Idx
Description
Evaluates conditional expression involving a single vector and returns a vector of integers containing the row indices of all records that meet the condition.
Syntax
vector idx(bool vbool)
Parameters
vbool
- a conditional expression on a single vector
Return
Returns a vector of integers containing the row indices of all records that meet the condition.
Examples
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"
See Also
LabTalk:Xof (function), LabTalk:Xindex1 (function), LabTalk:Xvalue (function), LabTalk:Xindex_(function)