Examples of org.jfree.chart.axis.DateAxis

org.jfree.chart.axis.DateAxis
The base class for axes that display dates. You will find it easier to understand how this axis works if you bear in mind that it really displays/measures integer (or long) data, where the integers are milliseconds since midnight, 1-Jan-1970. When displaying tick labels, the millisecond values are converted back to dates using a DateFormat instance.
You can also create a {@link org.jfree.chart.axis.Timeline} and supply inthe constructor to create an axis that only contains certain domain values. For example, this allows you to create a date axis that only contains working days.

            { 1304892000000L, 1304632800000L, 1304546400000L, 1304460000000L,
              1304373600000L, 1304287200000L, 1320015600000L, 1309384800000L,
              1319752800000L, 1319666400000L, 1319580000000L, 1319493600000L };
        Arrays.sort(dates);


        DateAxis axis = new DateAxis("Date");
        // set start and end date
        Date start = new Date(dates[0]);
        Date end = new Date(dates[dates.length-1]);
        axis.setMinimumDate(start);
        axis.setMaximumDate(end);


        SegmentedTimeline timeline =
            SegmentedTimeline.newMondayThroughFridayTimeline();
        timeline.setStartTime(start.getTime());
        axis.setTimeline(timeline);


        BufferedImage image = new BufferedImage(200, 100,
                BufferedImage.TYPE_INT_ARGB);
        Graphics2D g2 = image.createGraphics();
        Rectangle2D area = new Rectangle2D.Double(0.0, 0.0, 500, 200);


        // if the bug is still present, this leads to an endless loop
        axis.refreshTicks(g2, new AxisState(), area, RectangleEdge.BOTTOM);
    }

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        if (_legendItems == null) {
            _setDefaultLegendItems();
        }


        XYPlot xyPlot = _chart.getXYPlot();
        DateAxis axis = (DateAxis) xyPlot.getDomainAxis();
        axis.setRange(_model.getStartDate(), _model.getEndDate());
        axis.setLabel(_getXAxisLabel());


        // mark the ranges of twilight and darkness
        xyPlot.clearDomainMarkers();
        _addDarknessMarker(xyPlot, _model.getNauticalTwilightStart(),
                _model.getNauticalTwilightEnd(), TWILIGHT_ALPHA, Color.gray);

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                _model.getAstronomicalTwilightEnd(), DARKNESS_ALPHA, Color.black);
    }


    // Make the X axis displaying the dates
    private DateAxis _makeDateAxis() {
        DateAxis timeAxis = new DateAxis(_getXAxisLabel(), _model.getTimeZone(), Locale.getDefault());
        timeAxis.setLowerMargin(0.02);  // reduce the default margins on the time axis
        timeAxis.setUpperMargin(0.02);


        // Override date format to handle LST dates
        SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm") {
            public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition pos) {
                if (_model.getTimeZoneId().equals(ElevationPlotModel.LST)) {
                    date = _model.getLst(date);
                }
                return super.format(date, toAppendTo, pos);
            }
        };
        dateFormat.setTimeZone(_model.getTimeZone());
        timeAxis.setDateFormatOverride(dateFormat);


        return timeAxis;
    }

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    /**
     * @param plot
     */
    private void setXAxisFormat(XYPlot plot) {
        DateAxis xAxis = (DateAxis) plot.getHorizontalValueAxis();
        xAxis.setDateFormatOverride(new SimpleDateFormat("dd/MM"));
    }

