GYRATION ATOMS=10-20 LABEL=rg NOPBC
GYRATION ATOMS=10-20 NUMERICAL_DERIVATIVES LABEL=rgnum NOPBC
PRINT ARG=rg STRIDE=1 FILE=colvar FMT=%8.4f
DUMPDERIVATIVES ARG=rg.*,rgnum.* FILE=derivatives FMT=%8.4f STRIDE=1
