SPHERICAL_HARMONIC
This is part of the symfunc module
It is only available if you configure PLUMED with ./configure –enable-modules=symfunc . Furthermore, this feature is still being developed so take care when using it and report any problems on the mailing list.

Calculate the values of all the spherical harmonic funtions for a particular value of l.

Examples
Glossary of keywords and components
Description of components
Quantity Description
rm the real parts of the spherical harmonic values with the m value given
im the real parts of the spherical harmonic values with the m value given
Compulsory keywords
L the value of the angular momentum
Options
ARG the input to this function. You can use multiple instances of this keyword i.e. ARG1, ARG2, ARG3...