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In today's lesson we're going to be diving deep into selections. Learning this well will be transformative to your procedural workflows, not just in Geometry Nodes but across all procedural systems.

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Correction: Accumulate Field node's "Total" output does not tell you how many elements have been counted, it returns the sum total of whatever values it has counted up. When the Value is 1 as in mine, that means it added 1 per element which is why I worded it that way.

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Contents:
00:00 Intro
02:12 What are selections?
03:19 Booleans
06:16 Joining Booleans
07:55 What is an index?
08:45 Vertex Group Selection
10:14 How floats are interpolated
11:30 Float to Integer node
13:16 Selections with Empties
16:27 Indexbased Selections
19:12 Selecting a grid row
20:50 Selecting a grid column
23:06 Duplicate Index
24:55 Mesh Island Index
26:10 Index per point per island
28:11 Splines
29:05 Spline Parameter Index
30:47 Index on Spline Domain
32:50 Positionbased Selections
35:19 Normalbased Selections
37:15 Raycasted Selections
40:10 Curve Attribute Selections
42:20 Curve Corner Selections
47:08 Expand Selections
53:35 Flatten Region Exercise

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