cf
DomainAncillary.
isdimension
True if the variable is a dimension coordinate object.
See also
isauxiliary, isdomainancillary, isfieldancillary, ismeasure
isauxiliary
isdomainancillary
isfieldancillary
ismeasure
>>> f.isdimension False
cf.DomainAncillary.isauxiliary
cf.DomainAncillary.isdomainancillary