void pl_all_2D(Int_t iOpt=0, Int_t iNSt=6)
{
  //  TCanvas *can = new TCanvas("can22","can22");
  //  can->Divide(2,2); 
  //  TCanvas *can = new TCanvas("can","can",48,55,700,900);
  TCanvas *can = new TCanvas("can","can",48,56,900,900);
  can->Divide(5,7,0.01,0.01); 
  //  can->Divide(2,2,0,0); 
  Float_t lsize=0.07;

 gPad->SetFillColor(0);
 gStyle->SetPalette(1);
 gStyle->SetLabelSize(lsize);

 //gStyle->SetOptStat(kTRUE);
 //gROOT->cd();
 //gROOT->SetDirLevel(2);

 TH2 *h;
 TH2 *h2;
 const Int_t       iType[6]={0,9,7,5,6,8};
 const Int_t  iSmNum[6]={5,1,1,1,1,1};
 const Int_t iRpcNum[6]={5,2,1,1,2,8};
 TString cOpt; 

 switch(iOpt){
 case 0: 
   cOpt="Size";
   break;
 case 1:
   cOpt="Pos";
   break;
 case 2:
   cOpt="TOff";
   break;
 case 3:
   cOpt="Tot";
   break;
 case 4:
   cOpt="AvWalk";
   break;
 case 5:
   cOpt="AvLnWalk";
   break;
 case 6:
   cOpt="Mul";
   break;
 case 7:
   cOpt="Trms";
   break;
 case 8:
   cOpt="DelPos";
   break;
 case 9:
   cOpt="DelTOff";
   break;
 case 10:
   cOpt="DelMatPos";
   break;
 case 11:
   cOpt="DelMatTOff";
   break;
 default:
   ;
 }

 Int_t iCanv=0;
 // if (h!=NULL) h->Delete();

 for(Int_t iSt=0; iSt<iNSt; iSt++){
   // cout << "plot station "<<iSt<<" with "<< iSmNum[iSt] <<" modules of "<<iRpcNum[iSt]<<" Rpcs each"<<endl;
  for(Int_t iSm=0; iSm<iSmNum[iSt];iSm++){
    //cout << "plot module at station "<<iSt<<" with "<< iSmNum[iSt] <<" modules of "<<iRpcNum[iSt]<<" Rpcs each"<<endl;
    for(Int_t iRp=0; iRp<iRpcNum[iSt];iRp++){
      //cout << "plot rpc at station "<<iSt<<" with "<< iSmNum[iSt] <<" modules of "<<iRpcNum[iSt]<<" Rpcs each"<<endl;
      can->cd(iCanv+1); iCanv++;
      gROOT->cd();
      TString hname=Form("cl_SmT%01d_sm%03d_rpc%03d_%s",iType[iSt],iSm,iRp,cOpt.Data());
      h=(TH2 *)gROOT->FindObjectAny(hname);
      if (h!=NULL) {
	if (iOpt == 4 || iOpt==5 ) {
	  gPad->SetLogz();
	}
	h->Draw("colz");
      }else{cout<<"Histogram "<<hname<<" not existing. "<<endl;}
      if(iRp==10) break;
    }
  }
 }
 can->SaveAs(Form("pl_all_%s.pdf",cOpt.Data()));

}