title: JFreeChart with truncated data points
body: <p>I have created a JFreeChart with the code below, but the Y-Axis marks are truncated. How should I display the chart even though the data points are overlapped in the Y-Axis?
  Basically, I want the Y-Axis points to be generated from my file, a proper range is populated and displayed in the chart.</p>
  
  <pre><code>private static JFreeChart buildChart(TimeSeriesCollection dataset,
      String title, boolean endPoints) throws IOException {
  
  // Create the chart
  
      JFreeChart chart0 = ChartFactory.createTimeSeriesChart(
          title, "Hour", "Count", dataset, true, true, false);
  
  // Setup the appearance of the chart
      chart0.setBackgroundPaint(Color.white);
      XYPlot plot = (XYPlot) chart0.getXYPlot();
      plot.setBackgroundPaint(Color.lightGray);
      plot.setDomainGridlinePaint(Color.white);
      plot.setRangeGridlinePaint(Color.white);
      plot.setAxisOffset(new RectangleInsets(10.0, 10.0, 10.0, 10.0));
      plot.setDomainCrosshairVisible(true);
      plot.setRangeCrosshairVisible(true);
  
  // Display data points or just the lines?
  
      if (endPoints) {
          XYItemRenderer renderer = plot.getRenderer();
          if (renderer instanceof StandardXYItemRenderer) {
              StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
  
              rr.setBaseShapesVisible(true);
              rr.setBaseShapesFilled(true);
              rr.setDrawSeriesLineAsPath(true);
              rr.setSeriesPaint(0, Color.blue.brighter());
              rr.setSeriesVisible(0, true); // default
              rr.setSeriesVisibleInLegend(0, true);  // default
  
              NumberAxis domainAxis = new NumberAxis();
              domainAxis.setUpperMargin(0.15);
              domainAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
              domainAxis = (NumberAxis) plot.getDomainAxis();
              domainAxis = (NumberAxis) plot.getRangeAxis();
              domainAxis.setAutoRangeIncludesZero(false);
          }
      }
  
   // Tell the chart how we would like dates to read
      DateAxis axis = (DateAxis) plot.getDomainAxis();
      axis.setAutoRange(true);
  
   //axis.getDefaultAutoRange();
      axis.setDateFormatOverride(new SimpleDateFormat("HH:mm"));
  
      try {
  
          ChartUtilities.saveChartAsJPEG(new File("suc.jpg"), 1.0f, chart0, 990, 700);
      } catch (IOException e) {
          e.printStackTrace();
      }
  
      return chart0;
  }
  </code></pre>
  
  <p>Below is the image that is created, clearly you can see that the Y-Axis there is an overlap showing.</p>
  
  <p><img src="https://i.stack.imgur.com/bjnLE.jpg" alt="enter image description here"> </p>