Dear Kwant developers,

I have a finalized closed system ''sys_f'' for which I computed the local charge densities "ch_densities", which is basically a vector of length=len(sys_f.sites).

For complexity reason,  I'd like to feed a slice of sys_f  to the interpolate_density() as:

where sys_p is a slice of sys_f and ch_densities_p is the corresponding density vector.

Could you please let me know how to do it?

Best regards,

Hadi