[ferret_users] How expand a data into spherical harmonic coefficients

[Manche Shivashankar <mancheshivashankar@xxxxxxxxx>]

Dear ferreters,

I have grace data prepared based on spherical harmonics, now I want to compare this data with sea level data. Sea level data to be consistent with grace data in spatial domain I want to convert/expand my sea level data into spherical harmonic coefficients.

Can anybody help me how to do it.

Thanks in advance

shivashankar