choropleth-chart

Generate a choropleth chart in svg format to be used as an API response.

example output

svg output

svg output

usage example

import {usMap} from '@byu-oit/choropleth-chart'

const populations = {
'AK': 28612,
'AL': 22961,
'AR': 2742,
'AZ': 28968,
'CA': 10838,
'CO': 3912,
'CT': 4346,
'DE': 7092,
'FL': 11324,
'GA': 29688,
'HI': 6060,
'IA': 23746,
'ID': 23104,
'IL': 27326,
'IN': 28071,
'KS': 24592,
'KY': 20297,
'LA': 29848,
'MA': 3720,
'MD': 28204,
'ME': 7675,
'MI': 25490,
'MN': 11956,
'MO': 15340,
'MS': 16302,
'MT': 8802,
'NC': 31497,
'ND': 29888,
'NE': 21640,
'NH': 9146,
'NJ': 9528,
'NM': 11543,
'NV': 14122,
'NY': 14116,
'OH': 26886,
'OK': 6374,
'OR': 30670,
'PA': 20437,
'RI': 25357,
'SC': 27932,
'SD': 14865,
'TN': 10741,
'TX': 25741,
'UT': 125,
'VA': 16695,
'VT': 3510,
'WA': 6644,
'WI': 183,
'WV': 11706,
'WY': 31894
}
const chartSvg = usMap(populations)

usage

There are 2 functions provided by the library: usMap and worldMap. Each function takes an object whose keys are the 2 letter state or 2-letter ISO country code, respectively.

Example:

statePopulations = {
    ...
    'UT': 100,
    ...
}

countryPopulations = {
    ...
    'CA': 1000,
    'GB': 800,
    'FR': 900,
    'US': 1000,
    ...
}

Options may also be provided to customize the map display.