data-forge-plot

The forgiving plotting API designed for use with Data-Forge.

Data-Forge Plot is now a simple wrapper for the Plot library.

Use Data-Forge Plot to quickly and conveniently render charts from your data in JavaScript or TypeScript. It is an abstraction layer that connects Data-Forge with JavaScript visualization libraries so that it's easy to plot charts from your data.

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Breaking changes

As of version 1.0.0 Data-Forge Plot has been gutted and reimplimented in terms of the Plot library (which is very similar). DFP is now just a wrapper for Plot to ease my maintence burden.

The function exportWeb has been removed because it is to difficult to maintain.

If you want to use this in the browser please use the Plot library instead, e.g.:

const dataframe = ...
const plotConfig = { ... };
const axisMap = { ... };
import { plot } from "plot";
import "@plotex/render-dom";
plot(dataframe.toArray(), plotConfig, axisMap)
    .renderDOM(document.getElementByID("a-chart");

--

As of version 0.4.0 the Nightmare/Electron depenency has been removed along with the renderImage function.

The renderImage function has been moved to the separate library @data-forge-plot/render. This has been removed due to the size that the Electron dependency adds to this package. In the future you you will have to install the separate package to render a plot to an image.

Please note that the sample code below to see how the new library is installed and required to access the renderImage function.

Project Goals

• To simply and conveniently from a series or dataframe to chart.
• To create charts and visualizations in Node.js and the browser.
• To be able to serialize a chart to JSON and then reinstantiate it from the JSON in a web-app.
• To separate configuration and data definition to make it easy to reuse charts.
• To configure charts in JSON or fluent API.

Usage

Some instructions for using Data-Forge Plot. These instructions are for JavaScript, but this library also works in TypeScript.

Install

npm install --save data-forge data-forge-plot @plotex/render-image

Setup

    const dataForge = require('data-forge');
    require('data-forge-fs'); // Extends Data-Forge with 'readFile' function.
    require('data-forge-plot'); // Extends Data-Forge with the 'plot' function.
    require('@plotex/render-image'); // Extends Data-Forge Plot with the 'renderImage' function.
    require('@plotex/render-dom'); // Extends Data-Forge Plot with the 'renderDOM' function.

Rendering a chart from a CSV file to an image file

    const dataFrame = await dataForge.readFile("my-data-file.csv").parseCSV();
    await dataFrame.plot().renderImage("my-chart.png");

Rendering a chart to a web page.

    const dataArray = // ... acquire data, e.g. from a REST API ...
    const dataFrame = new DataFrame(dataArray);
    const chartElement = document.getElementById("chart");
    await dataFrame.plot().renderDOM(chartElement);