React Axis

An axis widget intended to replace generated D3 SVG with a React friendly component that supports timezones correctly.

Under the hood, it uses:

• d3.scale and d3.format
• moment.js and moment-timezone

SVG rendering is done with React.

This is a basic version of the functionality needed for a full charting application, but it's a start. It currently supports:

• A general purpose Axis component

  • Supports log, power and linear scales
  • Supports animation between scales
  • Can be positioned in different ways

• A more specific TimeAxis component

  • Supports arbitrary timezones
  • Supports animations between scales
  • Custom format functions

We will be merging this into react-timeseries-charts. Once that happens we'll bump this to v1.0.

Getting started

This React Axis component is intended to be installed with npm and the built into your project with a tool like Webpack. As it is a standalone axis component, most likely it should be used in another library, but who knows. Either way, it expects React to be present.

To install:

npm install react-axis --save

You can then import and use either the Axis or TimeAxis. In general the component is designed to be rendered within existing SVG (though it has a stand alone mode too):

    import { TimeAxis } from "react-axis";

    render() {
        ...
        return (
            <svg>
                ...
                <TimeAxis
                    timezone="America/Chicago"
                    position="bottom"
                    beginTime={beginTime}
                    endTime={endTime}
                    width={800} height={50}
                />
            </svg>
        );
    }

Developing

The repo contains the examples/ website. This is very helpful in developing new functionality. Within a cloned repo, you first need to run:

yarn install

This will install the development dependencies into your node_modules/ directory.

You can then start up the test server, as well as automatic source building, by doing:

yarn run start-website

There is also a growing set of Jest tests, both for the components and utility code. The testing uses Jest's snapshot mechanism. To run, use:

yarn test

Visual materialization of the test examples can be accessed on the examples website at:

http://localhost:3000/#/tests

This setup is a work in progress.

License

This code is distributed under a BSD style license, see the LICENSE file for complete information.

Copyright

React Axis, Copyright (c) 2016, The Regents of the University of California, through Lawrence Berkeley National Laboratory (subject to receipt of any required approvals from the U.S. Dept. of Energy). All rights reserved.

If you have questions about your rights to use or distribute this software, please contact Berkeley Lab's Technology Transfer Department at [e-mail].

NOTICE. This software is owned by the U.S. Department of Energy. As such, the U.S. Government has been granted for itself and others acting on its behalf a paid-up, nonexclusive, irrevocable, worldwide license in the Software to reproduce, prepare derivative works, and perform publicly and display publicly. Beginning five (5) years after the date permission to assert copyright is obtained from the U.S. Department of Energy, and subject to any subsequent five (5) year renewals, the U.S. Government is granted for itself and others acting on its behalf a paid-up, nonexclusive, irrevocable, worldwide license in the Software to reproduce, prepare derivative works, distribute copies to the public, perform publicly and display publicly, and to permit others to do so.