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      case COMBINED_XY :
        final int layoutConst = getLayoutConstant(layout);
        Plot plot = null;
        switch (layoutConst) {
          case DOMAIN :
            ValueAxis domainAxis = new DateAxis(xAxisLabel);
            plot = new CombinedDomainXYPlot(domainAxis);
            for (int i = 0; i < plotDefinitions.size(); i++) {
              PlotDefinition pd = (PlotDefinition) plotDefinitions.get(i);
              check((Dataset) pd.getDataset(), XYDataset.class, chartType);
              XYPlot temp = (XYPlot) pd.getPlot(chartTypeConst);
              temp.setRangeAxis(new NumberAxis(pd.getYaxislabel()));
              ((CombinedDomainXYPlot) plot).add(temp);
            }
            return new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, plot, true);
          case RANGE :
            ValueAxis rangeAxis = new NumberAxis(yAxisLabel);
            plot = new CombinedRangeXYPlot(rangeAxis);
            for (int i = 0; i < plotDefinitions.size(); i++) {
              PlotDefinition pd = (PlotDefinition) plotDefinitions.get(i);
              check((Dataset) pd.getDataset(), XYDataset.class, chartType);
              XYPlot temp = (XYPlot) pd.getPlot(chartTypeConst);
              temp.setDomainAxis(new DateAxis(pd.getXaxislabel()));
              ((CombinedRangeXYPlot) plot).add(temp);
            }
            return new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT, plot, true);
          default :
            throw new AttributeValidationException(layout, " any value");

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    }
    
  public Axis createAxis(int orientation, int type, String label) {
    switch (type) {
      case AXIS_TYPE_DATE :
        return new DateAxis(label);
      case AXIS_TYPE_NUMBER :
        return new NumberAxis(label);
      case AXIS_TYPE_CATEGORY://added by lrh 2005-07-11
              return new CategoryAxis(label);
      default:

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      StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
      //rr.setPlotShapes(true);
      rr.setShapesFilled(true);
    } 
    
    DateAxis axis = (DateAxis) plot.getDomainAxis();
    axis.setAutoRange(false);
    axis.setVerticalTickLabels(true);
    
    axis.setTickUnit(new DateTickUnit(DateTickUnit.MONTH, 1));
    axis.setDateFormatOverride(new SimpleDateFormat("MMM-yyyy"));
    
      response.setContentType("image/jpeg");          
      ChartUtilities.writeChartAsPNG(response.getOutputStream(), grafico, i * 35, 470);
      response.getOutputStream().flush();
      response.getOutputStream().close();

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    // -----------------------------------------------------------


    String title = chartDefinition.getTitle();
    boolean legend = chartDefinition.isLegendIncluded();


    DateAxis domainAxis = new DateAxis( domainAxisLabel, TimeZone.getDefault() );
    ValueAxis rangeAxis = new NumberAxis( rangeAxisLabel );


    XYItemRenderer renderer = null;
    switch ( chartDefinition.getChartType() ) {
      case LINE_CHART_TYPE:

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    // -----------------------------------------------------------


    String title = chartDefinition.getTitle();
    boolean legend = chartDefinition.isLegendIncluded();


    DateAxis domainAxis = new DateAxis( domainAxisLabel, TimeZone.getDefault() );
    ValueAxis rangeAxis = new NumberAxis( rangeAxisLabel );


    XYItemRenderer renderer = null;
    switch ( chartDefinition.getChartType() ) {
      case AREA_CHART_TYPE:

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        if ( domainAxis != null ) {
          domainAxis.setLabel( timeSeriesCollectionChartDefintion.getDomainTitle() );
          domainAxis.setLabelFont( timeSeriesCollectionChartDefintion.getDomainTitleFont() );
          domainAxis.setVerticalTickLabels( timeSeriesCollectionChartDefintion.isDomainVerticalTickLabels() );
          if ( domainAxis instanceof DateAxis ) {
            DateAxis da = (DateAxis) domainAxis;
            if ( timeSeriesCollectionChartDefintion.getDateMinimum() != null ) {
              da.setMinimumDate( timeSeriesCollectionChartDefintion.getDateMinimum() );
            }
            if ( timeSeriesCollectionChartDefintion.getDateMaximum() != null ) {
              da.setMaximumDate( timeSeriesCollectionChartDefintion.getDateMaximum() );
            }
          }
        }


        ValueAxis rangeAxis = xyPlot.getRangeAxis();

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