RE: [flexcoders] Binding chart to XML

Wed, 21 Jun 2006 13:15:48 -0700

 
 
Gotcha. I didn't read your post closely enough.
 
I'm nut sure if you're using Flex 1.5 or 2. In Flex 1.5, Charts don't support rendering XML data.
 
 
In Flex 2, there are two different types of XML supported by the player. 'Classic' XML (flash.xml.XMLNode) and ECMA Standard XML. When I say E4X, I mean ECMAScript for XML, which is the set of extensions to the language to support XML deeply.
 
Charts support rendering E4X XML, but not classic XML ( in general, unless you have really good reason, don't bother with 'classic' XML).
 
I'd change your code to look something like this:
 
var sXML:XML = <data>
    <item name="Aaa" val="6" />
    <item name="Bbb" val="46" />
    <item name="Ccc" val="16" />
</data>;
chart.dataProvider = sXML.children(); // (or = sXML..item);
 
 
 
Ely.
 
 

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Daniel Tuppeny
Sent: Wednesday, June 21, 2006 9:22 AM
To: [email protected]
Subject: RE: [flexcoders] Binding chart to XML

I wasn't deliberately using E4X (I don't really know what it is!!). I thought I was using XML! :-)
 
I added an @ and get the same issue:
 
"Property @val not found on flash.xml.XMLNode and there is no default value."
 
Any ideas?

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Ely Greenfield
Sent: 21 June 2006 16:54
To: [email protected]
Subject: RE: [flexcoders] Binding chart to XML

 
 
 
In E4X parlance, attributes are referred to by prefixing their name with @.  i.e., to get the val of the first item in your code, you would write:
 
[EMAIL PROTECTED];
 
So to have a data component (chart, list, etc) pull a value from an attribute, you need to do the same:
 
<PieSeries field="@val" />
 
Ely.
 

From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Daniel Tuppeny
Sent: Wednesday, June 21, 2006 4:11 AM
To: [email protected]
Subject: [flexcoders] Binding chart to XML

I'm trying to bind a chart to an XML document, like this:

/* Script */

var sXML:String = '\
<data>\
<item name="Aaa" val="6" />\
<item name="Bbb" val="46" />\
<item name="Ccc" val="16" />\
</data>\
';

gXMLDoc = mx.utils.XMLUtil.createXMLDocument(sXML);

pie.dataProvider = gXMLDoc.firstChild.childNodes;

/* End of Script */

And my series looks like this:

<mx:PieSeries labelPosition="callout" field="val">

But I keep getting the error: "Property val not found on
flash.xml.XMLNode and there is no default value".

What am I doing wrong?

Thanks
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