Package org.faceless.graph.formatter

Class DiscreteFormatter

  • public class DiscreteFormatter
extends Formatter

    The DiscreteFormatter treats it's double argument as an index into a list of String values, and returns the matching String.

    This is the formatter that's used to plot the String values on the X axis of a Bar Graph, but it's probably not suitable for general use.

    • Constructor Summary

      Constructors 
      Constructor Description
      DiscreteFormatter​(java.util.List list)
      Create a new DiscreteFormatter

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.String format​(double in)
      Return a String that is the formatted version of the input parameter.
      boolean isDiscrete()
      For this subclass, discrete returns true.
      double[] steps​(double min, double max)
      Which steps between min and max should be marked on the axis.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • DiscreteFormatter

        public DiscreteFormatter​(java.util.List list)
        Create a new DiscreteFormatter
        Parameters:
        list - The list of values on the axis.

    • Method Detail

      • isDiscrete

        public boolean isDiscrete()
        For this subclass, discrete returns true.
        Overrides:
        isDiscrete in class Formatter

      • format

        public java.lang.String format​(double in)
        Description copied from class: Formatter
        Return a String that is the formatted version of the input parameter.
        Specified by:
        format in class Formatter

      • steps

        public double[] steps​(double min,
                      double max)
        Description copied from class: Formatter

        Which steps between min and max should be marked on the axis. This is an array because although the steps will usually be evenly spaced, they may not always be (see the DateFormatter for an example).

        This method returns the default settings, which is to calculate a number of "useful" values between min and max, possibly rounding those two values up or down to fit the scale. The number of values returned depends on the density setting.

        Overrides:
        steps in class Formatter