reducer.percentile
reducer
Pushes onto the stack an AGGREGATOR which returns the N^th^ percentile of the values for each tick.
The returned location and elevation are those of the chosen value or are interpolated in the same way the value is.
The percentile is computed according to the formulae in Hyndman, Rob & Fan, Yanan. (1996). Sample Quantiles in Statistical Packages. The American Statistician. Most used types are 1 when no interpolation is wanted and 7 when interpolation is wanted.
See also
Signatures
Examples
//each GTS has a value for each tick.
[
NEWGTS "GTS1" RENAME
10 42.0 42.0 42.0 1.0 ADDVALUE
20 NaN NaN NaN 5.0 ADDVALUE
NEWGTS "GTS2" RENAME
10 NaN NaN NaN 4.0 ADDVALUE
20 44.0 44.0 44.0 3.0 ADDVALUE
NEWGTS "GTS3" RENAME
10 NaN NaN NaN 3.0 ADDVALUE
20 NaN NaN NaN 8.0 ADDVALUE
NEWGTS "GTS4" RENAME
10 NaN NaN NaN 3.0 ADDVALUE
20 NaN NaN NaN 2.0 ADDVALUE
] 'GTSlist' STORE
[
$GTSlist
[]
70.0 reducer.percentile
] REDUCE