Calculate Averages

This function calculates the average of parent-functions' results. It can only receive, as parents, 'post-processing' nodes that are all of the same type. This means, for instance, that the function can calculate the average of several 'radius of gyration' nodes, or several 'adsorption analysis' nodes, but it can not average results of a 'radius of gyration' and a 'adsorption analysis'. All the quantities of the parent nodes that admit average will be calculated. Other quantities will be ignored (for instance non numerical results).

Allowed number of parents: N

The parents must all be 'post-processing' nodes of the same type.

This function does not require any input paramenter.