Dennis

Results 2 issues of Dennis

**Describe your problem** When picking particles with spheres in napari, if no particles were picked in tomogram 1, then the `n3d spheres` layer disappears when pressing ']' to view tomogram...

I can't find if this functionality already exists but... Currently, to reproduce the "issue" 1. Place markers with which to generate a surface (i.e. a "Boundary"). 2. Generate the surface...