Add edge plotting on brain surface (connectome; supports directed graphs) #1805
Description
The Brain Surface view currently supports nodal maps only. Edge-plotting is needed so users can visualise the connectome directly on the brain surface, including directed graphs. Requested by users from NEME (Neuroimaging Methods Symposium) 2025.
Add an “Edges” mode to the Brain Surface panel that draws lines between region centroids using the selected adjacency matrix.