A function that takes a modelbuilder model and checks it for errors

This function takes a modelbuilder model object, and checks that all specifications and constraints for modelbuilder models are met and it is a valid model

check_model(mbmodel)

Arguments

mbmodel	A model object or file name and location for the model to be loaded.

Value

An error message if the model is not properly formulated. If model is ok, it returns NULL.

Details

This function is a helper function