Lines are used to display information in Line Charts. There are three different types.

Normal

Normal Line charts create lines based on the data. They use DateTimeXAxis or IndexedXAxis as the XAxis based on the series and NumericYAxis as the YAxis.

                                 Figure 1 - Normal Line Chart

[Java]
     // Create a PDF Document
     Document document = new Document();
     // Create a Page and add it to the document
     Page page = new Page();
     document.getPages().add(page);
        
     // Create a chart
     Chart chart = new Chart(0, 0, 400, 230);
     // Create a plot area
     PlotArea plotArea = chart.getPrimaryPlotArea();
        
     // Create header titles and add it to the chart
     Title title1 = new Title("Website Visitors");
     Title title2 = new Title("Year - 2007");
     chart.getHeaderTitles().add(title1);
     chart.getHeaderTitles().add(title2);
        
     // Create a indexed line series and add values to it
     IndexedLineSeries lineSeries1 = new IndexedLineSeries("Website A");
     lineSeries1.getValues().add(new float[] { 5, 7, 9, 6 });
     IndexedLineSeries lineSeries2 = new IndexedLineSeries("Website B");
     lineSeries2.getValues().add(new float[] { 4, 2, 5, 8 });
     IndexedLineSeries lineSeries3 = new IndexedLineSeries("Website C");
     lineSeries3.getValues().add(new float[] { 2, 4, 6, 9 });
        
     // Add indexed line series to the plot area
     plotArea.getSeries().add(lineSeries1);
     plotArea.getSeries().add(lineSeries2);
     plotArea.getSeries().add(lineSeries3);
         
     // Create a title and add it to the yaxis
     Title lTitle = new Title("Visitors (in millions)");
     lineSeries1.getYAxis().getTitles().add(lTitle);
         
     //Adding AxisLabels to the XAxis
     lineSeries1.getXAxis().getLabels().add(new IndexedXAxisLabel("Q1", 0));
     lineSeries1.getXAxis().getLabels().add(new IndexedXAxisLabel("Q2", 1));
     lineSeries1.getXAxis().getLabels().add(new IndexedXAxisLabel("Q3", 2));
     lineSeries1.getXAxis().getLabels().add(new IndexedXAxisLabel("Q4", 3));
        
     // Add the chart to the page
     page.getElements().add(chart);
     // Save the PDF
     document.draw("[PhysicalPath]/MyDocument.pdf");

Stacked

Stacked charts show related data, one on top of the other. They use DateTimeXAxis or IndexedXAxis as the XAxis based on the series and NumericYAxis as the YAxis.

                              Figure 2 - Stacked Line Chart

[Java]
   // Create a PDF Document
   Document document = new Document();
   // Create a Page and add it to the document
   Page page = new Page();
   document.getPages().add(page);
        
   // Create a chart
   Chart chart = new Chart(0, 0, 400, 230);
   // Create a plot area
   PlotArea plotArea = chart.getPrimaryPlotArea();
        
   // Create header titles and add it to the chart
   Title title1 = new Title("Website Visitors");
   Title title2 = new Title("Year - 2007");
   chart.getHeaderTitles().add(title1);
   chart.getHeaderTitles().add(title2);
    
   // Create a indexed stacked line series elements and add values to it
   IndexedStackedLineSeriesElement seriesElement1 = new IndexedStackedLineSeriesElement("Website A");
   seriesElement1.getValues().add(new float[] { 5, 7, 9, 6 });
   IndexedStackedLineSeriesElement seriesElement2 = new IndexedStackedLineSeriesElement("Website B");
   seriesElement2.getValues().add(new float[] { 4, 2, 5, 8 });
   IndexedStackedLineSeriesElement seriesElement3 = new IndexedStackedLineSeriesElement("Website C");
   seriesElement3.getValues().add(new float[] { 2, 4, 6, 9 });
        
