How to use

getLargerTickUnit

method

in

org.jfree.chart.axis.TickUnitSource

  @Override
  public TickUnit getLargerTickUnit(TickUnit unit) {
    TickUnit newUnit = decorated.getLargerTickUnit(unit);
    if(newUnit.compareTo(lowerUnit)<0) {
      return lowerUnit;
    } else {
      return newUnit;
    }
  }
};

} else {
  prevCandidate = candidate;
  candidate = tickUnits.getLargerTickUnit(prevCandidate);
  if (candidate.equals(prevCandidate)) {
    found = true;  // there are no more candidates

/**
 * Selects an appropriate tick size for the axis.  The strategy is to
 * display as many ticks as possible (selected from a collection of
 * 'standard' tick units) without the labels overlapping.
 *
 * @param g2  the graphics device.
 * @param dataArea  the area defined by the axes.
 * @param edge  the axis location.
 */
protected void selectHorizontalAutoTickUnit(Graphics2D g2,
    Rectangle2D dataArea, RectangleEdge edge) {
  double zero = valueToJava2D(0.0, dataArea, edge);
  double tickLabelWidth = estimateMaximumTickLabelWidth(g2,
      getTickUnit());
  // start with the current tick unit...
  TickUnitSource tickUnits = getStandardTickUnits();
  TickUnit unit1 = tickUnits.getCeilingTickUnit(getTickUnit());
  double x1 = valueToJava2D(unit1.getSize(), dataArea, edge);
  double unit1Width = Math.abs(x1 - zero);
  // then extrapolate...
  double guess = (tickLabelWidth / unit1Width) * unit1.getSize();
  DateTickUnit unit2 = (DateTickUnit) tickUnits.getCeilingTickUnit(guess);
  double x2 = valueToJava2D(unit2.getSize(), dataArea, edge);
  double unit2Width = Math.abs(x2 - zero);
  tickLabelWidth = estimateMaximumTickLabelWidth(g2, unit2);
  if (tickLabelWidth > unit2Width) {
    unit2 = (DateTickUnit) tickUnits.getLargerTickUnit(unit2);
  }
  setTickUnit(unit2, false, false);
}

} else {
  prevCandidate = candidate;
  candidate = tickUnits.getLargerTickUnit(prevCandidate);
  if (candidate.equals(prevCandidate)) {
    found = true;  // there are no more candidates

tickLabelWidth = estimateMaximumTickLabelWidth(g2, unit2);
if (tickLabelWidth > unit2Width) {
  unit2 = (DateTickUnit) tickUnits.getLargerTickUnit(unit2);

finalUnit = (DateTickUnit) tickUnits.getLargerTickUnit(candidate2);

finalUnit = (DateTickUnit) tickUnits.getLargerTickUnit(candidate2);

/**
 * Selects an appropriate tick value for the axis.  The strategy is to
 * display as many ticks as possible (selected from an array of 'standard'
 * tick units) without the labels overlapping.
 *
 * @param g2  the graphics device.
 * @param dataArea  the area in which the plot should be drawn.
 * @param edge  the axis location.
 */
protected void selectVerticalAutoTickUnit(Graphics2D g2,
                     Rectangle2D dataArea,
                     RectangleEdge edge) {
  double tickLabelHeight = estimateMaximumTickLabelHeight(g2);
  // start with the current tick unit...
  TickUnitSource tickUnits = getStandardTickUnits();
  TickUnit unit1 = tickUnits.getCeilingTickUnit(getTickUnit());
  double unitHeight = lengthToJava2D(unit1.getSize(), dataArea, edge);
  // then extrapolate...
  double guess = (tickLabelHeight / unitHeight) * unit1.getSize();
  NumberTickUnit unit2
    = (NumberTickUnit) tickUnits.getCeilingTickUnit(guess);
  double unit2Height = lengthToJava2D(unit2.getSize(), dataArea, edge);
  tickLabelHeight = estimateMaximumTickLabelHeight(g2);
  if (tickLabelHeight > unit2Height) {
    unit2 = (NumberTickUnit) tickUnits.getLargerTickUnit(unit2);
  }
  setTickUnit(unit2, false, false);
}

unit2 = (NumberTickUnit) tickUnits.getLargerTickUnit(unit2);

/**
 * Selects an appropriate tick value for the axis.  The strategy is to
 * display as many ticks as possible (selected from an array of 'standard'
 * tick units) without the labels overlapping.
 *
 * @param g2  the graphics device.
 * @param dataArea  the area defined by the axes.
 * @param edge  the axis location.
 */
protected void selectHorizontalAutoTickUnit(Graphics2D g2,
                      Rectangle2D dataArea,
                      RectangleEdge edge) {
  double tickLabelWidth = estimateMaximumTickLabelWidth(g2,
      getTickUnit());
  // start with the current tick unit...
  TickUnitSource tickUnits = getStandardTickUnits();
  TickUnit unit1 = tickUnits.getCeilingTickUnit(getTickUnit());
  double unit1Width = lengthToJava2D(unit1.getSize(), dataArea, edge);
  // then extrapolate...
  double guess = (tickLabelWidth / unit1Width) * unit1.getSize();
  NumberTickUnit unit2 = (NumberTickUnit) tickUnits.getCeilingTickUnit(
      guess);
  double unit2Width = lengthToJava2D(unit2.getSize(), dataArea, edge);
  tickLabelWidth = estimateMaximumTickLabelWidth(g2, unit2);
  if (tickLabelWidth > unit2Width) {
    unit2 = (NumberTickUnit) tickUnits.getLargerTickUnit(unit2);
  }
  setTickUnit(unit2, false, false);
}

unit2 = (NumberTickUnit) tickUnits.getLargerTickUnit(unit2);

unit2 = (NumberTickUnit) tickUnits.getLargerTickUnit(unit2);

unit2 = (NumberTickUnit) tickUnitSource.getLargerTickUnit(unit2);