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scalaplotjfreechart

Plot scala arrays with jfreechart

I have 2 scala array and I would like to plot them as an x,y plot.

I have heard that jfreechart is a good choice for plotting in scala. I think that the right command to plot them is XYPlot but how can I use it?

  val x = Array(1,2,3,4,5,6,7,8,9,10)
    val y = x.map(_*2)
import org.jfree.chart.plot.XYPlot

with python matplotlib I would have just used plot(x,y)

Solution

  • You'll need to put your data into a DataSet and then use a ChartFrame to display the chart.

    import org.jfree.chart._
import org.jfree.data.xy._

val x = Array[Double](1,2,3,4,5,6,7,8,9,10)
val y = x.map(_*2)
val dataset = new DefaultXYDataset
dataset.addSeries("Series 1",Array(x,y))

val frame = new ChartFrame(
  "Title",
  ChartFactory.createScatterPlot(
    "Plot",
    "X Label",
    "Y Label",
    dataset,
    org.jfree.chart.plot.PlotOrientation.HORIZONTAL,
    false,false,false
  )
)
frame.pack()
frame.setVisible(true)