als-statistics/lib/index.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 Analyze from './analyze/index.js'
import { htmlTable, round, range } from './utils/index.js'
import Stats from './descriptive/index.js'
import Table from './table/index.js'
import Column from './column/index.js'
import { filterKeys } from './utils/filter-keys.js'
import { Counter } from './utils/counter.js'

class Statistics {
   static counter = new Counter('statistics')
   static tools = { range, round, htmlTable }
   static Table = Table;
   static Stats = Stats;
   static Analyze = Analyze; // CDF, CompareMeans, Correlate, Clustering, Regression
   static Column = Column;
   constructor(name) {
      this.name = Statistics.counter.getName(name);
      this.tables = {}
   }

   get colNames() {
      const colNames = new Set()
      for (let tName in this.tables) {
         this.tables[tName].colValues.forEach(({ name }) => { colNames.add(name) });
      }
      return Array.from(colNames)
   }

   columns(name, ...colFilter) {
      const colNames = filterKeys(this.colNames, colFilter), columns = {};
      for (let tName in this.tables) {
         colNames.forEach(colName => {
            const col = this.tables[tName].columns[colName];
            const values = col && col.values;
            if (values) columns[`${tName}_${colName}`] = values;
         })
      }
      return new Table(columns, { name, alignColumns: false })
   }
   addTable(obj, options) {
      const table = new Table(obj, options)
      this.tables[table.name] = table;
      return table
   }
   deleteTable(tableName) { delete this.tables[tableName] }
}

Table.Statistics = Statistics
export default Statistics

export { Analyze as Analyze }
export { htmlTable as htmlTable }
export { range as range }
export { round as round }
export { Stats as Stats }
export { Table as Table }