Package | mx.charts |
Class | public class LinearAxis |
Inheritance | LinearAxis NumericAxis AxisBase EventDispatcher Object |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
minimum
, maximum
,
and interval
values from the charting data
to fit all of the chart elements on the screen.
You can also explicitly set specific values for these properties.
The auto-determination of range values works as follows:
- Flex determines a minimum and maximum value that accomodates all the data being displayed in the chart.
- If the
autoAdjust
andbaseAtZero
properties are set totrue
, Flex makes the following adjustments:- If all values are positive,
Flex sets the
minimum
property to zero. - If all values are negative,
Flex sets the
maximum
property to zero.
- If all values are positive,
Flex sets the
- If the
autoAdjust
property is set totrue
, Flex adjusts values of theminimum
andmaximum
properties by rounding them up or down. - Flex checks if any of the elements displayed in the chart
require extra padding to display properly (for example, for labels).
It adjusts the values of the
minimum
andmaximum
properties accordingly. - Flex determines if you have explicitly specified any padding
around the
minimum
andmaximum
values, and adjusts their values accordingly.
The <mx:LinearAxis>
tag inherits all the properties
of its parent classes and adds the following properties:
<mx:LinearAxis Properties interval="null" maximum="null" maximumLabelPrecision="null" minimum="null" minorInterval="null" />
More examples
Learn more
Related API Elements
Property | Defined By | ||
---|---|---|---|
autoAdjust : Boolean
Specifies whether Flex rounds values. | NumericAxis | ||
baseAtZero : Boolean
Specifies whether Flex tries to keep the minimum
and maximum values rooted at zero. | NumericAxis | ||
baseline : Number [read-only]
The computed minimum value for the axis
as long as this value is greater than 0. | NumericAxis | ||
chartDataProvider : Object [write-only]
The data provider assigned to the enclosing chart. | AxisBase | ||
computedMaximum : Number
The computed maximum value represented by this axis. | NumericAxis | ||
computedMinimum : Number
The computed minimum value represented by this axis. | NumericAxis | ||
constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | ||
direction : String
Determines the direction in which the axis is rendered. | NumericAxis | ||
displayName : String
The name of the axis. | AxisBase | ||
interval : Number
Specifies the numeric difference between label values along the axis. | LinearAxis | ||
labelFunction : Function
Called to format axis values for display as labels. | NumericAxis | ||
maximum : Number
Specifies the maximum value for an axis label. | LinearAxis | ||
maximumLabelPrecision : Number
Specifies the maximum number of decimal places for representing fractional values on the labels
generated by this axis. | LinearAxis | ||
minimum : Number
Specifies the minimum value for an axis label. | LinearAxis | ||
minorInterval : Number
Specifies the numeric difference between minor tick marks along the axis. | LinearAxis | ||
minorTicks : Array [read-only]
An Array of minor tick marks generated to represent this axis. | NumericAxis | ||
padding : Number
Specifies padding that Flex adds to the calculated minimum and maximum
values for the axis when rendering the values on the screen. | NumericAxis | ||
parseFunction : Function
Specify a parseFunction to customize how
the values rendered by your chart are converted into numeric values. | NumericAxis | ||
title : String
The text for the title displayed along the axis. | AxisBase | ||
unitSize : Number [read-only]
The size of one unit of data as represented by this axis. | AxisBase |
Method | Defined By | ||
---|---|---|---|
Constructor. | LinearAxis | ||
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | EventDispatcher | ||
Triggers events that inform the range object
when the chart data has changed. | AxisBase | ||
Dispatches an event into the event flow. | EventDispatcher | ||
Filters a set of values of arbitrary type
to a set of numbers that can be mapped. | NumericAxis | ||
Formats values for display in DataTips. | NumericAxis | ||
Determines the range to estimate what the axis labels should be. | NumericAxis | ||
Gets the labels text that is rendered. | NumericAxis | ||
Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | EventDispatcher | ||
Indicates whether an object has a specified property defined. | Object | ||
Maps a position along the axis back to a numeric data value. | NumericAxis | ||
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | ||
Converts a set of values of arbitrary type
to a set of numbers that can be transformed into screen coordinates. | NumericAxis | ||
Determines how the axis handles overlapping labels. | NumericAxis | ||
Indicates whether the specified property exists and is enumerable. | Object | ||
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. | NumericAxis | ||
Each DataTransform that makes use of an axis
registers itself with that axis. | AxisBase | ||
Removes a listener from the EventDispatcher object. | EventDispatcher | ||
Sets the availability of a dynamic property for loop operations. | Object | ||
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | ||
Returns the string representation of the specified object. | Object | ||
Maps a set of values from data space to screen space. | NumericAxis | ||
Each DataTransform that makes use of an axis
registers itself with that axis. | AxisBase | ||
Updates the chart. | NumericAxis | ||
Returns the primitive value of the specified object. | Object | ||
Checks whether an event listener is registered with this EventDispatcher object or any of
its ancestors for the specified event type. | EventDispatcher |
interval | property |
interval:Number
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
Specifies the numeric difference between label values along the axis.
