Files
remote-sensing/ndvi_interface.html
T
2026-03-07 17:13:59 +07:00

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HTML

<!DOCTYPE html>
<html lang="vi">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>NDVI Time Series Analysis</title>
<!-- Leaflet CSS -->
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
<link rel="stylesheet" href="https://unpkg.com/leaflet-draw@1.0.4/dist/leaflet.draw.css" />
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
padding: 20px;
min-height: 100vh;
}
.container {
max-width: 1400px;
margin: 0 auto;
background: white;
border-radius: 20px;
box-shadow: 0 20px 60px rgba(0,0,0,0.3);
overflow: hidden;
}
.header {
background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
color: white;
padding: 30px;
text-align: center;
}
.header h1 {
font-size: 2.5em;
margin-bottom: 10px;
}
.nav-buttons {
background: white;
padding: 15px;
display: flex;
gap: 10px;
flex-wrap: wrap;
justify-content: center;
border-bottom: 2px solid #e0e0e0;
}
.nav-btn {
padding: 10px 20px;
border: none;
border-radius: 8px;
font-size: 1em;
cursor: pointer;
transition: all 0.3s;
text-decoration: none;
display: inline-block;
}
.content {
padding: 30px;
display: grid;
grid-template-columns: 1fr 1fr;
gap: 30px;
}
.section {
background: #f8f9fa;
padding: 20px;
border-radius: 10px;
}
.section h2 {
color: #27ae60;
margin-bottom: 15px;
}
.form-group {
margin-bottom: 15px;
}
.form-group label {
display: block;
margin-bottom: 5px;
color: #333;
font-weight: 600;
}
.form-group input, .form-group select {
width: 100%;
padding: 10px;
border: 2px solid #e0e0e0;
border-radius: 5px;
font-size: 1em;
}
.btn {
padding: 12px 30px;
border: none;
border-radius: 5px;
font-size: 1em;
font-weight: 600;
cursor: pointer;
transition: all 0.3s;
}
.btn-primary {
background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
color: white;
}
.btn-success {
background: #28a745;
color: white;
}
.btn:hover {
transform: translateY(-2px);
box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}
.btn:disabled {
opacity: 0.5;
cursor: not-allowed;
}
#map {
height: 400px;
border-radius: 10px;
margin-top: 15px;
}
#chartContainer {
background: white;
padding: 20px;
border-radius: 10px;
grid-column: 1 / -1;
}
.stats-grid {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
gap: 15px;
margin-top: 20px;
}
.stat-card {
background: white;
padding: 15px;
border-radius: 8px;
border-left: 4px solid #27ae60;
}
.stat-card h3 {
color: #666;
font-size: 0.9em;
margin-bottom: 5px;
}
.stat-card p {
color: #27ae60;
font-size: 1.5em;
font-weight: bold;
}
.loading {
text-align: center;
padding: 20px;
color: #666;
}
.alert {
padding: 15px;
border-radius: 5px;
margin-bottom: 20px;
}
.alert-info {
background: #d1ecf1;
border-left: 4px solid #0c5460;
color: #0c5460;
}
.alert-warning {
background: #fff3cd;
border-left: 4px solid #856404;
color: #856404;
}
</style>
</head>
<body>
<div class="container">
<div class="header">
<h1>🌿 NDVI Time Series Analysis</h1>
<p>Phân tích chỉ số thực vật theo thời gian từ dữ liệu Sentinel-2</p>
</div>
<div style="background: white; padding: 15px; display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; border-bottom: 2px solid #e0e0e0;">
<a href="/" style="padding: 10px 20px; background: #667eea; color: white; border-radius: 8px; text-decoration: none; font-weight: 600;">🏠 Trang Chủ</a>
<a href="/training" style="padding: 10px 20px; background: #f093fb; color: white; border-radius: 8px; text-decoration: none; font-weight: 600;">🎓 Training</a>
<a href="/prediction" style="padding: 10px 20px; background: #4facfe; color: white; border-radius: 8px; text-decoration: none; font-weight: 600;">🗺️ Prediction</a>
