[gmx-users] calculation of angle between two groups

[niaz poorgholami]

Dear gmx users
I did the simulations of carbon nanotube+surfactant+water molecules and I
would like to calculate probability distribution of the angle formed
between the vector of the surfactant molecules and CNT. Is there any
tools or programs in gromacs to do that?I have tried g_sgangle program but
it gave me the error.any suggestion would be highly appreciated.
Best regards