Object boundaries of a mask
Usage
at_mask_boundary(mask, width = 1L, call = rlang::caller_env())
Arguments
- mask
An annot_mask.
- width
Integer boundary thickness in pixels. Default 1.
- call
The calling environment, for error reporting.
Value
A logical matrix marking boundary pixels (where a 4-neighbour has a
different value).
See also
Other masks:
at_mask(),
at_mask_agreement(),
at_mask_derive(),
at_mask_legend(),
at_mask_preview(),
at_mask_stack(),
at_mask_stats(),
at_read_mask(),
at_read_npy(),
at_write_mask(),
at_write_masks(),
at_write_npy()