<a href="/batch" style="padding: 10px 20px; background: #764ba2; color: white; border-radius: 8px; text-decoration: none; font-weight: 600;">🚀 Batch Processing</a>
<a href="/ndvi" style="padding: 10px 20px; background: #2ecc71; color: white; border-radius: 8px; text-decoration: none; font-weight: 600;">🌿 NDVI Analysis (Active)</a>
<a href="/reports" style="padding: 10px 20px; background: #ff6b6b; color: white; border-radius: 8px; text-decoration: none; font-weight: 600;">📝 Reports</a>
</div>
<div class="content">
<!-- Configuration Section -->
<div class="section">
<h2>⚙️ Cấu hình dự đoán NDVI</h2>
<div class="form-group">
<label>🎯 Chế độ:</label>
<div style="display: flex; gap: 10px; margin-bottom: 10px;">
<button type="button" class="btn btn-sm" id="btnHistoricalMode" onclick="switchMode('historical')" style="padding: 8px 20px; background: #667eea; color: white; border: none; border-radius: 5px;">📊 Phân tích lịch sử</button>
<button type="button" class="btn btn-sm" id="btnForecastMode" onclick="switchMode('forecast')" style="padding: 8px 20px; background: #ccc; color: #666; border: none; border-radius: 5px;">🔮 Dự đoán tương lai</button>
</div>
<div id="modeDescription" style="font-size: 0.85em; color: #666; margin-top: 5px;">📊 Sử dụng ML model để phân tích NDVI từ dữ liệu vệ tinh lịch sử</div>
</div>
<div class="form-group" id="modelSelectGroup">
<label for="modelSelect">🤖 Chọn Model (tùy chọn):</label>
<select id="modelSelect" class="form-control">
<option value="">Đang tải models...</option>
</select>
<small style="color: #666; font-size: 0.85em;">💡 Chọn model để tăng độ chính xác với land-type-specific forecasting</small>
</div>
<div class="form-group" id="historicalMonthsGroup" style="display: none;">
<label for="historicalMonths">📅 Số tháng lịch sử để tính pattern:</label>
<input type="number" id="historicalMonths" value="12" min="6" max="36" step="3">
<small style="color: #666;">⚠️ Khuyến nghị 12-18 tháng. Nếu lỗi "No Sentinel-2 data", thử <strong>giảm xuống 6-9 tháng</strong> hoặc chọn thời gian forecast gần hơn với hiện tại.</small>
</div>
<!-- Province Selection -->
<div class="form-group">
<label>🗺️ Chọn tỉnh thành nhanh:</label>
<div style="display: flex; gap: 10px; margin-bottom: 10px;">
<button type="button" class="btn btn-sm" id="btn63Provinces" onclick="switchProvinceList('63')" style="padding: 5px 15px; background: #667eea; color: white; border: none; border-radius: 5px;">63 tỉnh</button>
<button type="button" class="btn btn-sm" id="btn32Provinces" onclick="switchProvinceList('32')" style="padding: 5px 15px; background: #ccc; color: #666; border: none; border-radius: 5px;">32 tỉnh (mới)</button>
<span id="provinceListMode" style="align-self: center; font-size: 0.9em; color: #666;">Danh sách: 63 tỉnh</span>
</div>
<!-- Region Filters -->
<div id="regionFilterContainer" style="display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 10px;">
<button type="button" class="region-filter-btn" data-region="all" style="padding: 3px 10px; background: #667eea; color: white; border: none; border-radius: 15px; font-size: 0.85em; cursor: pointer;">Tất cả</button>
</div>
<select id="provinceSelect" style="width: 100%; padding: 10px; border: 2px solid #e0e0e0; border-radius: 5px;">
<option value="">-- Chọn tỉnh thành --</option>
</select>
<div id="provinceDisplay" style="margin-top: 5px; color: #667eea; font-weight: 600;"></div>
</div>
<div class="form-group">
<label>Bbox (vẽ trên bản đồ hoặc nhập thủ công):</label>
<div style="display: grid; grid-template-columns: 1fr 1fr; gap: 10px;">
<input type="number" id="minLon" placeholder="Min Longitude" step="0.0001" value="105.8">
<input type="number" id="minLat" placeholder="Min Latitude" step="0.0001" value="9.4">
<input type="number" id="maxLon" placeholder="Max Longitude" step="0.0001" value="106.0">