   // Create a Indexed Stacked Line Series
   IndexedStackedLineSeries lineSeries = new IndexedStackedLineSeries();
   // Add indexed stacked line series elements to the Indexed Stacked Line Series
   lineSeries.add(seriesElement1);
   lineSeries.add(seriesElement2);
   lineSeries.add(seriesElement3);
        
   // Add the series to the plot area
   plotArea.getSeries().add(lineSeries);
        
   // Create a title and add it to the yaxis
   Title lTitle = new Title("Visitors (in millions)");
   lineSeries.getYAxis().getTitles().add(lTitle);
         
   //Adding AxisLabels to the XAxis
   lineSeries.getXAxis().getLabels().add(new IndexedXAxisLabel("Q1", 0));
   lineSeries.getXAxis().getLabels().add(new IndexedXAxisLabel("Q2", 1));
   lineSeries.getXAxis().getLabels().add(new IndexedXAxisLabel("Q3", 2));
   lineSeries.getXAxis().getLabels().add(new IndexedXAxisLabel("Q4", 3));
        
   // Add the chart to the page
   page.getElements().add(chart);
   // Save the PDF
   document.draw("[PhysicalPath]/MyDocument.pdf");

100% Stacked

100% stacked charts are similar to stacked charts, but here the data is expressed as a percentage. They use DateTimeXAxis or IndexedXAxis as the XAxis based on the series and PercentageYAxis as the YAxis. 

                              Figure 3 - Stacked 100% Line Chart

[Java]
     // Create a PDF Document
     Document document = new Document();
     // Create a Page and add it to the document
     Page page = new Page();
     document.getPages().add(page);
        
     // Create a chart
     Chart chart = new Chart(0, 0, 400, 230);
     // Create a plot area
     PlotArea plotArea = chart.getPrimaryPlotArea();
        
     // Create header titles and add it to the chart
     Title title1 = new Title("Website Visitors");
     Title title2 = new Title("Year - 2007");
     chart.getHeaderTitles().add(title1);
     chart.getHeaderTitles().add(title2);
        
     // Create indexed 100% line series elements and add values to it
     Indexed100PercentStackedLineSeriesElement seriesElement1 = new Indexed100PercentStackedLineSeriesElement("Website A");
     seriesElement1.getValues().add(new float[] { 5, 7, 9, 6 });
     Indexed100PercentStackedLineSeriesElement seriesElement2 = new Indexed100PercentStackedLineSeriesElement("Website B");
     seriesElement2.getValues().add(new float[] { 4, 2, 5, 8 });
     Indexed100PercentStackedLineSeriesElement seriesElement3 = new Indexed100PercentStackedLineSeriesElement("Website C");
     seriesElement3.getValues().add(new float[] { 2, 4, 6, 9 });
        
     // Create a Indexed 100% Stacked Line Series
     Indexed100PercentStackedLineSeries lineSeries = new Indexed100PercentStackedLineSeries();
     // Add indexed 100% line series elements to the Indexed 100% Stacked Line Series
     lineSeries.add(seriesElement1);
     lineSeries.add(seriesElement2);
     lineSeries.add(seriesElement3);
     // Add the series to the plot area
     plotArea.getSeries().add(lineSeries);
        
     // Create a title and add it to the yaxis
     Title lTitle = new Title("Visitors (in millions)");
     lineSeries.getYAxis().getTitles().add(lTitle);
        
     //Adding AxisLabels to the XAxis
     lineSeries.getXAxis().getLabels().add(new IndexedXAxisLabel("Q1", 0));
     lineSeries.getXAxis().getLabels().add(new IndexedXAxisLabel("Q2", 1));
     lineSeries.getXAxis().getLabels().add(new IndexedXAxisLabel("Q3", 2));
     lineSeries.getXAxis().getLabels().add(new IndexedXAxisLabel("Q4", 3));
        
     // Add the chart to the page
     page.getElements().add(chart);
     // Save the PDF
     document.draw("[PhysicalPath]/MyDocument.pdf");