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