Hi 

  I want to draw a bar an pie chart in visualforce page . I know It  can be by using GooglechartApi , But I want to draw by using 

  <apex:chart> .  I have treid alot . 

   here is my code . 

<apex:page controller="OppsController">
<apex:chart data="{!BarWedgeData}" width="600" height="400">
<apex:axis type="Category" position="left" fields="name" title="Opportunities"/>
<apex:axis type="Numeric" position="bottom" fields="amount" title="Amount"/>
<apex:barSeries orientation="horizontal" axis="bottom" xField="name" yField="amount"/>
<!--<apex:pieSeries dataField="amount" labelField="name"/>-->

</apex:chart>
<apex:dataTable value="{!BarWedgeData}" var="opp">
<apex:column headerValue="Opportunity" value="{!opp.name}"/>
<!--<apex:column headerValue="Amount" value="{!opp.amount}"/>-->
</apex:dataTable>
</apex:page>

My class code is 

public class OppsController {

// Get a set of Opportunities
public List<Opportunity> opptList{get;set;}

/* public ApexPages.StandardSetController setCon {
get {
if(setCon == null) {
setCon = new ApexPages.StandardSetController(Database.getQueryLocator(
[SELECT name, type, amount, closedate FROM Opportunity]));
setCon.setPageSize(5);
}
return setCon;
}
set;
}*/

List<BarWedgeData > data {get;set;}

public OppsController() {
opptList = [SELECT name, type, amount, closedate FROM Opportunity limit 10];
data = new List<BarWedgeData>();


}
public List<BarWedgeData > getBarWedgeData () {
for(Opportunity opt : opptList)
{
//data = new List<BarWedgeData>();
data.add(new BarWedgeData (opt.name));
}
//data.add(new BarWedgeData (opt.closedate));
return data;

}


public class BarWedgeData {

public String name { get; set; }
public Double data { get; set; }

public BarWedgeData (String name) {
this.name = name;
this.data = data;
}
}

}

here I have written code to dislaay all Opportunity name in a list and a graph.

  List is displayed but graph is not displayed. please help me as soon as possible

Thanks

asish