Below is the java script but trying to pull a "label" of a line segment saved in a json file by the nearest point in a geopoint question using the geopoint lat long it keeps returning [object Object]
/**
* Fetches 'geojson' data from a file
* @param {string} url - File url
* @returns {Promise<Object>} Promise resolving to 'geojson' data
*/
async function fetchGeoJsonData(url);
const response = await fetch(url);
if (!response.ok) {
throw new Error('Failed to fetch 'geojson' data');
}
return response.json();
}
export { fetchGeoJsonData };
// math.js
/**
* Calculates distance between two points
* @param {number} lat1 - Point 1 latitude
* @param {number} lon1 - Point 1 longitude
* @param {number} lat2 - Point 2 latitude
* @param {number} lon2 - Point 2 longitude
* @returns {number} Distance between points
*/
export function calculateDistance(lat1, lon1, lat2, lon2) {
// distance calculation logic
}
/**
* Finds the closest point on a segment to a given point
* @param {number} x0 - Point x
* @param {number} y0 - Point y
* @param {number} x1 - Segment point 1 x
* @param {number} y1 - Segment point 1 y
* @param {number} x2 - Segment point 2 x
* @param {number} y2 - Segment point 2 y
* @returns {Object} Object with x and y of closest point
*/
export function findClosestSegmentPoint(x0, y0, x1, y1, x2, y2) {
// find closest logic
return {
x: closestX,
y: closestY
};
}
// geo.js
import { fetchGeoJsonData } from './data.js';
import { calculateDistance, findClosestSegmentPoint } from './math.js';
/**
* Finds the closest line segment to a point in geojson data
*/
export async function findNearestSegment(point, geojsonUrl) {
const geoData = await fetchGeoJsonData(geojsonUrl);
// Find closest logic using imported math functions
return nearestSegment;
}
// index.js
import { findNearestSegment } from './geo.js';
const point = {
lat: 0,
lon: 0
};
const geojsonUrl = 'data.json';
try {
const nearest = await findNearestSegment(point, geojsonUrl);
console.log('Nearest segment:', nearest);
} catch (err) {
console.error('Error finding nearest segment', err);
}