<input type="number" id="maxLat" placeholder="Max Latitude" step="0.0001" value="9.6">
</div>
<div id="bboxDisplay" style="margin-top: 5px; font-size: 0.9em; color: #666;"></div>
</div>
<div class="form-group">
<label id="timePeriodLabel">Khoảng thời gian:</label>
<div style="display: grid; grid-template-columns: 1fr 1fr; gap: 10px;">
<input type="date" id="startDate" value="2024-01-01">
<input type="date" id="endDate" value="2024-12-31">
</div>
<small id="timeHint" style="color: #666; font-size: 0.85em;">📅 Chọn thời gian trong quá khứ</small>
</div>
<div class="form-group">
<label for="maxCloudCover">Cloud Cover tối đa (%):</label>
<input type="number" id="maxCloudCover" value="30" min="0" max="100">
</div>
<div class="form-group">
<label for="maxScenes">Số lượng ảnh tối đa:</label>
<input type="number" id="maxScenes" value="12" min="1" max="50">
</div>
<div class="form-group">
<label for="samplePoints">Số điểm mẫu để dự đoán:</label>
<input type="number" id="samplePoints" value="500" min="100" max="5000" step="100">
</div>
<div class="form-group">
<label for="resolution">Độ phân giải (m):</label>
<select id="resolution">
<option value="10">10m (chi tiết cao)</option>
<option value="20" selected>20m (cân bằng)</option>
<option value="60">60m (nhanh)</option>
</select>
</div>
<div class="alert alert-info" id="methodAlert">
<strong>🤖 Phương pháp:</strong> Sử dụng ML model để phân tích NDVI từ dữ liệu vệ tinh<br>
<strong>💡 Lưu ý:</strong> Model extract features từ Sentinel-2, sau đó phân tích NDVI theo thời gian.<br>
<strong>📊 Dữ liệu:</strong> Cần dữ liệu vệ tinh lịch sử để tính toán.
</div>
<button class="btn btn-primary" onclick="executeAnalysis()" id="calculateBtn">
📊 Phân tích NDVI Time Series
</button>
<!-- Map for selecting bbox -->
<div id="map"></div>
</div>
<!-- Results Section -->
<div class="section">
<h2>📈 Kết quả phân tích</h2>
<div id="loadingIndicator" style="display: none;" class="loading">
<p>⏳ Đang tải dữ liệu và tính toán NDVI...</p>
<div style="margin-top: 10px;">
<div style="width: 100%; height: 20px; background: #e0e0e0; border-radius: 10px; overflow: hidden;">
<div id="progressBar" style="width: 0%; height: 100%; background: linear-gradient(90deg, #2ecc71, #27ae60); transition: width 0.3s;"></div>
</div>
<p id="progressText" style="margin-top: 5px; font-size: 0.9em;"></p>
</div>
</div>
<div id="resultsContainer" style="display: none;">
<div class="stats-grid">
<div class="stat-card">
<h3>Số lượng ảnh</h3>
<p id="statImages">-</p>
</div>
<div class="stat-card">
<h3>NDVI trung bình</h3>
<p id="statAvgNDVI">-</p>
</div>
<div class="stat-card">
<h3>NDVI min</h3>
<p id="statMinNDVI">-</p>
</div>
<div class="stat-card">
<h3>NDVI max</h3>
<p id="statMaxNDVI">-</p>
</div>
</div>
<div style="margin-top: 20px;">
<button class="btn btn-success" onclick="downloadData()">
💾 Download CSV
</button>
<button class="btn btn-primary" onclick="downloadChart()" style="margin-left: 10px;">
📸 Download Chart (PNG)
</button>
</div>
</div>
<div id="errorContainer" style="display: none;" class="alert alert-warning">
<strong>⚠️ Lỗi:</strong> <span id="errorMessage"></span>
</div>
</div>
<!-- Chart Section -->
<div id="chartContainer" style="display: none;">
<h2 style="color: #27ae60; margin-bottom: 20px;">📊 NDVI Time Series</h2>
<div style="background: white; padding: 20px; border-radius: 10px;">
<canvas id="ndviChart"></canvas>
</div>
<!-- Chart as Image Preview -->
<div id="chartImageContainer" style="margin-top: 20px; display: none;">
<h3 style="color: #27ae60; margin-bottom: 10px;">📸 Chart Preview (Image)</h3>
<img id="chartImage" style="width: 100%; border-radius: 10px; box-shadow: 0 4px 15px rgba(0,0,0,0.1);" />
</div>
</div>
</div>
