cortex.polyutils.Surface.create_subsurface

Surface.create_subsurface(vertex_mask=None, polygon_mask=None)

Create subsurface for efficient operations on subset of Surface

• should specify either vertex_mask or polygon_mask

• input vertex_mask is not necessarily the final vertex_mask used

  • final vertex_mask is always derived from polygon_mask

  • this prevents dangling vertices

Parameters:

- vertex_maskboolean array

• mask of which vertices to include

- polygon_maskboolean array

• mask of which polygons to include