27:null 28:["$","title",null,{"children":"Helicopter Crash Graphics | Test - Jacob | Observable"}] 2d:T574,top10GenAv = html`

Montana general aviation accidents, 2016-2025

Note: data shown through Oct. 24 of each year to allow for comparison to partial-year data for 2025.

${await stateComparisonChartHorizontal}

Data: NTSB

Graphic: Jacob Olness/MTFP

` 2e:T53e,stateComparisonChartHorizontal = { const n = 10; const metric = "fatalCrashesPer100kResidents"; const data = fatalAccidentsByState .slice(0, n) .map(d => ({ ...d, [metric]: +d[metric] })); return Plot.plot({ // title: `Top ${n} states by fatal general aviation crashes`, width: 800, height: 550, marginLeft: 127, marginRight: 0, marginTop: 10, marginBottom: 50, fontFamily: "Arial", x: { label: "Fatal accidents per 100k residents →", grid: true, domain: [0, 9.5], fontFamily: "Arial", }, y: { label: "", domain: data.map(d => d.state), reverse: false, fontFamily: "Arial", padding: 0.17, tickPadding: 8, }, marks: [ Plot.barX(data, { x: metric, y: "state", fill: d => d.state === "Montana" ? "#F85028" : "#8c8c8c", stroke: "#d8d8d8", strokeWidth: d => d.state === "Montana" ? 0 : 0, title: d => `${d.state}: ${d[metric].toFixed(2)}`, }), Plot.text(data, { x: metric, y: "state", text: d => d[metric].toFixed(1), dx: 6, dy: 3, fill: "black", textAnchor: "start", fontFamily: "Arial", }) ], style: { fontSize: "1.1em", fontFamily: "Arial", } }); } 2f:T6df,mtGenAvTrendsEmbed = html`

Montana general aviation accidents, 2016-2025

Note: data shown through Oct. 24 of each year to allow for comparison to partial-year data for 2025.

Fatal accidents

All accidents

${chartStyle} ${await montanaTrendsChart}

Data: NTSB

Graphic: Jacob Olness/MTFP

` 30:T536,montanaTrendsChart = { const data = montanaAccidentTrends.map(d => ({ year: d.year, fatal: +d.fatal || 0, nonfatal: (+d.total || 0) - (+d.fatal || 0), total: +d.total || 0 })); const chartWidth = 800; const chartHeight = 550; return Plot.plot({ width: chartWidth, height: chartHeight, marginLeft: 60, marginBottom: 60, marginTop: 50, fontFamily: "Arial", x: { label: "", type: "band", tickRotate: -45, tickPadding: 6 }, y: { label: "Number of accidents", grid: true, nice: true }, marks: [ // base (nonfatal) bar Plot.barY(data, { x: "year", y: "nonfatal", fill: "#CEBC9F", title: d => `${d.year}: ${d.nonfatal} nonfatal` }), // fatal stacked above nonfatal Plot.barY(data, { x: "year", y: d => d.nonfatal + d.fatal, y1: d => d.nonfatal, fill: "#F85028", title: d => `${d.year}: ${d.fatal} fatal` }), Plot.text(data, { x: "year", y: d => d.nonfatal + d.fatal / 2, text: d => d.fatal, fill: "black", fontWeight: "bold", fontSize: 16, dy: 0 }), Plot.ruleY([0]) ], style: { fontSize: "1.1em", fontFamily: "Arial" } }); } 31:T4fe,stateComparisonChart = { const n = 10; const metric = "fatalCrashesPer100kResidents"; const data = fatalAccidentsByState .slice(0, n) .map(d => ({ ...d, [metric]: +d[metric] })); return Plot.plot({ title: `Top ${n} states by fatal crashes per 100k residents`, width: 800, height: 500, marginLeft: 60, marginBottom: 110, marginTop: 40, fontFamily: "Arial", x: { label: "State", domain: data.map(d => d.state), tickRotate: -45, fontFamily: "Arial", }, y: { label: "Fatal crashes per 100k residents", fontFamily: "Arial", grid: true, domain: [0, 12] // <-- custom domain }, marks: [ Plot.barY(data, { x: "state", y: metric, fill: d => d.state === "Montana" ? 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