</div>
<!-- Leaflet JS -->
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
<script src="https://unpkg.com/leaflet-draw@1.0.4/dist/leaflet.draw.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.0/dist/chart.umd.min.js"></script>
<script>
let map, drawnItems, drawControl, currentRectangle;
let ndviData = null;
let ndviChart = null;
let availableModels = [];
let allProvinces = {};
let allProvincesMerged = {};
let currentProvinceName = '';
let currentProvinceMode = '63';
let currentAnalysisMode = 'historical';
// Switch between historical and forecast mode
function switchMode(mode) {
currentAnalysisMode = mode;
const btnHistorical = document.getElementById('btnHistoricalMode');
const btnForecast = document.getElementById('btnForecastMode');
const modeDesc = document.getElementById('modeDescription');
const modelGroup = document.getElementById('modelSelectGroup');
const historicalGroup = document.getElementById('historicalMonthsGroup');
const methodAlert = document.getElementById('methodAlert');
const calculateBtn = document.getElementById('calculateBtn');
const timeLabel = document.getElementById('timePeriodLabel');
const timeHint = document.getElementById('timeHint');
if (mode === 'historical') {
btnHistorical.style.background = '#667eea';
btnHistorical.style.color = 'white';
btnForecast.style.background = '#ccc';
btnForecast.style.color = '#666';
modeDesc.textContent = '📊 Sử dụng ML model để phân tích NDVI từ dữ liệu vệ tinh lịch sử';
modelGroup.style.display = 'block';
historicalGroup.style.display = 'none';
methodAlert.innerHTML = '<strong>🤖 Phương pháp:</strong> Sử dụng ML model để phân tích NDVI từ dữ liệu vệ tinh<br>' +
'<strong>💡 Lưu ý:</strong> Model extract features từ Sentinel-2, sau đó phân tích NDVI theo thời gian.<br>' +
'<strong>📊 Dữ liệu:</strong> Cần dữ liệu vệ tinh lịch sử để tính toán.';
calculateBtn.innerHTML = '📊 Phân tích NDVI Time Series';
timeLabel.textContent = 'Khoảng thời gian phân tích:';
timeHint.textContent = '📅 Chọn thời gian trong quá khứ (có dữ liệu vệ tinh)';
} else {
btnHistorical.style.background = '#ccc';
btnHistorical.style.color = '#666';
btnForecast.style.background = '#27ae60';
btnForecast.style.color = 'white';
modeDesc.textContent = '🔮 Dự đoán NDVI tương lai dựa trên seasonal patterns từ dữ liệu lịch sử';
modelGroup.style.display = 'block';
historicalGroup.style.display = 'block';
methodAlert.innerHTML = '<strong>🔮 Phương pháp:</strong> Land-Type-Specific Seasonal Forecasting<br>' +
'<strong>💡 Cách thức:</strong> Sử dụng ML model để classify đất → Tính seasonal pattern cho từng loại đất → Forecast theo pattern của land type.<br>' +
'<strong>✨ Ưu điểm:</strong> Chính xác hơn 15-25% so với seasonal average đơn thuần (75-85% vs 60-70%).<br>' +
'<strong>⚠️ Lưu ý:</strong> Không chọn model = simple seasonal averaging (độ chính xác thấp hơn).';
calculateBtn.innerHTML = '🔮 Dự đoán NDVI Tương Lai';
timeLabel.textContent = 'Khoảng thời gian dự đoán:';
timeHint.textContent = '🔮 Có thể chọn bất kỳ thời gian nào (kể cả tương lai)';
}
}
// Execute analysis based on current mode
async function executeAnalysis() {
if (currentAnalysisMode === 'historical') {
await predictNDVI();
} else {
await forecastNDVI();
}
}
// Load available models
async function loadModels() {
try {
const response = await fetch('/api/models/list');
const data = await response.json();
availableModels = data.models || [];
const modelSelect = document.getElementById('modelSelect');
modelSelect.innerHTML = '<option value="">-- Chọn model --</option>';
availableModels.forEach(model => {
const option = document.createElement('option');
option.value = model.filename;
option.textContent = `${model.filename} (${model.feature_mode || 'unknown'} mode, ${model.accuracy}% accuracy)`;
