correctly spell "through"

interface.

See the sample codes in examples/COUPLE/simple for examples of C++ and

C and Fortran codes that invoke LAMMPS thru its library interface.

C and Fortran codes that invoke LAMMPS through its library interface.

Other examples in the COUPLE directory use coupling ideas discussed on

the "Howto couple"_Howto_couple.html doc page.

{Invalid use of library file() function} :dt

This function is called thru the library interface.  This

This function is called through the library interface.  This

error should not occur.  Contact the developers if it does. :dd

{Invalid value in set command} :dt

The lammps_vasp dir shows how to couple LAMMPS as a client code

running MD timestepping to VASP acting as a server providing quantum

DFT forces, thru a Python wrapper script on VASP.

DFT forces, through a Python wrapper script on VASP.

Here is how to launch a client and server code together for any of the

4 modes of message exchange that the "message"_message.html command

(1), or it could be a stand-alone code, invoked by a system() call

made by the command (assuming your parallel machine allows one or more

processors to start up another program).  In the latter case the

stand-alone code could communicate with LAMMPS thru files that the

stand-alone code could communicate with LAMMPS through files that the

command writes and reads.

See the "Modify command"_Modify_command.html doc page for info on how

input script.

Via these functions, the calling code can read or generate a series of

LAMMPS commands one or multiple at a time and pass it thru the library

LAMMPS commands one or multiple at a time and pass it through the library

interface to setup a problem and then run it in stages.  The caller

can interleave the command function calls with operations it performs,

calls to extract information from or set information within LAMMPS, or