Emi Griffith
a251b0df23
The page scripts each re-declared the shared presentation layer — the tier color table existed in four places (app.js, calendar.js, day.js, style.css) and the scale label tables in three (plus legend.html's own drifting copy), alongside per-page copies of the dryness ramp, formatters, ord, todayISO, esc, the weather icons/summary, month helpers and the 2-year range chunker. ~240 duplicated lines deleted (net -236 with the new module included). - frontend/shared.js (IIFE, extends window.Thermograph): tier colors read from style.css's :root custom properties at load — the CSS is now the single source of truth; the JS map exists only because inline-SVG work (chart + PNG export) needs literal values, with hex fallbacks for a missing stylesheet. Plus SCALE_TEMP/SCALE_RAIN, drynessColor, fmt*, ord, todayISO, esc, placeLabel, month/chunk date helpers, clickOpensPicker, and the weatherType summary (dsr-aware; the day page just omits dsr). - nav.js: wrapped in an IIFE — its ~15 top-level functions were globals in the shared classic-script scope, and a leaked locHash collided with page destructuring (caught by the browser smoke, not by node --check). locHash is now exported and used by all 8 former hand-built hash sites. - mappicker.js: initFindButton/setFindLabel replace the Find-button block each page rebuilt. - legend.html renders its scales from the shared tables, so the guide can no longer drift from what the app shows. Verified: node --check on all JS; 108 backend tests; headless-Chromium smoke over all five pages against live data — no console/page errors, legend rows 9/9, weekly 7 cards + colored chart/key/table + metric toggle, calendar grid + key + metric switch, day 7 ladders + weather icon, compare seeded rank card.
100 lines
5.1 KiB
HTML
100 lines
5.1 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<title>Thermograph — reading the grades</title>
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<meta name="description" content="Pick any point on Earth and see how its recent weather stacks up against ~45 years of local climate history — graded days, calendars, forecasts, and side-by-side comparisons." />
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<meta name="theme-color" content="#f0803c" />
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<!-- Link previews (Discord, Slack, iMessage…). The server fills the og:url /
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og:image origins in from this request's scheme://host + base path —
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crawlers need absolute URLs and don't run JS. -->
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<meta property="og:type" content="website" />
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<meta property="og:site_name" content="Thermograph" />
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<meta property="og:title" content="Thermograph — reading the grades" />
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<meta property="og:description" content="Pick any point on Earth and see how its recent weather stacks up against ~45 years of local climate history — graded days, calendars, forecasts, and side-by-side comparisons." />
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<meta property="og:url" content="__ORIGIN__/legend" />
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<meta property="og:image" content="__ORIGIN__/logo.png" />
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<meta property="og:image:width" content="512" />
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<meta property="og:image:height" content="512" />
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<meta property="og:image:alt" content="Thermograph logo" />
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<meta name="twitter:card" content="summary" />
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<link rel="icon" href="logo.svg" type="image/svg+xml" />
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<link rel="apple-touch-icon" href="logo.png" />
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<link rel="stylesheet" href="style.css" />
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</head>
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<body>
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<header>
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<div class="brand">
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<span class="logo">▚</span>
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<div>
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<h1>Thermograph · Guide</h1>
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<p class="tag">What the metrics and percentile grades mean</p>
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</div>
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<nav class="view-nav" aria-label="Views">
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<a href="./" data-view="map">Weekly</a>
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<a href="calendar" data-view="calendar">Calendar</a>
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<a href="day" data-view="day">Day</a>
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<a href="compare" data-view="compare">Compare</a>
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</nav>
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</div>
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</header>
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<main class="guide">
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<section class="guide-block">
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<h2>How the grades work</h2>
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<p>Every grade is <b>relative to this place's own climate history</b>, not an absolute
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temperature. For each day Thermograph builds a ±7-day seasonal distribution from
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decades of local records, then reports the <b>percentile</b> where the day falls in it.</p>
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<p>So a 60° day can be “Above Normal” in one place or season and
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“Below Normal” in another. That's why the categories read
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“Above/Below Normal”, “High/Low”, and “Near Record” —
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never “hot” or “cold”.</p>
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</section>
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<section class="guide-block">
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<h2>Grade scale — percentile of the local ±7-day history</h2>
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<div class="guide-scale" id="temp-scale"></div>
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</section>
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<section class="guide-block">
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<h2>Rain intensity — percentile among rain days</h2>
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<p class="muted">Precipitation is graded only across days that actually saw rain, so
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“Heavy” means heavy <i>for a rainy day here</i>. Dry days are colored by
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their dry streak instead (below).</p>
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<div class="guide-scale" id="rain-scale"></div>
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</section>
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<section class="guide-block">
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<h2>The metrics</h2>
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<dl class="guide-metrics">
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<dt>High / Low</dt><dd>The day's highest and lowest air temperature (°F).</dd>
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<dt>Feels</dt><dd>Apparent temperature — what the air actually felt like once humidity
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and wind are factored in, taking whichever apparent extreme (heat-index high or
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wind-chill low) sits further from a temperate baseline, graded against its own history.</dd>
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<dt>Humid</dt><dd>Absolute humidity: grams of water vapor per cubic meter of air (g/m³).</dd>
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<dt>Wind</dt><dd>Average sustained wind speed (mph).</dd>
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<dt>Gust</dt><dd>Peak wind gust for the day (mph).</dd>
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<dt>Precip</dt><dd>Total precipitation (inches), graded by intensity among rain days.</dd>
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<dt>Dry streak</dt><dd>Consecutive days since the last measurable rain — the color deepens
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the longer it's been dry, and resets to blue on a rain day.</dd>
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</dl>
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</section>
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<p class="guide-back"><a href="./">← Back to Thermograph</a></p>
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</main>
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<script src="nav.js"></script>
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<script src="shared.js"></script>
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<script>
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// The scale rows come from the shared tier tables, so this guide can't
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// drift from what the app actually shows.
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const { SCALE_TEMP, SCALE_RAIN } = window.Thermograph;
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const row = ({ c, label, range }) =>
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`<div class="guide-seg"><span class="guide-sw" style="background:var(--${c})"></span>` +
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`<span class="guide-lbl">${label}</span><span class="guide-rng">${range}</span></div>`;
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document.getElementById("temp-scale").innerHTML = SCALE_TEMP.map(row).join("");
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document.getElementById("rain-scale").innerHTML = SCALE_RAIN.map(row).join("");
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</script>
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</body>
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</html>
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