ERROR: Mismatched compute in variable formula

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1

Hi,

I am trying to use compute stress/atom command as followed:

compute as matrix stress/atom
variable as atom sqrt((c_as[1]-c_as[2])^2+(c_as[2]-c_as[3])^2+(c_as[3]-c_as[1])^2)
dump 3 matrix custom 2000 dumpas.lammpstrj id type x y z c_as[1] c_as[2] c_as[3] c_as[4] c_as[5] c_as[6] v_as

ERROR: Mismatched compute in variable formula

could anyone tell me where I did wrong? Thanks a lot!!

lily

2

If I add those 3 lines to bench/in.lj and change matrix
to all, it works fine. Are you using the current version
of LAMMPS?

Steve