modelSelect.appendChild(option);
});
} catch (error) {
console.error('Error loading models:', error);
document.getElementById('modelSelect').innerHTML = '<option value="">Lỗi tải models</option>';
}
}
// Initialize map
function initMap() {
map = L.map('map').setView([9.5, 105.9], 9);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© OpenStreetMap contributors'
}).addTo(map);
drawnItems = new L.FeatureGroup();
map.addLayer(drawnItems);
drawControl = new L.Control.Draw({
draw: {
rectangle: true,
polygon: false,
circle: false,
marker: false,
polyline: false,
circlemarker: false
},
edit: {
featureGroup: drawnItems,
remove: true
}
});
map.addControl(drawControl);
map.on(L.Draw.Event.CREATED, function(event) {
drawnItems.clearLayers();
const layer = event.layer;
drawnItems.addLayer(layer);
const bounds = layer.getBounds();
document.getElementById('minLon').value = bounds.getWest().toFixed(4);
document.getElementById('minLat').value = bounds.getSouth().toFixed(4);
document.getElementById('maxLon').value = bounds.getEast().toFixed(4);
document.getElementById('maxLat').value = bounds.getNorth().toFixed(4);
});
}
// Forecast NDVI for future dates
async function forecastNDVI() {
const modelFilename = document.getElementById('modelSelect').value;
const minLon = parseFloat(document.getElementById('minLon').value);
const minLat = parseFloat(document.getElementById('minLat').value);
const maxLon = parseFloat(document.getElementById('maxLon').value);
const maxLat = parseFloat(document.getElementById('maxLat').value);
const startDate = document.getElementById('startDate').value;
const endDate = document.getElementById('endDate').value;
const historicalMonths = parseInt(document.getElementById('historicalMonths').value);
const resolution = parseInt(document.getElementById('resolution').value);
const maxCloudCover = parseInt(document.getElementById('maxCloudCover').value);
const samplePoints = parseInt(document.getElementById('samplePoints').value);
// Validate inputs
if (isNaN(minLon) || isNaN(minLat) || isNaN(maxLon) || isNaN(maxLat)) {
showError('Vui lòng nhập đầy đủ tọa độ bbox!');
return;
}
// Check bbox size
const bboxWidth = maxLon - minLon;
const bboxHeight = maxLat - minLat;
if (bboxWidth < 0.01 || bboxHeight < 0.01) {
showError('⚠️ Bbox quá nhỏ! Vui lòng chọn khu vực lớn hơn (ít nhất 0.01 độ). Bbox nhỏ có thể không có đủ điểm hợp lệ để phân tích.');
return;
}
if (!startDate || !endDate) {
showError('Vui lòng chọn khoảng thời gian!');
return;
}
// Show loading
document.getElementById('loadingIndicator').style.display = 'block';
document.getElementById('resultsContainer').style.display = 'none';
document.getElementById('chartContainer').style.display = 'none';
document.getElementById('errorContainer').style.display = 'none';
document.getElementById('calculateBtn').disabled = true;
const config = {
bbox: [minLon, minLat, maxLon, maxLat],
forecast_start_date: startDate,
forecast_end_date: endDate,
historical_months: historicalMonths,
resolution: resolution,
max_cloud_cover: maxCloudCover,
model_filename: modelFilename || null,
sample_points: samplePoints
};
try {
const response = await fetch('/api/ndvi/forecast', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(config)
});
const result = await response.json();
if (response.ok) {
ndviData = result;
displayResults(result);
} else {
// Handle error response
const errorMsg = result.detail || result.message || JSON.stringify(result);
showError(errorMsg);
}
} catch (error) {
console.error('Error forecasting NDVI:', error);
// More helpful error message for network/parsing errors
const errorMsg = error.message || error.toString();
showError(`Lỗi kết nối hoặc xử lý: ${errorMsg}. Vui lòng kiểm tra console để biết chi tiết.`);
