Spaces:

Zeel
/

bhuvan

Build error

App Files Files Community

bhuvan / geojson.html

Zeel

Upload folder using huggingface_hub

5262418 verified almost 2 years ago

Raw

History Blame Contribute Delete

4.07 kB

	<html>
	<head>
	<link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css" />
	<script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
	<script src="https://unpkg.com/@turf/turf@6.5.0/turf.min.js"></script>
	<link rel="stylesheet" href="style.css"> <!-- Link to the external style.css file -->

	</head>

	<body>
	<header>Interactive GeoJSON Map Viewer</header>

	<div id="map"></div>

	<div id="stats">
	<h3>GeoJSON Statistics</h3>
	<div class="stat-item">
	<div class="stat-label"><i>📐</i> Area (sq meters):</div>
	<div id="area_sqm" class="value">Loading...</div>
	</div>
	<div class="stat-item">
	<div class="stat-label"><i>🌍</i> Area (hectares):</div>
	<div id="area_hectares" class="value">Loading...</div>
	</div>
	<div class="stat-item">
	<div class="stat-label"><i>📍</i> Centroid:</div>
	<div id="centroid" class="value">Loading...</div>
	</div>
	<div class="stat-item">
	<span class="stat-label"><i>Summary:</i></span>
	<div class="value" id="summary">Loading...</div>
	</div>
	</div>

	<footer>© 2024 GeoJSON Map Viewer by Sustainability Lab IIT Gandhinagar</footer>
	<script src="geostats.js"></script> <!-- Custom script for area and centroid calculations -->

	<script type="text/javascript">
	// Initialize the map
	const map = L.map('map').setView([58.4, 43.0], 11);

	// Add a base map layer
	new L.TileLayer('http://mt1.google.com/vt/lyrs=s&x={x}&y={y}&z={z}').addTo(map);

	// Function to load GeoJSON and calculate statistics
	function loadGeoJSON(url) {
	fetch(url)
	.then(response => response.json())
	.then(data => {
	const geoJsonLayer = L.geoJSON(data);
	geoJsonLayer.addTo(map);

	// Fit map to GeoJSON bounds
	map.fitBounds(geoJsonLayer.getBounds());

	// Call functions from gestats.js
	const areaStats = calculateTotalArea(data);
	const centroid = calculateCentroid(data);
	const geometryCounts = countGeometryTypes(data);
	const featureNames = getFeatureNames(data);

	// Display area, centroid, and geometry summary in HTML
	document.getElementById('area_sqm').textContent = areaStats.areaSqMeters.toFixed(2);
	document.getElementById('area_hectares').textContent = areaStats.areaHectares.toFixed(2);
	document.getElementById('centroid').textContent =
	`Lat: ${centroid.geometry.coordinates[1].toFixed(5)},
	Lng: ${centroid.geometry.coordinates[0].toFixed(5)}`;
	document.getElementById('summary').innerHTML = `
	<strong>Polygons:</strong> ${geometryCounts.Polygon} <br>
	<strong>Points:</strong> ${geometryCounts.Point} <br>
	<strong>LineStrings:</strong> ${geometryCounts.LineString} <br>
	<strong>MultiPolygons:</strong> ${geometryCounts.MultiPolygon} <br>
	<strong>Feature Names:</strong> ${featureNames.length > 0 ? featureNames.join(', ') : 'N/A'}
	`;
	})
	.catch(error => {
	console.error('Error loading GeoJSON:', error);
	alert('Failed to load GeoJSON file. Please check the URL.');
	});
	}

	// Get the GeoJSON URL from the query parameter 'geojson_url'
	const urlParams = new URLSearchParams(window.location.search);
	const geojsonUrl = urlParams.get('geojson_url');

	// Load GeoJSON if a URL is provided
	if (geojsonUrl) {
	loadGeoJSON(geojsonUrl);
	} else {
	alert('Please provide a valid GeoJSON URL in the "geojson_url" query parameter.');
	}
	</script>
	</body>
	</html>