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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@12016 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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26
doc/Section_errors.txt
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@ -65,12 +65,26 @@ that you think it should flag, please send an email to the
If you get an error message about an invalid command in your input
script, you can determine what command is causing the problem by
looking in the log.lammps file or using the "echo command"_echo.html
to see it on the screen. For a given command, LAMMPS expects certain
arguments in a specified order. If you mess this up, LAMMPS will
often flag the error, but it may read a bogus argument and assign a
value that is valid, but not what you wanted. E.g. trying to read the
string "abc" as an integer value and assigning the associated variable
a value of 0.
to see it on the screen. If you get an error like "Invalid ...
style", with ... being fix, compute, pair, etc, it means that you
mistyped the style name or that the command is part of an optional
package which was not compiled into your executable. The list of
available styles in your executable can be listed by using "the -h
command-line argument"_Section_start.html#start_7. The installation
and compilation of optional packages is explained in the "installation
instructions"_Section_start.html#start_3.
For a given command, LAMMPS expects certain arguments in a specified
order. If you mess this up, LAMMPS will often flag the error, but it
may also simply read a bogus argument and assign a value that is
valid, but not what you wanted. E.g. trying to read the string "abc"
as an integer value of 0. Careful reading of the associated doc page
for the command should allow you to fix these problems. Note that
some commands allow for variables to be specified in place of numeric
constants so that the value can be evaluated and change over the
course of a run. This is typically done with the syntax {v_name} for
a parameter, where name is the name of the variable. This is only
allowed if the command documentation says it is.
Generally, LAMMPS will print a message to the screen and logfile and
exit gracefully when it encounters a fatal error. Sometimes it will