CustomGrid

CustomGrid uses an explicit list of grid cell sizes in the selected direction.

This option corresponds to tidy3d.CustomGrid (opens new window).

unit: Unit used for grid cell sizes.

• Options: m, mm (default unit), um

dl: Grid cell sizes used to construct the custom grid along the selected direction.

• Type: list of positive floating-point numbers separated by commas
• Unit: selected length unit
• Required field

Import (.txt): Load grid cell sizes from a text file.

Advanced

custom_offset: Offset applied to the custom grid.

• Type: floating-point number
• Unit: m, mm (default unit), um

NOTE

Use CustomGrid when the mesh spacing should follow an explicit user-defined sequence instead of automatic or uniform grid generation.