NumericAxis  - AS3 Flex

The explicitly assigned maximum value. If no value has been assigned, this will be NaN. Typically, calculations should be performed with the computedMaximum field.

The explicitly assigned minimum value. If no value has been assigned, this will be NaN. Typically calculations should be performed with the computedMinimum field.

Specifies whether Flex rounds values. If false, Flex does not round the values set by the minimum and maximum properties, or modify the default minimum and maximum values.

Standardvärdet är true.

Specifies whether Flex tries to keep the minimum and maximum values rooted at zero. If all axis values are positive, the minimum axis value is zero. If all axis values are negative, the maximum axis value is zero.

Standardvärdet är true.

The computed minimum value for the axis as long as this value is greater than 0. If the maximum value is less than or equal to 0, then the baseline property is the computed maximum. If neither value is greater than 0, then the baseline property is 0.

The computed interval represented by this axis. The computedInterval is used by the AxisRenderer and Gridlines classes to determine where to render tick marks and grid lines. The NumericAxis base class watches this field for changes to determine if the chart needs to be re-rendered. Derived classes are responsible for computing the value of this field.

The computed maximum value represented by this axis. If the user has explicitly assigned a maximum value, the computedMaximum and assignedMaximum properties are usually the same. Otherwise, the computedMaximum is generated from the values represented in the chart.

The computed minimum value represented by this axis. If the user has explicitly assigned a minimum value, the computedMinimum and assignedMinimum properties are usually be the same. Otherwise, the computedMinimum is generated from the values represented in the chart.

An Array of DataDescription structures describing the data being represented by the chart. An axis can use this property to generate values for properties, such as its range.

Determines the direction in which the axis is rendered. Possible values are normal, and inverted. All derived classes should take care of the way min and max are set depending on direction. All series should take care of the way it is rendered depending on the direction of its underlying axis.

Standardvärdet är "normal".

The most recent set of AxisLabel objects generated to represent this axis. This property is null if the axis has been modified and requires new labels. To guarantee that the value of the labelCache property is correct, call the buildLabelCache() method before accessing the labelCache property.

Called to format axis values for display as labels. A labelFunction has the following signature:

      function function_name(labelValue:Object, previousValue:Object, axis:IAxis):String { ... }
      

If you know the types of the data your function will be formatting, you can specify an explicit type for the labelValue and previousValue parameters.

The maximum value where a label should be placed. After computing an adjusted minimum value, many axis types expand the range of the axis further to make room for additional rendering artifacts in the chart, such as labels and borders. This value represents the maximum value in the chart before it is adjusted for these artifacts. Typically axes generate labels to make sure this value is labeled, rather than the adjusted maximum of the axis.

The minimum value where a label should be placed. After computing an adjusted minimum value, many axis types expand the range of the axis further to make room for additional rendering artifacts in the chart, such as labels and borders. This value represents the minimum value in the chart before it is adjusted for these artifacts. Typically axes will generate labels to make sure this value is labeled, rather than the adjusted minimum of the axis.

The most recent set of minor tick marks generated to represent this axis. This property may be null if the axis has been modified and requires new labels and tick marks. Use the public accessor minorTicks to build the minor tick marks on demand.

An Array of minor tick marks generated to represent this axis.

Specifies padding that Flex adds to the calculated minimum and maximum values for the axis when rendering the values on the screen.

Specify a parseFunction to customize how the values rendered by your chart are converted into numeric values. A custom parseFunction is passed a data value and should return a corresponding number representing the same value. By default, this axis uses the ECMA function parseFloat().

The fields of the DescribeData structure that this axis is interested in.

An Array of tick marks for this axis.

Constructor.

Adjusts the generated or assigned range of the axis's labels. This method is called during the update cycle of the axis. Subclasses can override this method to do special processing on the values. By default, no adjustments are made to the range.

Parametrar

Populates the labelCache property with labels representing the current values of the axis. Subclasses must implement this function. This function is called many times, so you should check to see if the labelCache property is null before performing any calculations.

Builds an Array of positions for the minor tick marks Array that is generated by this axis. Subclasses must implement this function. This function is called automatically by the NumericAxis. You should access the minorTicks property instead of calling this function directly.

Filters a set of values of arbitrary type to a set of numbers that can be mapped.

Parametrar

Formats values for display in DataTips. Returns a user-readable string.

Parametrar

Determines the range to estimate what the axis labels should be. The axis almost immediately calls the getLabels() method to get the real values. The axis uses the estimated values to adjust chart margins, so any difference between the estimated labels and actual labels (returned from the getLabels() method) results in scaling the labels to fit.

An axis need only return the minimum and maximum labels when returning an estimate. If the label set is fairly static, without depending on the size of the axis being rendered on screen, an axis can return the entire label set from this function, and mark the estimate as accurate.

Gets the labels text that is rendered. When Flex calls this method, the axis has already determined the minimum length of the label.

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Protects the range against invalid values for this axis type. This function is called during the update cycle of the axis to guarantee that invalid ranges are not generated. Subclasses can override this class and define logic that is appropriate to their axis type.

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Invalidates the cached labels and tick marks that represent this axis's values. Derived classes should call this function whenever values used in the calculation of labels and tick marks change.

Maps a position along the axis back to a numeric data value.

Parametrar

Converts a set of values of arbitrary type to a set of numbers that can be transformed into screen coordinates.

Parametrar

Determines how the axis handles overlapping labels. Typically, numeric ranges return true, while discrete value-based ranges do not. You can can override this property by setting it directly on the axis.

Invoked when an AxisRenderer is unable to cleanly render the labels without overlap, and would like the Axis object to reduce the set of labels. The method is passed the two labels that are overlapping.

Parametrar

Maps a set of values from data space to screen space.

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Updates the chart. This can be called multiple times per frame.