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17 lines
515 B
JavaScript
17 lines
515 B
JavaScript
export const processCSV = async (str, {
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filterColumn: fc,
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filterValue: fv,
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groupBy: gb,
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aggregateColumn: ac,
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operation: op
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}) => {
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const { csvParse, rollups, sum, mean } = await import('https://cdn.jsdelivr.net/npm/d3@7/+esm')
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const val = d => +d[ac] || 0
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return rollups(
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csvParse(str).filter(d => d[fc] == fv),
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g => op === 'count' ? g.length : op === 'sum' ? sum(g, val) : mean(g, val) || 0,
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d => d[gb]
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).map(([k, r]) => ({ [gb]: k, result: r }))
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}
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export default processCSV; |