Dear,

In a WLS model observations with weight=0 are excluded from the estimation

and gretl acknowledges this by reporting on "missing or incomplete observations dropped".

However, the "$sample" accessor doesnt' account for these "missing" observations 

and still assigns them a 1 value. Technically these observations are not part of the estimation sample and logically they should correspond to a 0 value in the "$sample", shouldn't they?

Best,

Artur