d3-example-bar-chart-plugin

A reimplementation of Let's Make a Bar Chart III with the plugin infrastructure of D3v4.

The goal for this package is to serve as a reference for creating reusable and versioned D3 charts that that can be distributed through npm.

Installing

If you use NPM, npm install d3-example-bar-chart-plugin. Otherwise, download the latest release.

Examples

Its best to check out the example/index.html file for how this plugin works in practice.

Note: The example makes use of d3-svg which removes the boilerplate of creating a svg element. This library lets the example work by only using D3 plugins, and not the library as a whole.

Behavior

The chart is a function that can chain several functions together and is ultimately callable by a d3_select.select-ed element.

 
var svg = d3_select.select('svg')
                    .attr('width', 700)
                    .attr('height', 400);
 
 
var data = [{letter: 'A', frequency: 0.08}, ....];
 
 
var barChart = d3_example_bar_chart_plugin.chart()
                  .width(700)
                  .height(400)
                  .margin({top: 20, right: 30, bottom: 30, left: 40})
                  .data(data)
                  .xValue(function(d) {
                    return d.letter;
                  })
                  .yValue(function(d) {
                    return d.frequency;
                  });
 
 
svg.call(barChart);

API Reference

d3_example_bar_chart_plugin.chart()

Creates and returns a new chart.

chart.data([data])

Sets or returns the data to be rendered to the chart.

chart.xValue([xValue])

Sets or returns the x value accessor for the data.

chart.yValue([yValue])

Sets or returns the y value accessor for the data.

chart.width([width])

Sets or returns the width of the chart.

chart.height([height])

Sets or returns the height of the chart.

chart.margin([margin])

Sets or returns the margins of the chart.

margin is a object with the format: {top: 0, bottom: 0, left: 0, right: 0}.

License

MIT