Module javafx.controls
Package javafx.scene.chart

Class NumberAxis

  • All Implemented Interfaces:
    Styleable, EventTarget
    public final class NumberAxis
extends ValueAxis<Number>
    An axis class that plots a range of numbers with major tick marks every tickUnit. You can use any Number type with this axis.
    Since:
    JavaFX 2.0

    • Constructor Detail

      • NumberAxis

        public NumberAxis()
        Creates an auto-ranging NumberAxis.

      • NumberAxis

        public NumberAxis​(double lowerBound,
                  double upperBound,
                  double tickUnit)
        Creates a non-auto-ranging NumberAxis with the given upper bound, lower bound and tick unit.
        Parameters:
        lowerBound - The lower bound for this axis, i.e. min plottable value
        upperBound - The upper bound for this axis, i.e. max plottable value
        tickUnit - The tick unit, i.e. space between tickmarks

      • NumberAxis

        public NumberAxis​(String axisLabel,
                  double lowerBound,
                  double upperBound,
                  double tickUnit)
        Creates a non-auto-ranging NumberAxis with the given lower bound, upper bound and tick unit.
        Parameters:
        axisLabel - The name to display for this axis
        lowerBound - The lower bound for this axis, i.e. min plottable value
        upperBound - The upper bound for this axis, i.e. max plottable value
        tickUnit - The tick unit, i.e. space between tickmarks

    • Method Detail

      • isForceZeroInRange

        public final boolean isForceZeroInRange()
        Gets the value of the property forceZeroInRange.
        Property description:
        When true zero is always included in the visible range. This only has effect if auto-ranging is on.

      • setForceZeroInRange

        public final void setForceZeroInRange​(boolean value)
        Sets the value of the property forceZeroInRange.
        Property description:
        When true zero is always included in the visible range. This only has effect if auto-ranging is on.

      • getTickUnit

        public final double getTickUnit()
        Gets the value of the property tickUnit.
        Property description:
        The value between each major tick mark in data units. This is automatically set if we are auto-ranging.

      • setTickUnit

        public final void setTickUnit​(double value)
        Sets the value of the property tickUnit.
        Property description:
        The value between each major tick mark in data units. This is automatically set if we are auto-ranging.

      • getTickMarkLabel

        protected String getTickMarkLabel​(Number value)
        Get the string label name for a tick mark with the given value.
        Specified by:
        getTickMarkLabel in class Axis<Number>
        Parameters:
        value - The value to format into a tick label string
        Returns:
        A formatted string for the given value

      • getRange

        protected Object getRange()
        Called to get the current axis range.
        Specified by:
        getRange in class Axis<Number>
        Returns:
        A range object that can be passed to setRange() and calculateTickValues()

      • setRange

        protected void setRange​(Object range,
                        boolean animate)
        Called to set the current axis range to the given range. If isAnimating() is true then this method should animate the range to the new range.
        Specified by:
        setRange in class Axis<Number>
        Parameters:
        range - A range object returned from autoRange()
        animate - If true animate the change in range

      • calculateTickValues

        protected List<Number> calculateTickValues​(double length,
                                           Object range)
        Calculates a list of all the data values for each tick mark in range
        Specified by:
        calculateTickValues in class Axis<Number>
        Parameters:
        length - The length of the axis in display units
        range - A range object returned from autoRange()
        Returns:
        A list of tick marks that fit along the axis if it was the given length

      • calculateMinorTickMarks

        protected List<Number> calculateMinorTickMarks()
        Calculates a list of the data values for every minor tick mark
        Specified by:
        calculateMinorTickMarks in class ValueAxis<Number>
        Returns:
        List of data values where to draw minor tick marks

      • measureTickMarkSize

        protected Dimension2D measureTickMarkSize​(Number value,
                                          Object range)
        Measures the size of the label for a given tick mark value. This uses the font that is set for the tick marks.
        Overrides:
        measureTickMarkSize in class Axis<Number>
        Parameters:
        value - tick mark value
        range - range to use during calculations
        Returns:
        size of tick mark label for given value

      • autoRange

        protected Object autoRange​(double minValue,
                           double maxValue,
                           double length,
                           double labelSize)
        Called to set the upper and lower bound and anything else that needs to be auto-ranged.
        Overrides:
        autoRange in class ValueAxis<Number>
        Parameters:
        minValue - The min data value that needs to be plotted on this axis
        maxValue - The max data value that needs to be plotted on this axis
        length - The length of the axis in display coordinates
        labelSize - The approximate average size a label takes along the axis
        Returns:
        The calculated range

      • getClassCssMetaData

        public static List<CssMetaData<? extends Styleable,​?>> getClassCssMetaData()
        Returns:
        The CssMetaData associated with this class, which may include the CssMetaData of its superclasses.
        Since:
        JavaFX 8.0