2c:null 2d:["$","title",null,{"children":"Holiday Souvenir | Tyler Randall - Data Visualization | Observable"}] 32:T3003,//CELL 5: GPX track data pts = [ [37.7576067,-25.2045109,279.8,"12:17"], [37.7575413,-25.2044722,272.3,"12:17"], [37.7575146,-25.2044571,269.7,"12:18"], [37.75752,-25.2044646,269.2,"12:18"], [37.7574202,-25.2043435,265.5,"12:18"], [37.7572875,-25.2040865,264.9,"12:18"], [37.7571612,-25.2038878,258.1,"12:18"], [37.7570578,-25.2035927,248.9,"12:19"], [37.7569123,-25.2034215,243.5,"12:19"], [37.7567183,-25.2032256,240.6,"12:19"], [37.7565079,-25.2030781,240.1,"12:20"], [37.756328,-25.2029455,236.5,"12:20"], [37.7560833,-25.2028204,237.7,"12:20"], [37.7558401,-25.2027026,236.2,"12:21"], [37.7556046,-25.2026039,226.9,"12:21"], [37.7553961,-25.2027599,224.8,"12:21"], [37.755262,-25.2029453,221.7,"12:21"], [37.7551197,-25.2031693,218.4,"12:22"], [37.7549417,-25.2033345,217.0,"12:22"], [37.7548297,-25.2036263,216.1,"12:22"], [37.7546554,-25.2034418,213.0,"12:23"], 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-25.2032814, title: "Bar", desc: "A small bar that was a great way to end the day", emoji: "🍻", feeling: "Accomplished", photos: 12, elevation: 227, img: await FileAttachment("Bar.png").url() }, { idx: 120, lat: 37.76109128263066, lon: -25.196677874630566, title: "Salto do Prego", desc: "A beautiful waterfall that is a part of the most popular hike on the island.", emoji: "🌊", feeling: "Bliss", photos: 31, elevation: 168, img: await FileAttachment("Salto do Prego.png").url() }, { idx: 210, lat: 37.7500203, lon: -25.2024047, title: "Village Between the Mountains", desc: "Little Village tucked between the mountains, was supposed to be the beginning of the hike.", emoji: "🏠", feeling: "Freedom", photos: 8, elevation: 59, img: await FileAttachment("Village .png").url() }, { idx: 260, lat: 37.751, lon: -25.2032814, title: "Coastal trail ascent", desc: "Top of the switchbacks with a great view over the ocean through the mountains", emoji: "🌄", feeling: "Tired", photos: 19, elevation: 216, img: await FileAttachment("Coastal Ascent.png").url() } ]34:T843,//CELL 10: Controls UI viewof controls = { const form = html`

12:17

` let timer = null, playing = false, idx = 0 function tick() { mutable animIndex = idx form.querySelector('#scrubber').value = idx form.querySelector('#timeLabel').textContent = pts[idx][3] idx++ if (idx >= pts.length) { clearInterval(timer); playing = false form.querySelector('#playBtn').textContent = '▶ Animate' } } form.querySelector('#playBtn').onclick = () => { if (playing) { clearInterval(timer); playing = false form.querySelector('#playBtn').textContent = '▶ Animate' } else { if (idx >= pts.length) idx = 0 playing = true form.querySelector('#playBtn').textContent = '⏸ Pause' timer = setInterval(tick, 28) } } form.querySelector('#resetBtn').onclick = () => { clearInterval(timer); playing = false; idx = 0 mutable animIndex = 0 form.querySelector('#playBtn').textContent = '▶ Animate' form.querySelector('#scrubber').value = 0 form.querySelector('#timeLabel').textContent = '12:17' } form.querySelector('#scrubber').oninput = (e) => { clearInterval(timer); playing = false form.querySelector('#playBtn').textContent = '▶ Animate' idx = +e.target.value mutable animIndex = idx form.querySelector('#timeLabel').textContent = pts[idx][3] } return form } 35:T1e36,mapInstance = { const container = html`

` const mapDiv = document.createElement('div') mapDiv.style.cssText = 'width:100%;height:100%;' container.appendChild(mapDiv) const stats = document.createElement('div') stats.style.cssText = `position:absolute;top:12px;left:12px;z-index:10; background:rgba(255,255,255,0.92);border-radius:10px;padding:10px 14px; font-family:sans-serif;font-size:12px;line-height:1.9; box-shadow:0 2px 8px rgba(0,0,0,0.15);border:1px solid rgba(0,0,0,0.07);` stats.innerHTML = `

🌿 São Miguel, Azores

📅 April 20, 2026

📏 ~6.2 km | ⏱ 2h 15m

⛰ Max: 326 m | Min: 59 m

📷 4 photo stops

` container.appendChild(stats) const legend = document.createElement('div') legend.style.cssText = `position:absolute;bottom:30px;left:12px;z-index:10; background:rgba(255,255,255,0.92);border-radius:10px;padding:10px 14px; font-family:sans-serif;font-size:11px;line-height:2; box-shadow:0 2px 8px rgba(0,0,0,0.15);border:1px solid rgba(0,0,0,0.07);` legend.innerHTML = `