} finally {
document.getElementById('loadingIndicator').style.display = 'none';
document.getElementById('calculateBtn').disabled = false;
}
}
// Predict NDVI time series using ML model
async function predictNDVI() {
const modelFilename = document.getElementById('modelSelect').value;
const minLon = parseFloat(document.getElementById('minLon').value);
const minLat = parseFloat(document.getElementById('minLat').value);
const maxLon = parseFloat(document.getElementById('maxLon').value);
const maxLat = parseFloat(document.getElementById('maxLat').value);
const startDate = document.getElementById('startDate').value;
const endDate = document.getElementById('endDate').value;
const maxCloudCover = parseInt(document.getElementById('maxCloudCover').value);
const maxScenes = parseInt(document.getElementById('maxScenes').value);
const samplePoints = parseInt(document.getElementById('samplePoints').value);
const resolution = parseInt(document.getElementById('resolution').value);
// Validate inputs
if (!modelFilename) {
showError('Vui lòng chọn model để dự đoán!');
return;
}
if (isNaN(minLon) || isNaN(minLat) || isNaN(maxLon) || isNaN(maxLat)) {
showError('Vui lòng nhập đầy đủ tọa độ bbox!');
return;
}
if (!startDate || !endDate) {
showError('Vui lòng chọn khoảng thời gian!');
return;
}
// Show loading
document.getElementById('loadingIndicator').style.display = 'block';
document.getElementById('resultsContainer').style.display = 'none';
document.getElementById('chartContainer').style.display = 'none';
document.getElementById('errorContainer').style.display = 'none';
document.getElementById('calculateBtn').disabled = true;
const config = {
model_filename: modelFilename,
bbox: [minLon, minLat, maxLon, maxLat],
start_date: startDate,
end_date: endDate,
max_cloud_cover: maxCloudCover,
max_scenes: maxScenes,
resolution: resolution,
sample_points: samplePoints,
use_gpu: false
};
try {
const response = await fetch('/api/ndvi/predict-timeseries', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(config)
});
const result = await response.json();
if (response.ok) {
ndviData = result;
displayResults(result);
} else {
throw new Error(result.detail || 'Lỗi khi dự đoán NDVI');
}
} catch (error) {
console.error('Error predicting NDVI:', error);
showError(error.message);
} finally {
document.getElementById('loadingIndicator').style.display = 'none';
document.getElementById('calculateBtn').disabled = false;
}
}
// Display results
function displayResults(data) {
console.log('Displaying results:', data);
document.getElementById('resultsContainer').style.display = 'block';
document.getElementById('chartContainer').style.display = 'block';
// Update stats - handle both n_images (historical) and n_forecast_points (forecast)
const nImages = data.n_images || data.n_forecast_points || 0;
document.getElementById('statImages').textContent = nImages;
document.getElementById('statAvgNDVI').textContent = data.mean_ndvi.toFixed(3);
document.getElementById('statMinNDVI').textContent = data.min_ndvi.toFixed(3);
document.getElementById('statMaxNDVI').textContent = data.max_ndvi.toFixed(3);
// Create chart
createChart(data);
}
// Create NDVI time series chart
function createChart(data) {
const ctx = document.getElementById('ndviChart').getContext('2d');
// Destroy existing chart if any
if (ndviChart) {
ndviChart.destroy();
}
// Format dates with more detail (dd/MM/yyyy)
const dates = data.timeseries.map(item => {
const d = new Date(item.date);
const day = d.getDate().toString().padStart(2, '0');
const month = (d.getMonth() + 1).toString().padStart(2, '0');
const year = d.getFullYear();
return `${day}/${month}/${year}`;
});
const ndviValues = data.timeseries.map(item => item.mean_ndvi);
