Image metadata
Usage
at_meta(x, key = NULL, call = rlang::caller_env())Arguments
- x
An annot_image.
- key
Optional single string. When supplied, the corresponding metadata element is returned; otherwise the whole metadata list is returned.
- call
The calling environment, for error reporting.
Value
When key is NULL, a list of all metadata (including source,
backend, dtype, pixel_unit, and any backend-specific entries). When
key is supplied, the single element (or NULL if absent).