Elevation

${[["#E24B4A","High (>240 m)"],["#BA7517","Mid (160–240 m)"], ["#378ADD","Low (100–160 m)"],["#1D9E75","Valley (<100 m)"]].map(([c,l]) => `

${l}

`).join('')}

📷 Photo stop

` container.appendChild(legend) const ctrlBar = document.createElement('div') ctrlBar.style.cssText = `position:absolute;bottom:0;left:0;right:0;z-index:10; background:rgba(255,255,255,0.92);padding:8px 14px; display:flex;align-items:center;gap:10px;font-family:sans-serif;font-size:13px;` const playBtn = document.createElement('button') playBtn.textContent = '▶ Animate' playBtn.style.cssText = `padding:5px 16px;border-radius:20px;border:none; background:#1D9E75;color:#fff;font-size:13px;cursor:pointer;font-weight:500;` const scrubber = document.createElement('input') scrubber.type = 'range' scrubber.min = 0 scrubber.max = pts.length - 1 scrubber.value = 0 scrubber.style.cssText = 'flex:1;accent-color:#1D9E75;' const timeLabel = document.createElement('span') timeLabel.textContent = '12:17' timeLabel.style.cssText = 'min-width:38px;color:#555;' const resetBtn = document.createElement('button') resetBtn.textContent = '↺ Reset' resetBtn.style.cssText = `padding:5px 14px;border-radius:20px; border:1px solid #ccc;background:#fff;font-size:13px;cursor:pointer;` ctrlBar.appendChild(playBtn) ctrlBar.appendChild(scrubber) ctrlBar.appendChild(timeLabel) ctrlBar.appendChild(resetBtn) container.appendChild(ctrlBar) yield container mapboxgl.accessToken = MAPBOX_TOKEN const map = new mapboxgl.Map({ container: mapDiv, style: "mapbox://styles/mapbox/outdoors-v12", center: [-25.2008, 37.7555], zoom: 13.5, pitch: 45, bearing: -20 }) invalidation.then(() => map.remove()) map.addControl(new mapboxgl.NavigationControl(), 'top-right') await new Promise(resolve => map.on('load', resolve)) map.addSource('ghost', { type: 'geojson', data: { type: 'Feature', geometry: { type: 'LineString', coordinates: pts.map(p => [p[1], p[0]]) } }}) map.addLayer({ id: 'ghost-layer', type: 'line', source: 'ghost', layout: { 'line-join': 'round', 'line-cap': 'round' }, paint: { 'line-color': '#999', 'line-width': 2, 'line-opacity': 0.3 } }) map.addSource('anim', { type: 'geojson', data: { type: 'Feature', geometry: { type: 'LineString', coordinates: [] } }}) map.addLayer({ id: 'anim-layer', type: 'line', source: 'anim', layout: { 'line-join': 'round', 'line-cap': 'round' }, paint: { 'line-color': '#1D9E75', 'line-width': 5, 'line-opacity': 1 } }) map.addSource('dot', { type: 'geojson', data: { type: 'Feature', geometry: { type: 'Point', coordinates: [pts[0][1], pts[0][0]] } }}) map.addLayer({ id: 'dot-layer', type: 'circle', source: 'dot', paint: { 'circle-radius': 9, 'circle-color': '#1D9E75', 'circle-stroke-width': 3, 'circle-stroke-color': '#fff' } }) new mapboxgl.Marker({ color: '#1D9E75' }) .setLngLat([pts[0][1], pts[0][0]]) .setPopup(new mapboxgl.Popup().setHTML('Start
12:17 · 280 m')) .addTo(map) new mapboxgl.Marker({ color: '#E24B4A' }) .setLngLat([pts[pts.length-1][1], pts[pts.length-1][0]]) .setPopup(new mapboxgl.Popup().setHTML('End
14:32 · 326 m')) .addTo(map) photoStops.forEach(s => { const el = document.createElement('div') el.style.cssText = `width:30px;height:30px;background:#BA7517; border:2px solid white;border-radius:6px; display:flex;align-items:center;justify-content:center; font-size:15px;cursor:pointer;box-shadow:0 2px 6px rgba(0,0,0,0.35);` el.textContent = '📷' const imgHTML = s.img ? '

' : '' new mapboxgl.Marker({ element: el }) .setLngLat([s.lon, s.lat]) .setPopup(new mapboxgl.Popup({ offset: 20, maxWidth: '290px' }).setHTML( '

' + imgHTML + '

' + s.emoji + '

' + '

' + s.title + '

' + '

' + s.desc + '

' + '

