d3-node/choropleth-us-counties

Name: choropleth-us-counties

Owner: D3-Node

Description: null

Created: 2017-08-25 05:21:57.0

Updated: 2017-08-25 10:14:05.0

Pushed: 2017-08-25 05:22:54.0

Homepage: null

Size: 642

Language: JavaScript

GitHub Committers

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README

Choropleth Map of US Counties :earth_americas:

Choropleth of US counties via CSV data and custom color scale

Install

m install @d3-node/choropleth-us-counties --save

Usage

t d3nMap = require('@d3-node/choropleth-us-counties')

ead CSV -> parse to json
t csv = fs.readFileSync('./unemployment.csv').toString()
t data = d3nMap.csvParse(csv)

t colors = [ // 9-color scheme (blue)
f7fbff', '#deebf7', '#c6dbef',
9ecae1', '#6baed6', '#4292c6',
2171b5', '#08519c', '#08306b'


t scale = [ 2, 3, 4, 5, 6, 7, 8, 9 ] // buckets for unemployment rate

t map = d3nMap({ data, colors, scale })
svgString() // returns <svg>

See test for actual usage.

Output the test map to an image (PNG)

test

API

Options

{ data, colors, scale, [ idField = 0, metricField = 1 ] }