als-statistics/lib/column/prepare.js

Modular JS statistics toolkit for Node.js and the browser: descriptive stats, correlations (Pearson/Spearman/Kendall), t-tests & ANOVA (Student/Welch), reliability (Cronbach’s alpha), regression (linear/logistic), clustering (DBSCAN/HDBSCAN), and table/co

import range from '../utils/range.js'

export function prepare(values, labels) {
   if (values && values.constructor.name === 'Column') {
      if (!labels || labels.length === 0) labels = values.labels
      values = values.values.slice()
   }
   if ((!values || values.length === 0) && labels && labels.length) values = range(0, labels.length, 1)
   const invalid = [];
   values = values.filter((v, i) => {
      if (typeof v === 'number' && Number.isFinite(v)) return true
      invalid.push(i)
      return false
   })
   return { values, labels, invalid }
}