add function to output r_n(eta) and r_n|n(eta)
add function to output r_n(eta) and r_n|n(eta)

chunshen1987/HBTcorrelation_MCafterburner,chunshen1987/HBTcorrelation_MCafterburner,chunshen1987/hadronic_afterburner_toolkit,chunshen1987/hadronic_afterburner_toolkit,chunshen1987/hadronic_afterburner_toolkit,chunshen1987/HBTcorrelation_MCafterburner,chunshen1987/hadronic_afterburner_toolkit