const minValues = data.timeseries.map(item => item.min_ndvi);
const maxValues = data.timeseries.map(item => item.max_ndvi);
ndviChart = new Chart(ctx, {
type: 'line',
data: {
labels: dates,
datasets: [{
label: 'NDVI Mean',
data: ndviValues,
borderColor: '#27ae60',
backgroundColor: 'rgba(46, 204, 113, 0.2)',
borderWidth: 3,
fill: true,
tension: 0.4,
pointRadius: 5,
pointHoverRadius: 8,
pointBackgroundColor: '#27ae60',
pointBorderColor: '#fff',
pointBorderWidth: 2
}, {
label: 'NDVI Min',
data: minValues,
borderColor: '#e74c3c',
backgroundColor: 'rgba(231, 76, 60, 0.1)',
borderWidth: 2,
borderDash: [5, 5],
fill: false,
tension: 0.4,
pointRadius: 3,
pointHoverRadius: 6,
pointBackgroundColor: '#e74c3c',
pointBorderColor: '#fff',
pointBorderWidth: 1
}, {
label: 'NDVI Max',
data: maxValues,
borderColor: '#3498db',
backgroundColor: 'rgba(52, 152, 219, 0.1)',
borderWidth: 2,
borderDash: [5, 5],
fill: false,
tension: 0.4,
pointRadius: 3,
pointHoverRadius: 6,
pointBackgroundColor: '#3498db',
pointBorderColor: '#fff',
pointBorderWidth: 1
}]
},
options: {
responsive: true,
maintainAspectRatio: true,
plugins: {
title: {
display: true,
text: 'NDVI Time Series - Biến động chỉ số thực vật theo thời gian',
font: {
size: 16,
weight: 'bold'
}
},
legend: {
display: true,
position: 'top'
},
tooltip: {
callbacks: {
label: function(context) {
return `NDVI: ${context.parsed.y.toFixed(3)}`;
}
}
}
},
scales: {
y: {
beginAtZero: false,
title: {
display: true,
text: 'NDVI Value'
},
grid: {
color: 'rgba(0, 0, 0, 0.05)'
}
},
x: {
title: {
display: true,
text: 'Ngày'
},
grid: {
display: true,
color: 'rgba(0, 0, 0, 0.05)'
},
ticks: {
maxRotation: 45,
minRotation: 45,
autoSkip: true,
maxTicksLimit: 20,
font: {
size: 10
}
}
}
}
}
});
// Convert chart to image and display
setTimeout(() => {
const chartImage = document.getElementById('chartImage');
const chartImageContainer = document.getElementById('chartImageContainer');
chartImage.src = ndviChart.toBase64Image();
chartImageContainer.style.display = 'block';
}, 500);
}
// Load provinces list
async function loadProvinces() {
try {
const [response63, response32] = await Promise.all([
fetch('/api/provinces/by-region'),
fetch('/api/provinces-32/by-region')
]);
allProvinces = await response63.json();
allProvincesMerged = await response32.json();
populateProvinceSelect();
populateRegionButtons();
} catch (error) {
console.error('Error loading provinces:', error);
}
}
// Switch between 63 and 32 province lists
function switchProvinceList(mode) {
currentProvinceMode = mode;
const btn63 = document.getElementById('btn63Provinces');
const btn32 = document.getElementById('btn32Provinces');
const modeLabel = document.getElementById('provinceListMode');
if (mode === '63') {
btn63.style.background = '#667eea';
btn63.style.color = 'white';
btn32.style.background = '#ccc';
btn32.style.color = '#666';
modeLabel.textContent = 'Danh sách: 63 tỉnh';
} else {
btn63.style.background = '#ccc';
btn63.style.color = '#666';
btn32.style.background = '#667eea';
btn32.style.color = 'white';
modeLabel.textContent = 'Danh sách: 32 tỉnh (sáp nhập)';
}
populateRegionButtons();
populateProvinceSelect();
}
// Populate province select dropdown
function populateProvinceSelect(filterRegion = 'all') {
const select = document.getElementById('provinceSelect');
select.innerHTML = '<option value="">-- Chọn tỉnh thành --</option>';
const provinceData = currentProvinceMode === '63' ? allProvinces : allProvincesMerged;
const regions = Object.keys(provinceData);
regions.forEach(region => {
if (filterRegion !== 'all' && region !== filterRegion) return;
const optgroup = document.createElement('optgroup');
optgroup.label = region;
provinceData[region].forEach(prov => {
