json data (Lat,Lon) to gmap position

Problem/Motivation

As i read data from webservices it happens that i also get Positions, lat,lon from the json source.
With views_json its easy to get the data but then it seems totally impossible to get data to gmap or any geofield solution
as its not possible to add the geofield among the fields in the view.

Any ideas how to solve this?