GHPython: Construct Multiple Layered Data Tree by Filtering

Hi everyone,

I’ve looked very hard to try and solve my challenge, and found a lot of good posts. But I cannot find this issue or tips to solve it.

I want to build a data tree with about 4 layers. In the ghpython component, there are 4 inputs, each one is part of a branch layer hierarchy, example:
Devs = {0}
Plots = {0,0}
Buildings = {0,0,0}
Massing = {0,0,0,0}

The goal is to be able to see what items are contained below each higher-order element. The tree can then be used for calculations of (# items, M2, GFA, etc.)

I want to organize the items on each lower (successive) layer underneath the item which contains them. example:
Dev[1] contains Plots[3,4,5] contains Buildings[10,11,15] contains Massing[90,91,92]

Problems:
My problem is that the data is duplicating and not filtering

• I might be using the wrong filtering techniques (ex. Curve.Contain might be bad method)
• I might be structuring the for loops incorrectly
• I might be constructing the dataTree incorrectly

dataTree by containment Filter885×1096 130 KB

MassDataMaker_0.4_SentOut.gh (31.3 KB)

I’ve already read through these important posts, and more

• GH SDK DataTree(Of T) Class
• GH SDK GH_Path Class
• ghpthon.treehelpers - Gist on Github
• Discourse Tree Operations in Python
• Discourse C# Create Data Tree
• Discourse C# 3 Layer Data Tree
• James Ramsden C# Data Trees in GH
• Grasshopper3D Convert Array to datatree

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