Flex calculates the interval if this property
is set to NaN
.
The default value is NaN
.
Implementation
public function get interval():Number
public function set interval(value:Number):void
maximum | property |
maximum:Number
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
Specifies the maximum value for an axis label.
If you set the autoAdjust
property to true
,
Flex calculates this value.
If NaN
, Flex determines the maximum value
from the data in the chart.
The default value is NaN
.
Implementation
public function get maximum():Number
public function set maximum(value:Number):void
maximumLabelPrecision | property |
maximumLabelPrecision:Number
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
Specifies the maximum number of decimal places for representing fractional values on the labels generated by this axis. By default, the axis autogenerates this value from the labels themselves. A value of 0 rounds to the nearest integer value, while a value of 2 rounds to the nearest 1/100th of a value.
Implementation
public function get maximumLabelPrecision():Number
public function set maximumLabelPrecision(value:Number):void
minimum | property |
minimum:Number
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
Specifies the minimum value for an axis label.
If NaN
, Flex determines the minimum value
from the data in the chart.
The default value is NaN
.
Implementation
public function get minimum():Number
public function set minimum(value:Number):void
minorInterval | property |
minorInterval:Number
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
Specifies the numeric difference between minor tick marks along the axis.
Flex calculates the difference if this property
is set to NaN
.
Implementation
public function get minorInterval():Number
public function set minorInterval(value:Number):void
LinearAxis | () | Constructor |
public function LinearAxis()
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
Constructor.
<?xml version="1.0"?> <!-- Simple example to demonstrate the HLOCChart control. --> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <fx:Script> <![CDATA[ import mx.collections.ArrayCollection; [Bindable] private var stockDataAC:ArrayCollection = new ArrayCollection( [ { Date: "25-Jul", Open: 40.55, High: 40.75, Low: 40.24, Close:40.31}, { Date: "26-Jul", Open: 40.15, High: 40.78, Low: 39.97, Close:40.34}, { Date: "27-Jul", Open: 40.38, High: 40.66, Low: 40, Close:40.63}, { Date: "28-Jul", Open: 40.49, High: 40.99, Low: 40.3, Close:40.98}, { Date: "29-Jul", Open: 40.13, High: 40.4, Low: 39.65, Close:39.95}, { Date: "1-Aug", Open: 39.00, High: 39.50, Low: 38.7, Close:38.6}, { Date: "2-Aug", Open: 38.68, High: 39.34, Low: 37.75, Close:38.84}, { Date: "3-Aug", Open: 38.76, High: 38.76, Low: 38.03, Close:38.12}, { Date: "4-Aug", Open: 37.98, High: 37.98, Low: 36.56, Close:36.69}, { Date: "5-Aug", Open: 36.61, High: 37, Low: 36.48, Close:36.86} ]); ]]> </fx:Script> <fx:Declarations> <!-- Define custom Stroke for the wick and ticks. --> <mx:SolidColorStroke id="s1" color="0x000000" weight="5" joints="bevel" caps="square"/> </fx:Declarations> <mx:Panel title="HLOCChart Control Example" height="100%" width="100%"> <mx:HLOCChart id="hlocchart" height="100%" width="100%" paddingRight="5" paddingLeft="5" showDataTips="true" dataProvider="{stockDataAC}"> <mx:verticalAxis> <mx:LinearAxis id="vaxis" baseAtZero="false" title="Price"/> </mx:verticalAxis> <mx:horizontalAxis> <mx:CategoryAxis id="haxis" categoryField="Date" title="Date"/> </mx:horizontalAxis> <mx:horizontalAxisRenderers> <mx:AxisRenderer axis="{haxis}" canDropLabels="true"/> </mx:horizontalAxisRenderers> <mx:series> <mx:HLOCSeries openField="Open" highField="High" lowField="Low" closeField="Close" stroke="{s1}" openTickStroke="{s1}" closeTickStroke="{s1}" openTickLength="7" closeTickLength="7" /> </mx:series> </mx:HLOCChart> </mx:Panel> </s:Application>
Thu Dec 6 2018, 01:12 PM -08:00