| Pacchetto | mx.charts |
| Classe | public class LogAxis |
| Ereditarietà | LogAxis  NumericAxis AxisBase EventDispatcher Object |
| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | 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.
A LogAxis object cannot correctly render negative values,
as Log10() of a negative number is undefined.
Sintassi MXML
Mostra sintassi MXML
Nascondi sintassi MXMLThe <mx:LogAxis> tag inherits all the properties
of its parent classes and adds the following properties:
<mx:LogAxis
Properties
interval="10"
maximum="null"
maximumLabelPrecision="null"
minimum="null"
/>
Altri esempi
Elementi API correlati
Proprietà pubbliche
| Proprietà | Definito da | ||
|---|---|---|---|
 | 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 [sola lettura]
The computed minimum value for the axis
as long as this value is greater than 0. | NumericAxis | |
| chartDataProvider : Object [sola scrittura]
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
Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto. | 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 multiplier label values along the axis. | LogAxis | ||
| labelFunction : Function
Called to format axis values for display as labels. | NumericAxis | |
| maximum : Number
Specifies the maximum value for an axis label. | LogAxis | ||
| maximumLabelPrecision : Number
Specifies the maximum number of decimal places for representing fractional
values on the labels generated by this axis. | LogAxis | ||
| minimum : Number
Specifies the minimum value for an axis label. | LogAxis | ||
| minorTicks : Array [sola lettura]
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 [sola lettura]
The size of one unit of data as represented by this axis. | AxisBase | |
Proprietà protette
Metodi pubblici
| Metodo | Definito da | ||
|---|---|---|---|
LogAxis()
Constructor. | LogAxis | ||
| addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registra un oggetto listener di eventi con un oggetto EventDispatcher, in modo che il listener riceva la notifica di un evento. | EventDispatcher | |
|
Triggers events that inform the range object
when the chart data has changed. | AxisBase | |
|
Invia un evento nel flusso di eventi. | 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 | |
|
Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento. | EventDispatcher | |
|
Indica se per un oggetto è definita una proprietà specifica. | Object | |
|
Maps a position along the axis back to a numeric data value. | NumericAxis | |
|
Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro. | 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 | |
|
Indica se la proprietà specificata esiste ed è enumerabile. | 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 | |
|
Rimuove un listener dall'oggetto EventDispatcher. | EventDispatcher | |
|
Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche. | Object | |
|
Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate. | Object | |
|
Restituisce la rappresentazione in formato stringa dell'oggetto specificato. | 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 | |
|
Restituisce il valore di base dell'oggetto specificato. | Object | |
|
Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato. | EventDispatcher | |
Metodi protetti
Eventi
Descrizione delle proprietà
interval | proprietà |
interval:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
Specifies the multiplier label values along the axis.
A value of 10 generates labels at 1, 10, 100, 1000, etc.,
while a value of 100 generates labels at 1, 100, 10000, etc.
Flex calculates the interval if this property
is set to NaN.
Intervals must be even powers of 10, and must be greater than or equal to 10.
The LogAxis rounds the interval down to an even power of 10, if necessary.
Il valore predefinito è 10.
Implementazione
public function get interval():Number public function set interval(value:Number):voidmaximum | proprietà |
maximum:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
Specifies the maximum value for an axis label.
If NaN, Flex determines the maximum value
from the data in the chart.
The maximum value must be an even power of 10.
The LogAxis rounds an explicit maximum value
up to an even power of 10, if necessary.
Il valore predefinito è NaN.
Implementazione
public function get maximum():Number public function set maximum(value:Number):voidmaximumLabelPrecision | proprietà |
maximumLabelPrecision:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | 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 round to the nearest integer value, while a value of 2 rounds to the nearest 1/100th of a value.
Implementazione
public function get maximumLabelPrecision():Number public function set maximumLabelPrecision(value:Number):voidminimum | proprietà |
minimum:Number| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | 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 minimum value must be an even power of 10.
The LogAxis will round an explicit minimum value
downward to an even power of 10 if necessary.
Il valore predefinito è NaN.
Implementazione
public function get minimum():Number public function set minimum(value:Number):voidDescrizione della funzione di costruzione
LogAxis | () | Funzione di costruzione |
public function LogAxis()| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 3 |
| Versioni runtime: | Flash Player 9, AIR 1.1 |
Constructor.
LogAxisExample.mxml
<?xml version="1.0"?>
<!-- Simple example to demonstrate the LogAxis class. -->
<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 expensesAC:ArrayCollection = new ArrayCollection( [
{ Month: "Jan", Profit: 20000, Expenses: 1500, Amount: 450 },
{ Month: "Feb", Profit: 1000, Expenses: 15000, Amount: 600 },
{ Month: "Mar", Profit: 15000, Expenses: 5000, Amount: 300 },
{ Month: "Apr", Profit: 1800, Expenses: 1200, Amount: 900 },
{ Month: "May", Profit: 2400, Expenses: 575, Amount: 500 } ]);
]]>
</fx:Script>
<mx:Panel title="LogAxis Example" height="100%" width="100%">
<mx:LineChart id="linechart" height="100%" width="100%"
paddingLeft="5" paddingRight="5"
showDataTips="true" dataProvider="{expensesAC}">
<mx:horizontalAxis>
<mx:CategoryAxis categoryField="Month"/>
</mx:horizontalAxis>
<mx:verticalAxis>
<mx:LogAxis interval="10"/>
</mx:verticalAxis>
<mx:series>
<mx:LineSeries yField="Profit" form="curve" displayName="Profit"/>
<mx:LineSeries yField="Expenses" form="curve" displayName="Expenses"/>
<mx:LineSeries yField="Amount" form="curve" displayName="Amount"/>
</mx:series>
</mx:LineChart>
<mx:Legend dataProvider="{linechart}"/>
</mx:Panel>
</s:Application>
Tue Jun 12 2018, 02:44 PM Z