JavaFX Duplicate Series Added

Question

I am currently learning JavaFX and am trying to create an app that shows a line chart and allows the user to change certain variables which then changes the plotted line. T

Answer 1

Only add your series once to the chart initially when creating your chart.

Update the data without adding the series again:

   public void plot(double[] xArr, double[] yExactArr, double[] yApproxArr) {
    linePlot.getData().clear();

    if (!exactValues.getData().isEmpty()) {
        exactValues.getData().remove(0, xArr.length - 1);
        approxValues.getData().remove(0, xArr.length - 1);
    }

    for (int i = 0; i < xArr.length; i++) {
        exactValues.getData().add(new XYChart.Data(xArr[i], yExactArr[i]));
        approxValues.getData().add(new XYChart.Data(xArr[i], yApproxArr[i]));
    }


    //linePlot.getData().addAll(exactValues, approxValues);
    mainStage.show();
}