@chartts/parquet

Parquet adapter for Chartts. Import Parquet files as chart data.

Install

npm install @chartts/parquet @chartts/core

Uses hyparquet for Parquet parsing.

Usage

import { fromParquet } from "@chartts/parquet"

const response = await fetch("/data/metrics.parquet")
const buffer = await response.arrayBuffer()
const data = await fromParquet(buffer)

// With column selection and row limit
const data2 = await fromParquet(buffer, {
  labelColumn: "timestamp",
  seriesColumns: ["cpu", "memory", "disk"],
  rowLimit: 1000,
})

API

fromParquet(buffer, options?)

Parses a Parquet file (ArrayBuffer or Uint8Array) into ChartData. Returns a Promise.

| Option | Type | Default | Description | |--------|------|---------|-------------| | labelColumn | string | auto-detect | Column to use as labels | | seriesColumns | string[] | all numeric | Columns to use as series | | rowLimit | number | all rows | Maximum rows to read |

Export is not supported. Parquet writing is complex and out of scope for a charting adapter.

Part of Chartts

Beautiful charts. Tiny bundle. Every framework.

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License

MIT