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reducer.sd


reducer
Since v1.0.11
Available on all platforms
See also

The reducer.sd function outputs for each tick the standard deviation of the values of Geo Time Series™ which are in the same equivalence class.

It operates on LONG and DOUBLE.

The location and elevation returned are the first encountered.

This reducer takes an additional boolean parameter to choose if Bessel correction should be applied.

It will exclude all null values when computing the result.

Signature

Examples

[ [ NEWGTS "GTS1" RENAME 10 NaN NaN NaN 1 ADDVALUE 20 NaN NaN NaN 5 ADDVALUE NEWGTS "GTS2" RENAME 10 NaN NaN NaN 4 ADDVALUE 20 NaN NaN NaN 3 ADDVALUE NEWGTS "GTS3" RENAME 10 NaN NaN NaN 3 ADDVALUE 20 NaN NaN NaN 8 ADDVALUE NEWGTS "GTS4" RENAME 10 NaN NaN NaN 3 ADDVALUE 20 NaN NaN NaN 2 ADDVALUE ] [] true reducer.sd ] REDUCE