mheiber

This pie chart is constructed from a CSV file storing the populations of various age groups. The chart employs a number of D3 features:

• d3.csv - load and parse data
• d3.scale.ordinal - color encoding
• d3.svg.arc - display arcs
• d3.layout.pie - compute arc angles from data

mheiber

// Architecture 1

function callApi(x, y, z) {
    manipulate params
    manipulate params some more ...
    return fetch(...)
        .then(result => {
            if (result.status === ...) {
                handle status stuff
            }