Package org.faceless.graph2

Class LogAxis

  • public class LogAxis
extends Axis
    A type of Axis that can be used to plot Logarithmic values. This class works as a "wrapper" around a simple axis. So, for example, to plot a logarithmic scale of dollar values on the left axis: 
      Axis axis = NumericAxis.getCurrencyAxis(Locale.USA);
  axis = new LogAxis(axis);
  graph.setAxis(Axis.LEFT, axis);

    • Constructor Detail

      • LogAxis

        public LogAxis​(Axis axis)
        Create a new LogAxis with a base of 10
        Parameters:
        axis - the axis to wrap

      • LogAxis

        public LogAxis​(Axis axis,
               double base)
        Create a new LogAxis with the specified base
        Parameters:
        axis - the axis to wrap
        base - the base to use - must be > 0 but not 1

    • Method Detail

      • setZeroIntersection

        public void setZeroIntersection​(boolean zero)
        Description copied from class: Axis
        Whether this axis should cross it's adjacent axis where that axis is zero. Unless you're plotting negative values on the graph, this setting won't have any effect.
        Overrides:
        setZeroIntersection in class Axis
        Parameters:
        zero - whether to cross the adjacent axis at zero. The default is false

      • setToothLength

        public void setToothLength​(double toothlength)
        Description copied from class: Axis
        Set the length of the teeth that come off the spine of the axis. The toothlength is a fraction of the width of the whole graph (as a guide, the default is 0.01) so a value between 0 (for no teeth) and 0.02 would be typical.
        Overrides:
        setToothLength in class Axis
        Parameters:
        toothlength - the length of the teeth as a proportion of the width of the graph. The default is 0.01

      • setSpineStyle

        public void setSpineStyle​(Style style)
        Description copied from class: Axis
        Set the style used to draw the spine of the axis.
        Overrides:
        setSpineStyle in class Axis
        Parameters:
        style - the style to draw the spine and teeth in - the default is a solid black line.

      • setToothTextStyle

        public void setToothTextStyle​(TextStyle style)
        Description copied from class: Axis
        Set the style used to draw the labels on the teeth. The default is Black 10pt text in the Default font. Remember the setPadding... methods can be used to increase the space between the teeth and their text, and the TextStyle.setAlign(int) method used to control the position of the text relative to the teeth.
        Overrides:
        setToothTextStyle in class Axis
        Parameters:
        style - the style to display the teeth labels in.

      • setWallPaint

        public void setWallPaint​(Paint paint)
        Description copied from class: Axis
        Set the paint to be used on the wall next to this axis. These walls run "into" the graph, so for graphs displayed only in 2D (ie. with no X-Rotation or Y-Rotation these walls would be invisible.
        Overrides:
        setWallPaint in class Axis
        Parameters:
        paint - the Paint to use on the wall running into the graph from this axis, or null to not paint the wall
        See Also:
        AxesGraph.setBackWallPaint(Paint)

      • steps

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

        The steps method controls where the teeth are placed on the spine. Each subclass of Axis has a different strategy - for instance, the DateAxis will try and place ticks on the 1st of the month, the NumericAxis will try and place them evenly across the range and so on.

        The returned array should consist of a range of numbers, ordered from low to high, which mark the locations of the teeth on the spine. min and max are the minimum and maximum values of the data to plot, and these values will usually be the first and last values in the returned array.

        Those wanting to create their own custom axis will typically override this method and Axis.format(double).

        Specified by:
        steps in class Axis
        Parameters:
        min - the minimum value of the data to plot
        max - the maximum value of the data to plot
        Returns:
        an array of doubles representing the positions to place teeth on this axis

      • format

        public String format​(double in)
        Description copied from class: Axis

        Given the specified number, return the text that should be placed against the tooth at that position. For example, an Axis that simply plotted integer values might return Integer.toString((int)in)

        Those wanting to create their own custom axis will typically override this method and Axis.steps(double, double).

        Specified by:
        format in class Axis
        Parameters:
        in - the value to format
        Returns:
        the value formatted as a String

      • setMaxValue

        public void setMaxValue​(double val)
        Description copied from class: Axis
        Set the maximum value to be plotted on the Axis. If not set, this will default to the maximum value of all the Series plotted against this axis. If this value is too small to fit the values from the series, it will be expanded - for example, if your series plots values from 0 to 10 and this is set to 5, it will be silently increased to 10 to accomodate the required range of values.
        Overrides:
        setMaxValue in class Axis
        Parameters:
        val - the maximum value to plot on this axis

      • setMinValue

        public void setMinValue​(double val)
        Description copied from class: Axis
        Set the minimum value to be plotted on the Axis. If not set, this will default to the minimum value of all the Series plotted against this axis. Like Axis.setMaxValue(double) this value will be expanded if required to fit the values from the various series.
        Overrides:
        setMinValue in class Axis
        Parameters:
        val - the minimum value to plot on this axis