Struct blackjack::dataframe::DataFrame

pub struct DataFrame { /* fields omitted */ }

Struct for holding Series or [SeriesTrait] like objects. as well as adding some additional functionality by grouping them.

Methods

impl DataFrame

pub fn new() -> Self

Create a new DataFrame struct

Example

use blackjack::prelude::*;

let mut df = DataFrame::new();

pub fn read_csv<S: AsRef<OsStr> + ToString>(     path: S,     delimiter: u8 ) -> Result<Self, Box<Error>>

Read a CSV file into a DataFrame where each column represents a Series supports automatic decompression of gzipped files if they end with .gz

Example

use blackjack::prelude::*;
 
let path = format!("{}/tests/data/basic_csv.csv.gz", env!("CARGO_MANIFEST_DIR"));
let df = DataFrame::read_csv(&path, b',').unwrap();
 
assert_eq!(df["col1"].sum::<i32>(), 15);
 

Trait Implementations

impl Default for DataFrame

fn default() -> DataFrame

Returns the "default value" for a type.

impl Debug for DataFrame

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

Formats the value using the given formatter.

impl Display for DataFrame

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

Formats the value using the given formatter.

impl DataFrameBehavior for DataFrame

fn into_raw(self) -> *mut Self

Transform into a raw pointer

fn from_raw(ptr: *mut Self) -> Self

Get a DataFrame from raw pointer

impl ColumnManager for DataFrame

fn add_column(&mut self, series: Series)

Add a new series to the dataframe as a column.

fn get_column(&self, name: &str) -> Option<&Series>

Get a reference to a series by name, will also have to know the primitive type stored.

fn get_column_mut(&mut self, name: &str) -> Option<&mut Series>

Same as ColumnManager::get_column but as a mut reference.

fn n_columns(&self) -> usize

Get the number of columns

fn columns(&self) -> HashSet<&String>

Return the current dataframe's columns

impl<S: Into<String>> Index<S> for DataFrame

type Output = Series

The returned type after indexing.

fn index(&self, name: S) -> &Series

Performs the indexing (container[index]) operation.

impl<S: Into<String>> IndexMut<S> for DataFrame

fn index_mut(&mut self, name: S) -> &mut Series

Performs the mutable indexing (container[index]) operation.