Building barplots in d3.js relies on the addition of several
rect, one per group in the categorical variable. The first example below should guide you in this procedure. Note that ordering groups is an important step when building barplots. This example explains how to do it.
Due to its simplicity, barplot is a very good chart to understand the basic concepts of interactivity. Below are many examples illustrating how to deal with
enter() function and more.
Animation at loading
A couple of lines allow to add an animation effect when the plot is loading: bars start from 0 and reach their real value.
Change color with a button
Clicking on a button triggers a function that changes the style of all rectangles
Change input data: simple version
How to go from one dataset to another with smooth transition.
Works only with same number of group and same Y range. (X and Y axis are not updated)
Change input data: upgraded version
How to go from one dataset to another with smooth transition. Upgraded version: X and Y axis axis are updated: data 1 and 2 can have different # of group.
A barplot can also display values for several levels of grouping. Subgroups can be displayed one beside each other, giving a grouped barplot. If subgroups are displayed on top of each other, it is a stacked barplot.
Stacked barplot with tooltip
Explain how to add a tooltip on hover for each subgroup. Input data at wide format.