Struct SimpleVariable 

pub struct SimpleVariable {
    pub name: String,
    pub source: String,
    pub values: Vec<f64>,
    pub str_values: Vec<String>,
    pub index: Vec<StringEntities>,
    pub entities: StringEntities,
    pub is_numeric: bool,
}

A simple variable with no timing information.

Represents a column from a BIDS tabular file such as participants.tsv, sessions.tsv, or scans.tsv. Each variable has a name, source file identifier, string values, and an entity index that maps each row to its BIDS entities (e.g., which subject each value belongs to).

Values are stored as both strings and parsed floats (NaN for non-numeric). The is_numeric flag indicates whether all values are parseable as f64.

Corresponds to PyBIDS’ SimpleVariable class.

Example

use bids_variables::SimpleVariable;
use std::collections::HashMap;

let index = vec![
    HashMap::from([("subject".into(), "01".into())]),
    HashMap::from([("subject".into(), "02".into())]),
];
let var = SimpleVariable::new("age", "participants",
    vec!["25".into(), "30".into()], index);

assert_eq!(var.len(), 2);
assert!(var.is_numeric);

Fields

name: String

source: String

values: Vec<f64>

str_values: Vec<String>

index: Vec<StringEntities>

entities: StringEntities

is_numeric: bool

Implementations

impl SimpleVariable

pub fn new( name: &str, source: &str, values: Vec<String>, index: Vec<StringEntities>, ) -> Self

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn clone_with(&self, data: Option<Vec<String>>, name: Option<&str>) -> Self

Clone with optional data/name replacement.

pub fn filter(&self, filters: &StringEntities) -> Self

Filter rows matching given entity criteria.

pub fn to_rows(&self) -> Vec<StringEntities>

Convert to tabular rows.

Trait Implementations

impl Clone for SimpleVariable

fn clone(&self) -> SimpleVariable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SimpleVariable

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

Formats the value using the given formatter.