Error: Invalid fix style for fix move rotate

Dear users,

I get the following error in the logfile:

fix 14 top move rotate 0 0 0 0 0 -1 120 units box

ERROR: Invalid fix style

Can you see whats wrong with my fix move rotate command?

Here are some of the commands which precede the fix move rotate

velocity bottom set 0 0 0 sum no units box

velocity top set 0 0 0 sum no units box

fix hold1 top setforce 0 0 NULL

fix hold2 bottom setforce 0 0 NULL

unfix hold1

unfix hold2

fix 14 top move rotate 0 0 0 0 0 -1 120 units box

fix 15 bottom move rotate 0 0 0 0 0 1 120 units box

group top is the atoms on the top end of a CNT

group bottom is the atoms on the bottom end of a CNT

Possibly relevant info:

My boundary conditions are f f f

I am using LAMMPS May 2009 edition

Thanks

Daniel

……………………………………………………………………………………………………………

Daniel Mulvihill

Government of Ireland Research Fellow,

Department of Mechanical, Aeronautical, and Biomedical Enginering,

University of Limerick

Dear users,

I get the following error in the logfile:

fix 14 top move rotate 0 0 0 0 0 -1 120 units box

ERROR: Invalid fix style

Can you see whats wrong with my fix move rotate command?

invalid fix style means that you have an executable that does not
contain fix move at all or that you have non-ascii characters in that
line, e.g. the space between move and rotate is not a proper space. in
that case the parser will use "move rotate" as the fix style...

axel.

Possibly relevant info:

My boundary conditions are f f f

I am using LAMMPS May 2009 edition

this is insanity. nobody will care about things not working with a 4+
year old version.

just checked the SCM repository history. fix move was apparently added
to LAMMPS in december 2009.

Does the old version even have a src/fix_move.cpp?

You cannot use the current web pages with old versions
and expect them to be compatible.

Steve

Dear Axel and Steve,

No Steve it doesn’t seem to have a fix move.cpp!!!

Thanks for checking this Axel. It seems the problem is surely that I’m using such an old version.

Will work on making the latest version ASAP

Daniel