Struct RailwayNetwork 

pub struct RailwayNetwork { /* private fields */ }

Railway network with spatial indexing for efficient projection

The RailwayNetwork wraps netelements with an R-tree spatial index for O(log n) nearest-neighbor searches, enabling efficient projection of large GNSS datasets.

Examples

use tp_core::{parse_network_geojson, RailwayNetwork};

// Load netelements from GeoJSON
let netelements = parse_network_geojson("network.geojson")?;

// Build spatial index
let network = RailwayNetwork::new(netelements)?;

// Query netelements
println!("Network has {} netelements", network.netelements().len());

Implementations

impl RailwayNetwork

pub fn new(netelements: Vec<Netelement>) -> Result<Self>

Create a new railway network from netelements

Builds an R-tree spatial index for efficient nearest-neighbor queries.

Arguments

• netelements - Vector of railway track segments with LineString geometries

Returns

• Ok(RailwayNetwork) - Successfully indexed network
• Err(ProjectionError) - If netelements are empty or geometries are invalid

Examples

use tp_core::{Netelement, RailwayNetwork};
use geo::LineString;

let netelements = vec![
    Netelement {
        id: "NE001".to_string(),
        geometry: LineString::from(vec![(4.35, 50.85), (4.36, 50.86)]),
        crs: "EPSG:4326".to_string(),
    },
];

let network = RailwayNetwork::new(netelements)?;

pub fn find_nearest(&self, point: &Point<f64>) -> Result<usize>

Find the nearest netelement to a given point

Uses R-tree spatial index for efficient O(log n) lookup.

Arguments

• point - Geographic point in (longitude, latitude) coordinates

Returns

Index of the nearest netelement in the network

pub fn get_by_index(&self, index: usize) -> Option<&Netelement>

Get netelement by index

Arguments

• index - Zero-based index of the netelement

Returns

• Some(&Netelement) - If index is valid
• None - If index is out of bounds

pub fn netelements(&self) -> &[Netelement]

Get all netelements

Returns a slice containing all netelements in the network.

pub fn netelement_count(&self) -> usize

Get the number of netelements in the network

Returns the total count of railway track segments indexed in this network.