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DUMPMULTICOLVAR
This is part of the multicolvar module

Dump atom positions and multicolvar on a file.

Compulsory keywords
DATA certain actions in plumed work by calculating a list of variables and summing over them. This particular action can be used to calculate functions of these base variables or prints them to a file. This keyword thus takes the label of one of those such variables as input.
STRIDE ( default=1 ) the frequency with which the atoms should be output
FILE file on which to output coordinates
UNITS ( default=PLUMED ) the units in which to print out the coordinates. PLUMED means internal PLUMED units
PRECISION

The number of digits in trajectory file

Examples
In this examples we calculate the distances between the atoms of the first and the second group and we write them in the file MULTICOLVAR.xyz. For each couple it writes the coordinates of their geometric center and their distance.
pos:   GROUP ATOMS=220,221,235,236,247,248,438,439,450,451,534,535
neg:   GROUP ATOMS=65,68,138,182,185,267,270,291,313,316,489,583,621,711
DISTANCES GROUPA=pos GROUPB=neg LABEL=slt

DUMPMULTICOLVAR DATA=slt FILE=MULTICOLVAR.xyz

(see also DISTANCES)