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feat(dashboard): modern color palette for citations chart #334

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Merged
neuromechanist merged 1 commit into from
Jun 10, 2026
Merged

feat(dashboard): modern color palette for citations chart #334

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26 changes: 18 additions & 8 deletions dashboard/osa/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -1173,13 +1173,23 @@ <h3 style="color:#1e3a5f;margin:1.5rem 0 1rem;font-size:1rem;">Admin: Feedback</
});
}

// Distinct color per series: use the fixed palette, then spread evenly
// around the HSL wheel when there are more series than palette entries
// (the citation chart can stack 14+ canonical papers).
function seriesColor(idx, total) {
if (total <= COLORS.length) return COLORS[idx];
const hue = Math.round((idx / total) * 360);
return `hsl(${hue}, 62%, 48%)`;
// Modern qualitative palette (Tableau 10 + companion tones) for charts that
// stack many series, e.g. the citations chart's 14+ canonical papers. The
// ten saturated hues come first so smaller charts stay high-contrast.
const CITATION_PALETTE = [
'#4e79a7', '#f28e2b', '#e15759', '#76b7b2', '#59a14f',
'#edc948', '#b07aa1', '#ff9da7', '#9c755f', '#bab0ac',
'#a0cbe8', '#ffbe7d', '#8cd17d', '#f1ce63', '#86bcb6',
'#ff9d9a', '#d37295', '#fabfd2', '#d4a6c8', '#d7b5a6',
];

// Distinct color per series. Use the curated palette first; beyond it,
// walk the HSL wheel by the golden angle so overflow colors stay distinct
// and balanced rather than clustering.
function seriesColor(idx) {
if (idx < CITATION_PALETTE.length) return CITATION_PALETTE[idx];
const hue = Math.round((idx * 137.508) % 360);
return `hsl(${hue}, 55%, 55%)`;
}

function renderCitationsChart(citations) {
Expand All @@ -1204,7 +1214,7 @@ <h3 style="color:#1e3a5f;margin:1.5rem 0 1rem;font-size:1rem;">Admin: Feedback</
const datasets = dois.map((doi, idx) => ({
label: labels[doi] || doi,
data: years.map(y => byPaper[doi][y] || 0),
backgroundColor: seriesColor(idx, dois.length),
backgroundColor: seriesColor(idx),
borderWidth: 0,
}));

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