Home Components Area Map

Area Map

<AreaMap 
    data={la_zip_sales} 
    areaCol=zip_code
    geoJsonUrl='path/to/your/geoJson'
    geoId=ZCTA5CE10
    value=sales
    valueFmt=usd
    height=250
/>

Examples

Custom Basemap

You can add a different basemap by passing in a basemap URL. You can find examples here: https://leaflet-extras.github.io/leaflet-providers/preview/

Note: you need to wrap the url in curly braces and backticks to avoid the curly braces in the URL being read as variables on your page

<AreaMap 
    data={la_zip_sales} 
    areaCol=zip_code
    geoJsonUrl='path/to/your/geoJson'
    geoId=ZCTA5CE10
    value=sales
    valueFmt=usd
    height=250
    basemap={`https://tile.openstreetmap.org/{z}/{x}/{y}.png`}
/>

Using an Online GeoJSON

<AreaMap 
    data={orders_by_state} 
    areaCol=state
    geoJsonUrl=https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_110m_admin_1_states_provinces.geojson
    geoId=name
    value=orders
/>

Custom Tooltip

tooltipType=hover

<AreaMap 
    data={la_zip_sales} 
    areaCol=zip_code
    geoJsonUrl='path/to/your/geoJson'
    geoId=ZCTA5CE10
    value=sales
    valueFmt=usd
    height=250
    tooltip={[
        {id: 'zip_code', fmt: 'id', showColumnName: false, valueClass: 'text-xl font-semibold'},
        {id: 'sales', fmt: 'eur', fieldClass: 'text-[grey]', valueClass: 'text-[green]'}
    ]}
/>

<AreaMap 
    data={la_zip_sales} 
    areaCol=zip_code
    geoJsonUrl='path/to/your/geoJson'
    geoId=ZCTA5CE10
    value=sales
    valueFmt=usd
    height=250
    tooltipType=click
    tooltip={[
        {id: 'zip_code', fmt: 'id', showColumnName: false, valueClass: 'text-xl font-semibold'},
        {id: 'sales', fmt: 'eur', fieldClass: 'text-[grey]', valueClass: 'text-[green]'},
        {id: 'link_col', showColumnName: false, contentType: 'link', linkLabel: 'Click here', valueClass: 'font-bold mt-1'}
    ]}
/>

Custom Styling

<AreaMap 
    data={la_zip_sales} 
    areaCol=zip_code
    geoJsonUrl='path/to/your/geoJson'
    geoId=ZCTA5CE10
    value=sales
    valueFmt=usd
    height=250
    color=#fff5d9
    borderColor=#737373
    borderWidth=0.5
/>

Custom Color Palette

<AreaMap 
    data={la_zip_sales} 
    areaCol=zip_code
    geoJsonUrl='path/to/your/geoJson'
    geoId=ZCTA5CE10
    value=sales
    valueFmt=usd
    height=250
    colorPalette={['yellow','orange','red','darkred']}
/>

Pass in a link column to enable navigation on click of the point. These can be absolute or relative URLs

<AreaMap 
    data={la_zip_sales} 
    areaCol=zip_code
    geoJsonUrl='path/to/your/geoJson'
    geoId=ZCTA5CE10
    value=sales
    valueFmt=usd
    height=250
    link=link_col
/>

Use Map as Input

Use the name prop to set an input name for the map - when a point is clicked, it will set the input value to that row of data

<AreaMap 
    data={la_zip_sales} 
    areaCol=zip_code
    geoJsonUrl='path/to/your/geoJson'
    geoId=ZCTA5CE10
    value=sales
    valueFmt=usd
    height=250
    name=my_area_map
/>

Click an area on the map to see the input value get updated:

Selected value for {inputs.my_area_map}:

{
  "id": true,
  "zip_code": true,
  "sales": true,
  "link_col": true
}

Selected value for {inputs.my_area_map.zip_code}:

true

Filtered Data
No Results

Required GeoJSON Data Structure

The GeoJSON data you pass to the map must be a feature collection. See here for an example

Map Resources

Below are a selection of publically available GeoJSON files that may be useful for mapping. These are from the Natural Earth Data project, and hosted by GeoJSON.xyz.

