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arquero

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Query processing and transformation of array-backed data tables.

github.com/uwdata/arquero

uwdata/arquero

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/** * Generate a table expression that computes the number of rows * corresponding to a given fraction for each group. The resulting * string can be used as part of the input to the sample verb. * @param {number} fraction The fractional value. * @return {string} A table expression string for computing row counts. * @example frac(0.5) */ export function frac(fraction: number): string;