Enum TidyAgg 

pub enum TidyAgg {
    Count,
    Sum(String),
    Mean(String),
    Min(String),
    Max(String),
    First(String),
    Last(String),
    Median(String),
    Sd(String),
    Var(String),
    Quantile(String, f64),
    NDistinct(String),
    Iqr(String),
}

An aggregator expression for use in summarise.

Variants

Count

Row count for the group. No column argument.

Sum(String)

Kahan-sum of a numeric column.

Mean(String)

Arithmetic mean (NaN for empty groups).

Min(String)

Minimum value (NaN for empty groups). NaN inputs sort last.

Max(String)

Maximum value (NaN for empty groups). NaN inputs sort last.

First(String)

First row’s value (error for empty groups).

Last(String)

Last row’s value (error for empty groups).

Median(String)

Median of a numeric column.

Sd(String)

Sample standard deviation (Kahan-based).

Var(String)

Sample variance (Kahan-based).

Quantile(String, f64)

Quantile at probability p ∈ [0, 1], using linear interpolation.

NDistinct(String)

Count of distinct values (uses BTreeSet).

Iqr(String)

Interquartile range (Q3 − Q1).

Trait Implementations

impl Clone for TidyAgg

fn clone(&self) -> TidyAgg

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TidyAgg

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.