如何在lineChart javafx中绘制多少数字？

Question

你好我创建了这个代码来显示音频波形，我无法在图形线图中查看它们因为有很多数字。你能帮帮我吗？以下是我的代码......

  // take a file from table (item selected) ; call extractWaveForm and take point that I want to plot; draw linechart
    public void plotAudio() throws IOException, UnsupportedAudioFileException, WavFileException {
        if(Table1.getSelectionModel()!= null){
         extractedData = extractWaveform(files.get(Table1.getSelectionModel().getFocusedIndex()));      
         XYChart.Series<Number, Number> series = new XYChart.Series<Number, Number>();
         series.setName("My Data");
         for(int i =0; i<extractedData.length; i++){
              series.getData().add(new XYChart.Data<Number, Number>(extractedData[i],RATE));
         }
         lineChart.getData().add(series);
        }

    }    
    // call extract to WaveFormExtract class that extract the point.
    public double[] extractWaveform(File file) throws IOException, UnsupportedAudioFileException {
            return new WavFileExtractor().extract(file);
      }