Finds the element in an object for one of the following:
getElem_id ID column
getElem_eyecol eye column
getElem_eye columns that contain information for right/left eyes
getElem_va Visual acuity
getElem_iop IOP
getElem
search a vector, the column names (data frame) or the names (list)
getElem_id(obj)getElem_eyecol(obj)
getElem_eye(obj)
getElem_va(obj)
getElem_iop(obj)
can be vector, data frame or list
vector
Other string matching functions:
recodeye()
,
sort_substr()
,
str_search