Struct FromFile 

pub struct FromFile<S: Scalar> { /* private fields */ }

Signal loaded from a CSV file.

Reads time-value pairs from a file and interpolates. This is useful for loading earthquake records, experimental data, etc.

File Format

The file should be in CSV format with two columns: time and value. Lines starting with ‘#’ are treated as comments.

# Time, Value
0.0, 0.0
0.1, 0.5
0.2, 1.0

Example

use numra_core::signal::{Signal, FromFile};

// Load a CSV file with time,value columns
let signal: FromFile<f64> = FromFile::load("test_data/earthquake.csv").unwrap();
let accel = signal.eval(0.15);  // Interpolated value at t=0.15
assert!(accel > 0.0 && accel < 1.0);  // Interpolated between 0.5 and 1.0

Implementations

impl<S: Scalar + FromStr> FromFile<S>

pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, String>

Load signal data from a CSV file.

Arguments

• path - Path to the CSV file

Returns

• Ok(FromFile) if the file was loaded successfully
• Err(String) if there was an error reading or parsing the file

pub fn load_with_interpolation<P: AsRef<Path>>( path: P, interp: Interpolation, ) -> Result<Self, String>

Load signal data with specified interpolation method.

pub fn from_csv_string( content: &str, interp: Interpolation, ) -> Result<Self, String>

Load from raw CSV string content.

pub fn len(&self) -> usize

Get the number of data points.

pub fn is_empty(&self) -> bool

Check if the signal is empty.

pub fn time_range(&self) -> (S, S)

Get the time range.

pub fn path(&self) -> &str

Get the file path.

pub fn as_tabulated(&self) -> &Tabulated<S>

Get the underlying tabulated data.

Trait Implementations

impl<S: Clone + Scalar> Clone for FromFile<S>

fn clone(&self) -> FromFile<S>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S: Debug + Scalar> Debug for FromFile<S>

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

Formats the value using the given formatter.

impl<S: Scalar + FromStr> Signal<S> for FromFile<S>

Available on crate feature std only.

fn eval(&self, t: S) -> S

Evaluate the signal at time t.

fn eval_derivative(&self, t: S) -> S

Compute the derivative of the signal at time t.