Idx-func
Evaluates conditional expression involving a single vector and returns a vector of integers containing the row indices of all records that meet the condition.
vector idx(bool vbool)
vbool
Returns a vector of integers containing the row indices of all records that meet the condition.
idx(B==100) // Returns indices of values in B that equal 100 idx(B>=20 && B<=50) // Returns indices of values in B are between 20 and 50 idx(left(A,5)$ == "Chris") // Returns indices of values in A where first 5 letters are "Chris"
LabTalk:Xof (function), LabTalk:Xindex1 (function), LabTalk:Xvalue (function), LabTalk:Xindex_(function)