Grasshopper to JSON difficulty

[AndersDeleuran]

@PetrVacek

… I don’t know how to work with data tree in Python. Can someone give me a hint, please?

Tree operations in Python

There’s also the documentation of the DataTree class itself: https://developer.rhino3d.com/wip/api/grasshopper/html/T_Grasshopper_DataTree_1.htm And some minimal examples for reading and writing two dimensional trees: Read: """ Read the Grasshopper Datatree "FooTree" and translates it to a nested Python list """ pyList = [list(b) for b in FooTree.Branches] Write: import Grasshopper as gh def listToTree(nestedList): """ Convert a nested python iterable to a datatree """ …

@PetrVacek

Is there a simple way how to compile one single JSON from that data?

The general approach I use is to structure all my data into a Python dictionary (i.e. dict() or {}) and then json.dumps(myDict) this dictionary. Note that only primitive data types can be JSON dumped like this (i.e. not RhinoCommon geometry types etc. You can pickle a lot of these though).