What does nPercentile do in Graphite and how it differs from percentileOfSeries? -


i read docs million times can't figure out does. npercentile in graphite , how differs percentileofseries?

npercentile: "returns n-percent of each series in serieslist."

this converts every series give single value*, n-th percentile of series (but output many series given input).

*note in graphite, single value returned series, containing many times (as many needed fill requested time-range) same single value.

percentileofseries: "percentileofseries returns single series composed of n-percentile values taken across wildcard series @ each point."

this returns single series, which, every timepoint, contains n-th percentile of different input series.


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