Module: Asposeslidesjava::ChartTrendLines

Defined in:
lib/asposeslidesjava/Charts/charttrendlines.rb

Instance Method Summary collapse

Instance Method Details

#initialize ⇒ Object 



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# File 'lib/asposeslidesjava/Charts/charttrendlines.rb', line 3

def initialize()
    data_dir = File.dirname(File.dirname(File.dirname(File.dirname(__FILE__)))) + '/data/'
            
    # Creating empty presentation
    pres = Rjb::import('com.aspose.slides.Presentation').new

    # Creating a clustered column chart
    chart = pres.getSlides().get_Item(0).getShapes().addChart(Rjb::import('com.aspose.slides.ChartType').ClusteredColumn, 20, 20, 500, 400)

    # Adding ponential trend line for chart series 1
    tredLinep = chart.getChartData().getSeries().get_Item(0).getTrendLines().add(Rjb::import('com.aspose.slides.TrendlineType').Exponential)
    tredLinep.setDisplayEquation(false)
    tredLinep.setDisplayRSquaredValue(false)

    # Adding Linear trend line for chart series 1
    tredLineLin = chart.getChartData().getSeries().get_Item(0).getTrendLines().add(Rjb::import('com.aspose.slides.TrendlineType').Linear)
    tredLineLin.setTrendlineType(Rjb::import('com.aspose.slides.TrendlineType').Linear)
    tredLineLin.getFormat().getLine().getFillFormat().setFillType(Rjb::import('com.aspose.slides.FillType').Solid)
    tredLineLin.getFormat().getLine().getFillFormat().getSolidFillColor().setColor(Rjb::import('java.awt.Color').RED)


    # Adding Logarithmic trend line for chart series 2
    tredLineLog = chart.getChartData().getSeries().get_Item(1).getTrendLines().add(Rjb::import('com.aspose.slides.TrendlineType').Logarithmic)
    tredLineLog.setTrendlineType(Rjb::import('com.aspose.slides.TrendlineType').Logarithmic)
    tredLineLog.addTextFrameForOverriding("New log trend line")

    # Adding MovingAverage trend line for chart series 2
    tredLineMovAvg = chart.getChartData().getSeries().get_Item(1).getTrendLines().add(Rjb::import('com.aspose.slides.TrendlineType').MovingAverage)
    tredLineMovAvg.setTrendlineType(Rjb::import('com.aspose.slides.TrendlineType').MovingAverage)
    tredLineMovAvg.setPeriod(3)
    tredLineMovAvg.setTrendlineName("New TrendLine Name")

    # Adding Polynomial trend line for chart series 3
    tredLinePol = chart.getChartData().getSeries().get_Item(2).getTrendLines().add(Rjb::import('com.aspose.slides.TrendlineType').Polynomial)
    tredLinePol.setTrendlineType(Rjb::import('com.aspose.slides.TrendlineType').Polynomial)
    tredLinePol.setForward(1)
    tredLinePol.setOrder(3)

    # Adding Power trend line for chart series 3
    tredLinePower = chart.getChartData().getSeries().get_Item(1).getTrendLines().add(Rjb::import('com.aspose.slides.TrendlineType').Power)
    tredLinePower.setTrendlineType(Rjb::import('com.aspose.slides.TrendlineType').Power)
    tredLinePower.setBackward(1)

    # Saving the presentation
    save_format = Rjb::import('com.aspose.slides.SaveFormat')
    pres.save(data_dir + "ChartTrendLines.pptx", save_format.Pptx)

    puts "Done with chart trend lines, please check the output file."
end