Update public/scripts/trends.js
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// public/scripts/trends.js
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// ─── Configuration for timeframes ─────────────────────────────────────────────
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// ─── Timeframe options ───────────────────────────────────────────────────────
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const tfConfig = [
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{ unit: 'hours', count: 24, label: 'Last 24 Hours' },
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{ unit: 'days', count: 7, label: 'Last 7 Days' },
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{ unit: 'weeks', count: 4, label: 'Last 4 Weeks' },
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{ unit: 'months', count: 12, label: 'Last 12 Months' },
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{ unit: 'years', count: 1, label: 'All Time' }
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{ unit:'hours', count:24, label:'Last 24 Hours' },
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{ unit:'days', count:7, label:'Last 7 Days' },
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{ unit:'weeks', count:4, label:'Last 4 Weeks' },
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{ unit:'months', count:12, label:'Last 12 Months' },
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{ unit:'years', count:1, label:'All Time' }
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];
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// ─── Helpers ──────────────────────────────────────────────────────────────────
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// Reformat EST SQL timestamp "YYYY-MM-DD HH:mm:ss" → "M/D/YY @HH:mm"
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// ─── Helpers ─────────────────────────────────────────────────────────────────
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function formatESTTimestamp(ts) {
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const [datePart, timePart] = ts.split(' ');
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const [Y, M, D] = datePart.split('-').map(n => parseInt(n, 10));
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const [h, m] = timePart.split(':');
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const YY = String(Y).slice(-2);
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return `${M}/${D}/${YY} @${h.padStart(2,'0')}:${m}`;
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const [date, time] = ts.split(' ');
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const [Y, M, D] = date.split('-').map(n=>parseInt(n,10));
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const [h, m] = time.split(':');
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return `${M}/${D}/${String(Y).slice(-2)} @${h.padStart(2,'0')}:${m}`;
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}
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function parseLocalDate(ts) {
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const [date, time] = ts.split(' ');
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const [Y, M, D] = date.split('-').map(n=>parseInt(n,10));
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const [h, m, s] = time.split(':').map(n=>parseInt(n,10));
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return new Date(Y, M-1, D, h, m, s);
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}
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// Subtract count units from a Date
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function subtract(date, count, unit) {
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const d = new Date(date);
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switch (unit) {
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case 'hours': d.setHours(d.getHours() - count); break;
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case 'days': d.setDate(d.getDate() - count); break;
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case 'weeks': d.setDate(d.getDate() - 7 * count); break;
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case 'months': d.setMonth(d.getMonth() - count); break;
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case 'years': d.setFullYear(d.getFullYear() - count); break;
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switch(unit) {
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case 'hours': d.setHours(d.getHours() - count); break;
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case 'days': d.setDate(d.getDate() - count); break;
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case 'weeks': d.setDate(d.getDate() - 7*count); break;
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case 'months': d.setMonth(d.getMonth() - count); break;
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case 'years': d.setFullYear(d.getFullYear() - count); break;
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}
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return d;
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}
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// ─── State ────────────────────────────────────────────────────────────────────
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// ─── State & Chart Ref ───────────────────────────────────────────────────────
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let readings = [];
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let chart;
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// ─── Initialize on page load ─────────────────────────────────────────────────
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document.addEventListener('DOMContentLoaded', async () => {
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// ─── On Load ─────────────────────────────────────────────────────────────────
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document.addEventListener('DOMContentLoaded', async() => {
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await loadReadings();
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setupUI();
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initChart();
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updateView();
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});
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// ─── Load readings from API ───────────────────────────────────────────────────
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// ─── Load & parse readings ───────────────────────────────────────────────────
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async function loadReadings() {
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const data = await fetch('/api/readings').then(r => r.json());
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const data = await fetch('/api/readings').then(r=>r.json());
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readings = data.map(r => ({
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...r,
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formattedTs: formatESTTimestamp(r.timestamp),
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dateObj: new Date(r.timestamp.replace(' ', 'T'))
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dateObj: parseLocalDate(r.timestamp)
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}));
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}
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// ─── UI Wiring ────────────────────────────────────────────────────────────────
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// ─── UI wiring ───────────────────────────────────────────────────────────────
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function setupUI() {
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// Timeframe slider + label
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// timeframe slider
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const slider = document.getElementById('timeframe-slider');
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const label = document.getElementById('timeframe-label');
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slider.addEventListener('input', () => {
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slider.addEventListener('input', ()=>{
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label.textContent = tfConfig[slider.value].label;
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updateView();
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});
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label.textContent = tfConfig[slider.value].label;
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// Metric toggles
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// metric toggles
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document.getElementsByName('metric').forEach(cb => {
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cb.addEventListener('change', updateView);
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});
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// Table sorting
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document.querySelectorAll('#trends-table thead th.sortable').forEach(th => {
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th.addEventListener('click', () => {
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const idx = th.cellIndex;
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const asc = !th.classList.contains('asc');
