Struct ColumnStats 

pub struct ColumnStats {
    pub name: String,
    pub count: usize,
    pub nulls: usize,
    pub distinct: usize,
    pub numeric: bool,
    pub min: Option<String>,
    pub max: Option<String>,
    pub mean: Option<f64>,
    pub median: Option<f64>,
    pub quantiles: Vec<(f64, f64)>,
    pub top: Vec<(String, usize)>,
}

One column’s statistics.

Fields

name: String

The column name.

count: usize

Non-null cells.

nulls: usize

Null or empty cells.

distinct: usize

Distinct non-null values (by their text).

numeric: bool

Whether every non-null cell is a number.

min: Option<String>

The smallest value, as text (numerically for a numeric column).

max: Option<String>

The largest value, as text.

mean: Option<f64>

The mean, for a numeric column.

median: Option<f64>

The median, for a numeric column.

quantiles: Vec<(f64, f64)>

Each requested quantile and its value, for a numeric column.

top: Vec<(String, usize)>

The most common values and their counts, most common first (ties in text order).

Implementations

impl ColumnStats

pub fn summary(&self) -> String

A one-line summary: n=4 · min 5 · max 120 · mean 60, or for text n=4 · 3 distinct · top web (2), with · 1 null when there are any.

Trait Implementations

impl Clone for ColumnStats

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnStats

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

Formats the value using the given formatter.

impl PartialEq for ColumnStats

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ColumnStats