An array of child objects.

The DataTransform object that the element is associated with. A DataTransform object represents an association between a set of elements and a set of axis objects used to transform those elements from data space to screen coordinates and back. A chart element uses its associated DataTransform object to calculate how to render its data.

Defines the labels, tick marks, and data position for items on the x-axis. Use either the LinearAxis class or the CategoryAxis class to set the properties of the horizontal axis as a child tag in MXML or create a LinearAxis or CategoryAxis object in ActionScript.

If true, the computed range of the chart is affected by this canvas.

Defines the labels, tick marks, and data position for items on the y-axis. Use either the LinearAxis class or the CategoryAxis class to set the properties of the vertical axis as a child tag in MXML or create a LinearAxis or CategoryAxis object in ActionScript.

Constructor.

If you add a child object that already has a different display object container as a parent, the object is removed from the child list of the other display object container.

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If you add a child object that already has a different display object container as a parent, the object is removed from the child list of the other display object container.

For exemplo, the following exemplo shows three display objects, labeled a, b, and c, at index positions 0, 2, and 1, respectively:

If you add a child object that already has a different display object container as a parent, the object is removed from the child list of the other display object container.

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Adds the specified display object as a child to the current canvas.

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Fills a drawing area with a bitmap image. The bitmap can be repeated or tiled to fill the area. The fill remains in effect until you call the beginFill(), beginBitmapFill(), or beginGradientFill() method. Calling the clear() method clears the fill.

The fill is not rendered until the endFill() method is called.

The coordinates that you pass to this method are relative to the canvas's horizontal axis and vertical axis.

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  matrix = new flash.geom.Matrix(); 
  matrix.rotate(Math.PI/4);
  

Specifies a simple one-color fill that subsequent calls to other Graphics methods (such as lineTo() or drawCircle()) use when drawing. The fill remains in effect until you call the beginFill(), beginBitmapFill(), or beginGradientFill() method. Calling the clear() method clears the fill.

The fill is not rendered until the endFill() method is called.

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Clears the canvas of all graphical elements.

You do not call this method directly. Flex calls the commitProperties() method when you use the addChild() method to add a component to a container, or when you call the invalidateProperties() method of the component. Calls to the commitProperties() method occur before calls to the measure() method. This lets you set property values that might be used by the measure() method.

Some components have properties that affect the number or kinds of child objects that they need to create, or have properties that interact with each other, such as the horizontalScrollPolicy and horizontalScrollPosition properties. It is often best at startup time to process all of these properties at one time to avoid duplicating work.

Draws a curve using the current line style from the current drawing position to (anchorX, anchorY) and using the control point that (controlX, controlY) specifies. The current drawing position is then set to (anchorX, anchorY). If the movie clip in which you are drawing contains content created with the Flash drawing tools, calls to the curveTo() method are drawn underneath this content. If you call the curveTo() method before any calls to the moveTo() method, the default of the current drawing position is (0, 0). If any of the parameters are missing, this method fails and the current drawing position is not changed.

The curve drawn is a quadratic Bezier curve. Quadratic Bezier curves consist of two anchor points and one control point. The curve interpolates the two anchor points and curves toward the control point.

The coordinates that you pass to this method are in terms of chart data rather than screen coordinates.

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Draws a circle. You must set the line style, fill, or both before you call the drawCircle() method, by calling the linestyle(), lineGradientStyle(), beginFill(), beginGradientFill(), or beginBitmapFill() method.

The coordinates that you pass to this method are in terms of chart data rather than screen coordinates.

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Draws an ellipse. You must set the line style, fill, or both before you call the drawEllipse() method, by calling the linestyle(), lineGradientStyle(), beginFill(), beginGradientFill(), or beginBitmapFill() method.

The coordinates that you pass to this method are in terms of chart data rather than screen coordinates.

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Draws a rectangle. You must set the line style, fill, or both before you call the drawRect() method, by calling the linestyle(), lineGradientStyle(), beginFill(), beginGradientFill(), or beginBitmapFill() method.

The coordinates that you pass to this method are in terms of chart data rather than screen coordinates.

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The coordinates that you pass to this method are in terms of chart data rather than screen coordinates.

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Applies a fill to the lines and curves that were added since the last call to the beginFill(), beginGradientFill(), or beginBitmapFill() method. Flash uses the fill that was specified in the previous call to the beginFill(), beginGradientFill(), or beginBitmapFill() method. If the current drawing position does not equal the previous position specified in a moveTo() method and a fill is defined, the path is closed with a line and then filled.

Informs the canvas that the underlying data in the data provider has changed. This method triggers calls to the updateMapping() and updateTransform() methods on the next call to the commitProperties() method.

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Invalidation is a useful mechanism for eliminating duplicate work by delaying processing of changes to a component until a later screen update. For exemplo, if you want to change the width and height, it would be wasteful to update the component immediately after you change the width and then update again with the new height. It is more efficient to change both properties and then render the component with its new size once.

Invalidation methods rarely get called. In general, setting a property on a component automatically calls the appropriate invalidation method.

Specifies a line style that Flash uses for subsequent calls to other Graphics methods (such as lineTo() or drawCircle()) for the object. The line style remains in effect until you call the lineGradientStyle() method or the lineStyle() method with different parameters. You can call lineStyle() in the middle of drawing a path to specify different styles for different line segments within the path.

Note: Calls to the clear() method set the line style back to undefined.

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Draws a line using the current line style from the current drawing position to (x, y); the current drawing position is then set to (x, y). If the display object in which you are drawing contains content that was created with the Flash drawing tools, calls to the lineTo() method are drawn underneath the content. If you call lineTo() before any calls to the moveTo() method, the default position for the current drawing is (0, 0). If any of the parameters are missing, this method fails and the current drawing position is not changed.

The coordinates that you pass to this method are in terms of chart data rather than screen coordinates.

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Moves the current drawing position to (x, y). If any of the parameters are missing, this method fails and the current drawing position is not changed.

The coordinates that you pass to this method are in terms of chart data rather than screen coordinates.

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Removes all data children (DisplayObject instances) of the canvas.

The garbage collector reallocates unused memory space. When a variable or object is no longer actively referenced or stored somewhere, the garbage collector sweeps through and wipes out the memory space it used to occupy if no other references to it exist.

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The garbage collector reallocates unused memory space. When a variable or object is no longer actively referenced or stored somewhere, the garbage collector sweeps through and wipes out the memory space it used to occupy if no other references to it exist.

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Removes any item from the provided cache whose field property is NaN. Derived classes can call this method from their updateFilter() implementation to remove any ChartItems filtered out by the axes.

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Updates the position of any child to current canvas.

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          var lbl:Label = new Label();
          lbl.text = "Last Month";
          canvas.addChild(lbl);
          canvas.updateDataChild(lbl,"Feb",200);
     

You do not call this method directly. Flex calls the updateDisplayList() method when the component is added to a container using the addChild() method, and when the component's invalidateDisplayList() method is called.

If the component has no children, this method is where you would do programmatic drawing using methods on the component's Graphics object such as graphics.drawRect().

If the component has children, this method is where you would call the move() and setActualSize() methods on its children.

Components may do programmatic drawing even if they have children. In doing either, you should use the component's unscaledWidth and unscaledHeight as its bounds.

It is important to use unscaledWidth and unscaledHeight instead of the width and height properties.

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