CFPB Chart Builder

Charts for the Consumer Financial Protection Bureau.

Demo

https://cfpb.github.io/cfpb-chart-builder/

Installation

Add a div with a class of cfpb-chart and the following data attributes to your page:

<div class="cfpb-chart"
     data-chart-type="line"
     data-chart-title="Number of Originations (in millions)"
     data-chart-y-axis-label="Volume of Originations (in billons)"
     data-chart-description="Auto loan originations decreased in 2016."
     data-chart-color="green"
     data-chart-metadata="Number of Loans"
     data-chart-source="consumer-credit-trends/auto-loans.csv">
     Auto loan originations decreased in 2016.
</div>

Add the library to your page:

<script type="text/javascript" src="dist/cfpb-chart-builder.js"></script>

It'll generate a chart for you:

You can also manually initialize a chart by providing a target element. Install the library with npm install cfpb-chart-builder and then:

const ccb = require( 'cfpb-chart-builder' );

const chart = ccb.createChart({
  el: document.getElementById('my-chart-div'),
  source: 'http://mywebsite.com/api/data.json',
  type: 'line',
  color: 'green'
});

// Charts can be updated and redrawn
chart.update({
  source: 'http://mywebsite.com/api/some-other-data.json',
});

API

createChart( options )

Create a CFPB chart. Config options can be passed as an argument to createChart or as a data attribute on an element with a class of cfpb-chart (see above).

options.el: Element

Required. Reference to the DOM element in which to render the chart.

options.type: String

Required. Type of chart to render. Options: line, line-comparison, bar or tile_map.

options.source: String

Required. Location of data (JSON) to download and add to chart series. Can be relative or absolute URL. If relative, the value of window.CFPB_CHART_DATA_SOURCE_BASE will be prepended to it.

Multiple data sources can be provided by separating them with semicolons. E.g. mortgage/national.json;mortgage/nyc.json.

options.title: String

Optional. Title of the chart.

options.color: String

Optional. Chart's color scheme. Options: blue, green, teal, navy, purple, neutral, gold. If omitted, the chart color will be black.

options.metadata: String|Object

Optional. Arbitrary metadata for your chart. For example, bar charts currently require a group key (e.g. Number of Loans) to filter data.

options.yAxisLabel: String

Optional. Hardcoded y-axis label for the chart.

options.tooltipFormatter: Function

Optional. Function that returns HTML to format the chart's tooltip. See Highcharts' tooltip.formatter.

options.pointDescriptionFormatter: Function

Optional. Formatter function to use instead of the default for point descriptions. See Highcharts' accessibility.pointDescriptionFormatter.

options.seriesDescriptionFormatter: Function

Optional. Formatter function to use instead of the default for series descriptions. See Highcharts' accessibility.seriesDescriptionFormatter.

options.screenReaderSectionFormatter: Function

Optional. A formatter function to create the HTML contents of the hidden screen reader information region. See Highcharts' accessibility.screenReaderSectionFormatter.

chart.update( options )

Update a CFPB chart. Provide any of the above options and the chart will be redrawn with those new settings.

Contributing

We welcome your feedback and contributions. See the contribution guidelines for more details.

Install locally

1. Install Node.js 8 however you'd like.
2. Install Gulp: npm install -g gulp
3. Install the dependencies and compile the project with: ./setup.sh

NOTE: To re-install and rebuild all the site’s assets run ./setup.sh again. See the usage section on updating all the project dependencies.

Development usage

Each time you fetch from the upstream repository (this repo), run ./setup.sh. This setup script will remove and re-install the project dependencies and rebuild the site's JavaScript and CSS assets.

To run the site on a local server, run gulp watch from the project root. Running in this manner will also watch for changes in the source code and automatically update the running site.

Development with cfgov-refresh

When running the site locally, you can temporarily link changes you are making to the code with the cfgov-refresh project.

1. In the cfpb-chart-builder directory, run:

   npm link

2. In the cfgov-refresh directory:

   ./setup.sh
   npm link cfpb-chart-builder
   gulp build
   ./runserver.sh

3. When you're done and want to bring back the published package:

   npm unlink cfpb-chart-builder
   yarn add cfpb-chart-builder
   gulp build

Publish a release

1. After merging all PRs needed for release, update the version in package.json using semantic versioning. This command will also tag and commit the updated version:

   # change patch to minor or major as needed
   npm version patch

2. Push the new version and tag to Github:

   git push upstream main --tags

3. Create a new release description on Github at https://github.com/cfpb/cfpb-chart-builder/releases/new using your new tag.
4. Publish to npm:

   npm publish

Testing

npm test will run unit and browser tests.

Sauce Labs is used to test the charts in IE 10. (Note: This is not working correctly as of 1/24/19.) An Open Sauce account has been created for this repo. Its credentials can be found at https://GHE/gist/contolini/504ea71f6a19c74090c7a150aff60421. Add the credentials locally by doing:

1. cp test/config.json.example test/config.json
2. Add valid Sauce Labs credentials to test/config.json (see above gist).

The browser tests will take several minutes to run. The test script simply loads http://localhost:8089/ in IE VMs and reports any window errors.

Getting help

Use the issue tracker to follow the development conversation. If you find a bug not listed in the issue tracker, please file a bug report.

Getting involved

We welcome your feedback and contributions. See the contribution guidelines for more details.

Additionally, you may want to consider contributing to the Capital Framework, which is the front-end pattern library used in this project.

Open source licensing info

1. TERMS
2. LICENSE
3. CFPB Source Code Policy