transparent
c->xAxis()->setColors(Chart::Transparent);
c->yAxis()->setColors(Chart::Transparent);
c->yAxis2()->setColors(Chart::Transparent);
// Set the x-axis margins to 15 pixels, so that the horizontal grid lines can
// extend beyond the leftmost and rightmost vertical grid lines
c->xAxis()->setMargin(15, 15);
// Set axis label style to 8pts Arial Bold
c->xAxis()->setLabelStyle("arialbd.ttf", 8);
c->yAxis()->setLabelStyle("arialbd.ttf", 8);
c->yAxis2()->setLabelStyle("arialbd.ttf", 8);
// Add axis title using 10pts Arial Bold Italic font
c->yAxis()->setTitle("Revenue in USD millions", "arialbi.ttf", 10);
c->yAxis2()->setTitle("Revenue in USD millions", "arialbi.ttf", 10);
// Add the first line. The missing data will be represented as gaps in the line
// (the default behaviour)
LineLayer *layer0 = c->addLineLayer();
layer0->addDataSet(DoubleArray(data0, sizeof(data0)/sizeof(data0[0])), 0xff0000,
"Quantum Computer")->setDataSymbol(Chart::GlassSphere2Shape, 11);
layer0->setLineWidth(3);
// Add the second line. The missing data will be represented by using dash lines
// to bridge the gap
LineLayer *layer1 = c->addLineLayer();
layer1->addDataSet(DoubleArray(data1, sizeof(data1)/sizeof(data1[0])), 0x00ff00,
"Atom Synthesizer")->setDataSymbol(Chart::GlassSphere2Shape, 11);
layer1->setLineWidth(3);
layer1->setGapColor(c->dashLineColor(0x00ff00));
// Add the third line. The missing data will be ignored - just join the gap with
// the original line style.
LineLayer *layer2 = c->addLineLayer();
layer2->addDataSet(DoubleArray(data2, sizeof(data2)/sizeof(data2[0])), 0xff6600,
"Proton Cannon")->setDataSymbol(Chart::GlassSphere2Shape, 11);
layer2->setLineWidth(3);
layer2->setGapColor(Chart::SameAsMainColor);
// layout the legend so we can get the height of the legend box
c->layoutLegend();
// Adjust the plot area size, such that the bounding box (inclusive of axes) is
// 15 pixels from the left edge, just under the legend box, 16 pixels from the
// right edge, and 25 pixels from the bottom edge.
c->packPlotArea(15, legendBox->getTopY() + legendBox->getHeight(), c->getWidth()
- 16, c->getHeight() - 25);
// Output the chart
c->makeChart("missingpoints.jpg");
//free up resources
delete c;
return 0;
}
