JavaScript 數據實用程序庫：Datalib

Datalib 是一個 JavaScript 數據實用程序庫。它提供用于數據加載、 類型推理、 常見統計和字符串的模板。包括：

• 加載并解析數據文件(JSON, TopoJSON, CSV, TSV).

• 統計摘要(均值、偏差、中位數、相關測量等).

• 數據驅動字符串模版，包括一組篩選器.

• 用于處理 JavaScript 對象和數組的實用程序.

代碼示例：

// Load datalib.
var dl = require('datalib');

// Load and parse a CSV file. Datalib does type inference for you.
// The result is an array of JavaScript objects with named values.
// Parsed dates are stored as UNIX timestamp values.
var data = dl.csv('http://uwdata.github.io/datalib/data/stocks.csv');

// Show summary statistics for each column of the data table.
console.log(dl.summary(data).toString());

// Compute correlation measures between price and date.
var price = dl.accessor('price');
var date = dl.accessor('date');
console.log(
  dl.cor(data, price, date),      // Pearson product-moment correlation
  dl.cor.rank(data, price, date), // Spearman rank correlation
  dl.cor.dist(data, price, date)  // Distance correlation
);

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