Returns the traits that add_trait() can attach across sources, with their
kind, canonical unit, and the number and names of contributing sources.
Value
A data.frame with one row per trait:
- trait
The trait name to pass to
add_trait().- label
Human-readable label.
- kind
"numeric"or"categorical".- unit
Canonical unit for numeric traits,
NAfor categorical.- n_sources
Number of sources providing the trait.
- sources
Comma-separated source names.