Hi, The Melodic GUI has options for smoothing and tr; is there a flag in the commandline version of melodic for smoothing? Also, when I try to use the --tr flag, I get the error below. Thanks for any help, Vasanth Pappu MGH-NMR Center melodic -i f-concat.img -o melodic_try2_tr2 --report --tr 2 --Oall --verbose --tr There were errors parsing the command line! VS. melodic -i f-concat.img -o melodic_try2 --report --Oall --verbose Melodic Version ln(11) Melodic results will be in melodic_try2 Reading data file f-concat ... . . . --