Hi everyone,
I want to calculate the density of a periodic cell. The dimension of the cell is 30.0 30.0 51.12. I use the command to calculate the density:
fix 2 all ave/spatial 1000 1 10000 z lower 17.04 x lower 30.0 y lower 30.0 density/mass units box
I want to output the density of one bin
variable D1 equal f_2[1][1]
fix print_2 all print 10000 “${D1}” file density.txt
However, there is error:
ERROR: Variable formula fix array is accessed out-of-range
I want to know what happened?
Kind regards,
MC