1. A method for developing a model profile for a printer from a selected set of test patches, including: representing a color gamut of the printer as a composite of gamut classes wherein each gamut class is comprised of a subset of printer color separations and running by a processing module the set of test patches within a one of the gamut classes wherein the set includes test patches relatively orthogonally disposed within a predetermined matrix to identify printer operation, wherein the predetermined matrix includes a cubic graphic representation and the set of test patches correspond to factorial points and a central point of a cube.