rcpicker *results(char *prefix, int seq)
{
   TString resultsfile;
   TString rootfile;
   TString logfile;
   TString sprefix(prefix);

   if (sprefix == "setup1") {
      resultsfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/setup1_%3.3d_results.root",seq);
      rootfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/setup1_%3.3d_rocking_curves.root",seq);
      logfile = "chess-6-2012/setup1/setup1";
   }
   else if (sprefix == "sinmat100") {
      resultsfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/sinmat100_%3.3d_results.root",seq);
      rootfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/sinmat100_%3.3d_rocking_curves.root",seq);
      logfile = "chess-6-2012/sinmat100/sinmat100";
   }
   else if (sprefix == "sinmat50") {
      resultsfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/sinmat50_%3.3d_results.root",seq);
      rootfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/sinmat50_%3.3d_rocking_curves.root",seq);
      logfile = "chess-6-2012/sinmat50/sinmat50";
   }
   else if (sprefix == "sinmat25") {
      resultsfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/sinmat25_%3.3d_results.root",seq);
      rootfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/sinmat25_%3.3d_rocking_curves.root",seq);
      logfile = "chess-6-2012/sinmat25/sinmat25";
   }
   else if (sprefix == "sinmat25P") {
      resultsfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/sinmat25P_%3.3d_results.root",seq);
      rootfile.Form("root://nod15.phys.uconn.edu//pnfs/phys.uconn.edu/data/Gluex/beamline/diamonds/chess-6-2012/results/sinmat25P_%3.3d_rocking_curves.root",seq);
      logfile = "chess-6-2012/sinmat25P/sinmat25P";
   }
   else {
      std::cerr << "rcp_setup error - dataset \"" << sprefix
                << " is not known." << std::endl;
      return 0;
   }

   TFile *resfile = TFile::Open(resultsfile);
   rcpicker *rcp = new rcpicker(prefix,seq,rootfile.Data(),logfile.Data());
   resfile->cd();
   return rcp;
}