We maintain SlicerMorph primarily for 3D landmark digitization and for basic shape analysis and visualization. Most of our users end up using R shape analysis packages for more complex analysis they want to do. It looks like, it is going to be fairly straightforward to read coordinates directly from Json as a data matrix like we currently do with fcsv. We will show it in our next user check-in (this week). But again, it will take time.
Does this mean, you guys are planning to switch to saving all markups generated in a scene to a single json file? Currently every node is saved as a distinct file. I would prefer keeping the current behavior.
Also I still do not see a units tag in the json.