Feeling: ' + s.feeling + ' · ' + s.photos + ' photos · ' + s.elevation + ' m

' + '

' )) .addTo(map) }) function updateMap(i) { const idx = Math.min(Math.max(i, 0), pts.length - 1) mutable animIndex = idx map.getSource('anim').setData({ type: 'Feature', geometry: { type: 'LineString', coordinates: pts.slice(0, idx + 1).map(p => [p[1], p[0]]) } }) map.getSource('dot').setData({ type: 'Feature', geometry: { type: 'Point', coordinates: [pts[idx][1], pts[idx][0]] } }) map.setPaintProperty('dot-layer', 'circle-color', eleColor(pts[idx][2])) scrubber.value = idx timeLabel.textContent = pts[idx][3] } let timer = null, playing = false, idx = 0 playBtn.onclick = () => { if (playing) { clearInterval(timer); playing = false playBtn.textContent = '▶ Animate' } else { if (idx >= pts.length - 1) idx = 0 playing = true playBtn.textContent = '⏸ Pause' timer = setInterval(() => { updateMap(idx) idx++ if (idx >= pts.length) { clearInterval(timer); playing = false playBtn.textContent = '▶ Animate' } }, 28) } } resetBtn.onclick = () => { clearInterval(timer); playing = false; idx = 0 playBtn.textContent = '▶ Animate' updateMap(0) } scrubber.oninput = e => { clearInterval(timer); playing = false playBtn.textContent = '▶ Animate' idx = +e.target.value updateMap(idx) } updateMap(pts.length - 1) updateMap(0) }36:T954,// CELL 13: Elevation chart with synced dot { const W = 680, H = 120, PL = 40, PR = 10, PT = 10, PB = 30 const w = W - PL - PR, h = H - PT - PB const eles = pts.map(p => p[2]) const minE = Math.min(...eles), maxE = Math.max(...eles) const scaleY = v => h - ((v - minE) / (maxE - minE)) * h const scaleX = i => (i / (pts.length - 1)) * w const polyPts = pts.map((p,i) => `${scaleX(i)},${scaleY(p[2])}`).join(' ') const areaPath = `M0,${h} ` + pts.map((p,i) => `${scaleX(i)},${scaleY(p[2])}`).join(' ') + ` ${w},${h} Z` const photoTicksHTML = photoStops.map(s => { const x = scaleX(s.idx) return ` ${s.emoji} ` }).join('') const x = scaleX(animIndex) // animIndex used here makes this cell reactive const y = scaleY(pts[animIndex][2]) const ele = pts[animIndex][2] const anchor = x > w - 40 ? 'end' : 'middle' return html`` }37:T4e1,//CELL 14: Photo stops summary table html`

${photoStops.map((s,i) => ` `).join('')}

Stop	Location	Feeling	Photos	Elevation
${s.emoji}	${s.title}	${s.feeling}	${s.photos} 📷	${s.elevation} m

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CC-BY","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"","database":"$undefined"},{"id":38,"value":"\n/*\n🌿 Azores Hike — São Miguel\n//April 20, 2026 · 12:17–14:32 · ~6.2 km · 326 m elevation\n\n\n\n*/\n\n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":8,"value":"//CELL 2: Imports\nmapboxgl = require(\"mapbox-gl@2.15.0/dist/mapbox-gl.js\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":11,"value":"//CELL 3: Mapbox CSS\nhtml``\n\n\n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":41,"value":"//CELL 4: Mapbox token \nMAPBOX_TOKEN = \"pk.eyJ1IjoiZGlzc3RvY2tob2xtIiwiYSI6ImNsYXB4ZDBsODFjeGYzcHF2bDd5dmtuajQifQ.aqSUxGoF8DkpeJyEx3diOg\"\n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":14,"value":"$32","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":17,"value":"$33","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":20,"value":"//CELL 7: Colour helper\nfunction eleColor(ele) {\n if (ele > 240) return \"#E24B4A\" // high — red\n if (ele > 160) return \"#BA7517\" // mid — amber\n if (ele > 100) return \"#378ADD\" // low — blue\n return \"#1D9E75\" // valley — green\n}\n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":23,"value":"//CELL 8: GeoJSON for the full track\ntrackGeoJSON = ({\n type: \"FeatureCollection\",\n features: pts.slice(0, -1).map((p, i) => ({\n type: \"Feature\",\n properties: { color: eleColor((p[2] + pts[i+1][2]) / 2) },\n geometry: {\n type: \"LineString\",\n coordinates: [[p[1], p[0]], [pts[i+1][1], pts[i+1][0]]]\n }\n }))\n})\n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":26,"value":"//CELL 9: Animation state (mutable)\nmutable animIndex = 0\n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":29,"value":"$34","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":32,"value":"$35","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":35,"value":"$36","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":44,"value":"$37","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W38","stdlib":"1"}} 31:"$30:body"