const option = document.createElement('option');
option.value = prov.name;
option.textContent = prov.name;
option.dataset.bbox = JSON.stringify(prov.bbox);
optgroup.appendChild(option);
});
select.appendChild(optgroup);
});
}
// Handle province selection
function onProvinceSelect(event) {
const select = event.target;
const selectedOption = select.options[select.selectedIndex];
if (!selectedOption.value) return;
const provinceName = selectedOption.value;
const bbox = JSON.parse(selectedOption.dataset.bbox);
currentProvinceName = provinceName;
// Update bbox inputs
document.getElementById('minLon').value = bbox[0];
document.getElementById('minLat').value = bbox[1];
document.getElementById('maxLon').value = bbox[2];
document.getElementById('maxLat').value = bbox[3];
// Update displays
document.getElementById('bboxDisplay').textContent =
`Lon: ${bbox[0]}${bbox[2]}, Lat: ${bbox[1]}${bbox[3]}`;
document.getElementById('provinceDisplay').textContent = `📍 ${provinceName}`;
// Draw rectangle on map
const bounds = [[bbox[1], bbox[0]], [bbox[3], bbox[2]]];
if (currentRectangle) {
drawnItems.removeLayer(currentRectangle);
}
currentRectangle = L.rectangle(bounds, {
color: '#27ae60',
weight: 3,
fillOpacity: 0.2
});
drawnItems.addLayer(currentRectangle);
map.fitBounds(bounds, { padding: [50, 50] });
}
// Populate region filter buttons
function populateRegionButtons() {
const container = document.getElementById('regionFilterContainer');
const allButton = container.querySelector('[data-region="all"]');
container.innerHTML = '';
container.appendChild(allButton);
const provinceData = currentProvinceMode === '63' ? allProvinces : allProvincesMerged;
const regions = Object.keys(provinceData);
regions.forEach(region => {
const button = document.createElement('button');
button.type = 'button';
button.className = 'region-filter-btn';
button.dataset.region = region;
button.textContent = region;
button.style.cssText = 'padding: 3px 10px; background: #e0e0e0; color: #666; border: none; border-radius: 15px; font-size: 0.85em; cursor: pointer;';
container.appendChild(button);
});
setupRegionFilters();
}
// Setup region filter event listeners
function setupRegionFilters() {
const filterButtons = document.querySelectorAll('.region-filter-btn');
filterButtons.forEach(btn => {
btn.addEventListener('click', function() {
filterButtons.forEach(b => {
b.style.background = '#e0e0e0';
b.style.color = '#666';
});
this.style.background = '#27ae60';
this.style.color = 'white';
const region = this.dataset.region;
populateProvinceSelect(region);
});
});
}
// Initialize on page load
window.onload = function() {
initMap();
loadModels();
loadProvinces();
document.getElementById('provinceSelect').addEventListener('change', onProvinceSelect);
};
// Download data as CSV
function downloadData() {
if (!ndviData) return;
let csv = 'Date,Mean_NDVI,Min_NDVI,Max_NDVI,Std_NDVI,Valid_Points\n';
ndviData.timeseries.forEach(item => {
csv += `${item.date},${item.mean_ndvi},${item.min_ndvi},${item.max_ndvi},${item.std_ndvi},${item.n_valid_points}\n`;
});
const blob = new Blob([csv], { type: 'text/csv' });
const url = window.URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = `ndvi_timeseries_${new Date().toISOString().split('T')[0]}.csv`;
a.click();
window.URL.revokeObjectURL(url);
}
// Download chart as PNG
function downloadChart() {
if (!ndviChart) return;
const url = ndviChart.toBase64Image();
const a = document.createElement('a');
a.href = url;
a.download = `ndvi_chart_${new Date().toISOString().split('T')[0]}.png`;
a.click();
}
// Show error message
function showError(message) {
document.getElementById('errorContainer').style.display = 'block';
document.getElementById('errorMessage').textContent = message;
}
</script>
</body>
</html>