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Editorial Team
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Asked: 2026-06-16T00:31:45+00:00

public class TMyClass { public var value : Number; public var scale : Number;

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public class TMyClass 
{
   public var value : Number;
   public var scale : Number;
   public function TMyClass()
   {
   }

}

[Bindable]
public var myVector : Vector.<TMyClass> = new Vector.<TMyClass>();

yField="value" // the line series property
xFiled="scale"

I am trying to setup a myVector as dataprovider of a LineSeries in a Chart object.
everything going without issue on the build, but when i am executing it – there is an error that the property “value” doesn’t exists.
If I switch the dataprovider to ArrayCollection – everything is going fine.

  • Could Vector be used as dataprovider to a Chart series object ?
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1 Answer

  1. Editorial Team

    No, you cannot use the Vector class as the dataProvider. Even though dataProvider property is typed as Object, it has some expectations of what that object should be.

    The setter method for the dataProvider property of a LineSeries (and assuming other chart series objects) is defined in the class ChartElement. If you look at that setter method, it eventually gets to a series of if statements where it checks the type of the dataProvider you’ve passed in. It checks to see if the dataProvider is one of the following types:

    • Array
    • ArrayCollection
    • XMLList
    • XMLListCollection
    • ListCollectionView
    • or anything that implements the IList or ICollectionView interfaces

    If you want to use a Vector, you can wrap your Vector in class that implements IList or ICollectionView.

    People have written classes that wrap a Vector and implement the IList interface, myself included. This allows you to use Vector‘s with generally any Flex component that has a dataProvider property.

    A design goal of my implementation was to avoid all the casting that other people’s implementations were doing (never got around to doing any performance tests though).

    • my own VectorCollection implementation
    • VectorCollection from DigitalPrimates (I believe they have also contributed this implementation to the Apache Flex SDK (Flex 4.8)
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