Hi,
I want to display batch classes status__c (status__C=In Progress,complete,cancelled.....) of particular batch__C of student in piechart,suppose if student has  4 batches,I have to display piechart for single batch and its status__C of batchclass object.but i am not able to repeat it,Instead I am getting all batches batchclasses status in single piechart.below is my code,can anyone helpme to solve it.

controller:
=========


public class facultydatadashboard {

public class facultydatadashboard {

public list<Faculty__c> faculty{set;get;}

public list<Batch__c> batchlist{set;get;}

public list<Batch_Class__c> batchclass{set;get;}
public list<Task__c> tasklist{set;get;}


public list<string> batchesId{set;get;}

public list<facultywrapper> facultywrapperpiechart{set;get;}
public list<facultywrapper> facultywrapperpiechart1{set;get;}
public list<facultywrapper> facultywrapperpieconstruct{set;get;}

public list<Batch_Class__c> bcllist{set;get;}

public map<id,Batch__c> batchmap{set;get;}

public facultydatadashboard(){

batchesId = new list<string>();
batchmap = new map<id,Batch__c>();

batchlist = [select id,name,Faculty__c,Faculty__r.name from Batch__c where Faculty__c='a06O000000aXV1k'];

    for(Batch__c b : batchlist){
        batchesId.add(b.id);
        batchmap.put(b.id,b);
        

       
       
    }
    
    batchclass = [select id,name,Status__c,Batch__c,Batch__r.name from Batch_Class__c where Batch__c = :batchesId];
    
    
tasklist = [select id,name,Faculty__c,Faculty__r.name,status__c from Task__c where Batch__c = :batchesId];
    




   
  
  
  

}

public list<batch__c> getbatch(){
    facultywrapperpiechart = new list<facultywrapper>();

batchlist = [select id,name,Faculty__c,Faculty__r.name from Batch__c where Faculty__c='a06O000000aXV1k'];

return batchlist ;
}

/*public list<facultywrapper> getbatchcla(){

return null;
}*/

public list<facultywrapper> getbatchclasschartofbatch(){

map<id,list<Batch_Class__c>> batchclasschart = new map<id,list<Batch_Class__c>>();
    facultywrapperpiechart1 = new list<facultywrapper>();


for(Batch_Class__c bbb : batchclass){

    if(batchclasschart.get(bbb.batch__c) == null){
         list<Batch_Class__c> b = new list<Batch_Class__c>(); 

     b.add(bbb);
     batchclasschart.put(bbb.batch__c,b);
    }
    else{
           list<Batch_Class__c> b1 = new list<Batch_Class__c>(); 
           b1=batchclasschart.get(bbb.batch__c);
           b1.add(bbb);
           batchclasschart.put(bbb.batch__c,b1);

    }
    
}

 set<id> b11 = new set<id>(); 
b11= batchclasschart.keyset();


for(Id batchid : b11){
system.debug('batchid '+batchid );



bcllist = batchclasschart.get(batchid);

system.debug('bcllist'+bcllist );

for(Batch_Class__c bcccl:bcllist ){
system.debug('bcccl'+bcccl);

        facultywrapperpiechart1.add(new facultywrapper(bcccl.status__c,batchclasschart.get(bcccl.batch__c).size(),bcccl.batch__r.name));
        }

}





 
 
return facultywrapperpiechart1;
}




public class facultywrapper{

public string name{set;get;}
public decimal data{set;get;}
public Batch_Class__c bc{set;get;}
public string batchname{set;get;}

//-------------



public facultywrapper(string n,decimal d,string bn){

this.name = n;
this.data= d;
this.batchname=bn;
} 






 
 

}






}




-----------------------------

<apex:page controller="facultydatadashboard">
 
    
    batchclasschartofbatch
    <apex:repeat value="{!batchclasschartofbatch}">
        <apex:chart height="250" width="450" data="{!batchclasschartofbatch}" > 
            <apex:pieSeries tips="true" dataField="data" labelField="name"/> 

            <apex:legend position="bottom"/>
        </apex:chart>

</apex:repeat>
</apex:page>