Bar Charts
Explore how to create vertical bar charts in D3.js by loading data from CSV files, setting up scales and axes, and styling bars. Learn to manage chart dimensions, positioning, and spacing to visualize categorical comparisons clearly.
We'll cover the following...
Bar charts
A bar chart is a visual representation using either horizontal or vertical bars to show comparisons between discrete categories. There are a number of variations of bar charts including stacked, grouped, horizontal, and vertical.
We will work through a simple vertical bar chart that uses a value on the y-axis and a category in the form of a name on the x-axis.
The end result will look like this:
The data
The data for this example will be sourced from an external (purely fictional) CSV file named sales.csv. It consists of a column of names and “sales.” Its contents looks as follows:
salesperson,sales
Bob,33
Robin,12
...
The code
The full code listing for the example we are going to work ...