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const tbody = document.getElementById('trends-table-body');
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const rows = Array.from(tbody.rows);
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rows.sort((a, b) => {
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const aText = a.cells[idx].textContent;
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const bText = b.cells[idx].textContent;
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// table sorting
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document.querySelectorAll('#trends-table thead th.sortable').forEach(th=>{
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th.addEventListener('click', ()=>{
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const idx = th.cellIndex;
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const asc = !th.classList.contains('asc');
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const tbody = document.getElementById('trends-table-body');
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const rows = Array.from(tbody.rows);
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rows.sort((a,b)=>{
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const av = a.cells[idx].textContent;
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const bv = b.cells[idx].textContent;
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return asc
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? aText.localeCompare(bText, undefined, { numeric: true })
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: bText.localeCompare(aText, undefined, { numeric: true });
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? av.localeCompare(bv,undefined,{numeric:true})
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: bv.localeCompare(av,undefined,{numeric:true});
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});
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th.classList.toggle('asc', asc);
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rows.forEach(r => tbody.appendChild(r));
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rows.forEach(r=>tbody.appendChild(r));
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});
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});
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}
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// ─── Initialize Chart.js line chart ───────────────────────────────────────────
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// ─── Chart.js setup ──────────────────────────────────────────────────────────
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function initChart() {
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const ctx = document.getElementById('trend-chart').getContext('2d');
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chart = new Chart(ctx, {
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@ -98,69 +100,51 @@ function initChart() {
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data: { labels: [], datasets: [] },
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options: {
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scales: {
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x: { display: true, title: { display: true, text: 'Time (EST)' } },
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y: { display: true, title: { display: true, text: 'Value' } }
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x: { title: { display:true, text:'Time (EST)' } },
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y: { title: { display:true, text:'Value' } }
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},
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interaction: { mode: 'index', intersect: false },
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plugins: { legend: { position: 'top' } },
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maintainAspectRatio: false
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interaction: { mode:'index', intersect:false },
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plugins: { legend:{ position:'top' } },
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maintainAspectRatio:false
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}
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});
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}
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// ─── Update both chart & table based on UI state ─────────────────────────────
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// ─── Render chart & table ───────────────────────────────────────────────────
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function updateView() {
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// Determine timeframe cutoff
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const idx = +document.getElementById('timeframe-slider').value;
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const { unit, count } = tfConfig[idx];
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const cutoff = subtract(new Date(), count, unit);
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// Filter readings
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const filtered = readings.filter(r => r.dateObj >= cutoff);
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// Determine selected metrics
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const selected = Array.from(document.getElementsByName('metric'))
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.filter(cb => cb.checked)
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.map(cb => cb.value);
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.filter(cb=>cb.checked).map(cb=>cb.value);
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// Prepare chart labels & datasets
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const labels = filtered.map(r => r.formattedTs);
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const labels = filtered.map(r=>r.formattedTs);
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const datasets = [];
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if (selected.includes('temperature')) {
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datasets.push({
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label: 'Temperature (°F)',
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data: filtered.map(r => r.temperature),
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tension: 0.3
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});
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datasets.push({ label:'Temperature (°F)', data:filtered.map(r=>r.temperature), tension:0.3 });
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}
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if (selected.includes('humidity')) {
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datasets.push({
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label: 'Humidity (%)',
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data: filtered.map(r => r.humidity),
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tension: 0.3
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});
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datasets.push({ label:'Humidity (%)', data:filtered.map(r=>r.humidity), tension:0.3 });
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}
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if (selected.includes('heatIndex')) {
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datasets.push({
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label: 'Heat Index (°F)',
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data: filtered.map(r => r.heatIndex),
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tension: 0.3
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});
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datasets.push({ label:'Heat Index (°F)', data:filtered.map(r=>r.heatIndex), tension:0.3 });
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}
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chart.data.labels = labels;
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chart.data.datasets = datasets;
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chart.data.labels = labels;
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chart.data.datasets = datasets;
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chart.update();
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populateTable(filtered);
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}
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// ─── Populate the trends table ────────────────────────────────────────────────
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// ─── Populate the table ─────────────────────────────────────────────────────
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function populateTable(data) {
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const tbody = document.getElementById('trends-table-body');
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tbody.innerHTML = '';
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data.forEach(r => {
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data.forEach(r=>{
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const tr = document.createElement('tr');
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tr.innerHTML = `
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<td>${r.formattedTs}</td>
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