Function calculate_mean_spacing 

pub fn calculate_mean_spacing(gnss_positions: &[GnssPosition]) -> f64

Calculate mean spacing between consecutive GNSS positions

Uses distance column values when available (from wheel sensors), otherwise falls back to geometric distance calculation. This is used for resampling to determine optimal sampling interval.

Arguments

• gnss_positions - Slice of GNSS positions in temporal order

Returns

Mean distance in meters between consecutive positions, or 0.0 if fewer than 2 positions

Examples

use tp_lib_core::GnssPosition;
use chrono::Utc;

let positions = vec![
    GnssPosition::new(50.8503, 4.3502, Utc::now().into(), "EPSG:4326".to_string())?,
    GnssPosition::new(50.8513, 4.3512, Utc::now().into(), "EPSG:4326".to_string())?,
];

let mean_spacing = tp_lib_core::calculate_mean_spacing(&positions);
assert!(mean_spacing > 0.0);