series_stats_dynamic()

  • Article
  • 09/30/2024

Applies to: ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel

Returns statistics for a series in a dynamic object.

Syntax

series_stats_dynamic(series [, ignore_nonfinite ])

Learn more about syntax conventions.

Parameters

Name Type Required Description
series dynamic ✔️ An array of numeric values.
ignore_nonfinite bool Indicates whether to calculate the statistics while ignoring non-finite values, such as null, NaN, inf, and so on. The default is false, which returns null if non-finite values are present in the array.

Returns

A dynamic property bag object with the following content:

  • min: The minimum value in the input array.
  • min_idx: The first position of the minimum value in the input array.
  • max: The maximum value in the input array.
  • max_idx: The first position of the maximum value in the input array.
  • avg: The average value of the input array.
  • variance: The sample variance of input array.
  • stdev: The sample standard deviation of the input array.
  • sum: The sum of the values in the input array.
  • len: The length of the input array.

Example

Run the query

print x=dynamic([23, 46, 23, 87, 4, 8, 3, 75, 2, 56, 13, 75, 32, 16, 29]) 
| project stats=series_stats_dynamic(x)

Output

stats
{"min": 2.0, "min_idx": 8, "max": 87.0, "max_idx": 3, "avg": 32.8, "stdev": 28.503633853548269, "variance": 812.45714285714291, "sum": 492.0, "len": 15}

The following query creates a series of the average taxi fare per minute, and then calculates statistics on these average fares:

Run the query

nyc_taxi
| make-series Series=avg(fare_amount) on pickup_datetime step 1min
| project Stats=series_stats_dynamic(Series)

Output

Stats
{"min":0,"min_idx":96600,"max":"31.779069767441861","max_idx":481260,"avg":"13.062685479531414","stdev":"1.7730590207741219","variance":"3.1437382911484884","sum":"6865747.488041711","len":525600}