In this package a model type GraphRep for displaying a model as a set of bars has been implemented.
The model itself can be both a graph or a pool and the objects (modelling instances) are centrally displayed in the Modelling Area.
The values of some selected attributes are displayed on both sides on the modelling area, as defined by the developer.
This solution allows the activation/deactivation of the bar display, selecting the orientation of the modelling area (horizontal/vertical), selection of visible attributes (bars) and much more...

Link:
   Bar Display Model Type GraphRep 

Result:
The images below show horizontal and vertical orientation as well as the model type notebook, where the appearance of the model type GraphRep can be configured: