Reports whether a raw reading stands for "no sample".
The current streamer already turns LJM's -9999 dummies into NaN; older streamers published -9999 as is, so both are treated as missing here.
-9999
NaN
Raw reading from the Scan.
Scan
true for non-finite values and for exactly -9999.
true
Reports whether a raw reading stands for "no sample".
The current streamer already turns LJM's
-9999dummies intoNaN; older streamers published-9999as is, so both are treated as missing here.