Basic Tool for Plotting Bar Charts using D3

Basic Usage:

• npm install -S bar-plot-d3

• import in code

  • import 'd3Bar from 'bar-plot-d3'

• Add canvas element to html page (d3Canvas is the default id expected)

  • <div id='#d3Canvas' />

• Call addBars

  • const data_example = [{country: 'USA': gdp: 20.8}, {country: 'China': gdp: 14.9}, {country: 'Japan': gdp: 4.9}, {country: 'Germany': gdp: 3.8}, {country: 'France': gdp: 2.6}]
  • d3Bar.addBars({data: data})

  Options:

• specify canvas size (defaults to 900 x 600)

  • (automatically adjusts size to fit canvas)
  • d3Bar({data: data, canvasHeight: 500, canvasWidth: 800})

• specify orientation (defaults to vertical bar chart)

  • (automatically adjusts size to fit canvas)
  • d3Bar({data: data, orientation: "horizontal"})

• specify axis labels

  • (automatically adjusts size to fit canvas)
  • d3Bar({data: data, xaxis: 'Country', yaxis: 'GDP ($USD in millions)'})

• specify scale

  • (overrides auto-scaling that fits plot to canvas size)
  • d3Bar({data: data, scale: 10})

• check default settings

  • var defaults = d3Bar.checkDefaults()
  • this allows you to check values like 'scale', 'maxValue' etc. if you have customized the canvas size and/or scaling
  • var defaults = d3Bar.checkDefaults({data: data, scale: 10, canvasHeight: 500, canvasWidth: 800})

• embed data table in page

  • add empty element in html
  • <div#embedDataHere />
    • d3Bar.addBars({data: data, embedData: "embedDataHere"})