Country, State, and City Locations
No Results

Legends

Categorical Legend

<AreaMap
   legendType=categorical
   legendPosition=bottomLeft
   data={grouped_locations}
   lat=lat
   long=long
   value=Category
   geoId=ZCTA5CE10
   areaCol=zip_code
   colorPalette={['#C65D47', '#5BAF7A', '#4A8EBA', '#D35B85', '#E1C16D', '#6F5B9A', '#4E8D8D']}
/>

Scalar Legend

0 0
<AreaMap
    legendType=scalar
    legendPosition=bottomLeft
    data={grouped_locations}
    lat=lat
    long=long
    value=sales
    geoId=ZCTA5CE10
    areaCol=zip_code
    colorPalette={['#dc0101', '#01dc08']}
/>

Options

Areas

data
Required
Query result, referenced using curly braces
Options:
query name
geoJsonUrl
Required

Path to source geoJSON data from - can be a URL (see Map Resources) or a file in your project.

If the file is in your project, store it in a static folder in the root of your project, and reference it as geoJsonUrl="/your_file.geojson"

Options:
URL
areaCol
Required
Column in the data that specifies the area each row belongs to.
Options:
column name
geoId
Required
Property in the GeoJSON that uniquely identifies each feature.
Options:
geoJSON property name
value
Column that determines the value displayed for each area (used for color scale)
Options:
column name
valueFmt
Format string for displaying the value.
Options:
format string

Color Scale

colorPalette
Array of colors used for theming the areas based on data
Options:
array of colors
min
Minimum value to use for the color scale.
Options:
number
Default:
min of value column
max
Maximum value to use for the color scale.
Options:
number
Default:
max of value column

Legend

legendType
Appends a categorical or scalar legend to the map
Options:
legendPosition
Determines the legend's position on the map, with options provided
Options:
Default:
bottomLeft

Interactivity

link
URL to navigate to when a area is clicked.
Options:
URL
name
Input name. Can be referenced on your page with ``
Options:
string

Styling

color
Color for the areas. Use when you want all areas to be the same color.
Options:
CSS color value
borderWidth
Width of the border around each area.
Options:
pixel value
Default:
0.75
borderColor
Color of the border around each area.
Options:
CSS color value
opacity
Opacity of the areas.
Options:
number between 0 and 1
Default:
0.8

Selected State

selectedColor
When area is selected: Color for the areas. Use when you want all areas to be the same color.
Options:
CSS color value
selectedBorderWidth
When area is selected: Width of the border around each area.
Options:
pixel value
Default:
0.75
selectedBorderColor
When area is selected: Color of the border around each area.
Options:
CSS color value
selectedOpacity
When area is selected: Opacity of the areas.
Options:
number between 0 and 1
Default:
0.8

Tooltips

showTooltip
Whether to show tooltips
Options:
Default:
true
tooltipType
Determines whether tooltips are activated by hover or click.
Options:
Default:
hover
tooltipClass
CSS class applied to the tooltip content. You can pass Tailwind classes into this prop to custom-style the tooltip
Options:
CSS class
tooltip
Configuration for tooltips associated with each area. See below example for format
Options:
array of objects

tooltip example:

tooltip={[
    {id: 'zip_code', fmt: 'id', showColumnName: false, valueClass: 'text-xl font-semibold'},
    {id: 'sales', fmt: 'eur', fieldClass: 'text-[grey]', valueClass: 'text-[green]'},
    {id: 'zip_code', showColumnName: false, contentType: 'link', linkLabel: 'Click here', valueClass: 'font-bold mt-1'}
]}

All options available in tooltip:

  • id: column ID
  • title: custom string to use as title of field
  • fmt: format to use for value
  • showColumnName: whether to show the column name. If false, only the value will be shown
  • contentType: currently can only be "link"
  • linkLabel: text to show for a link when contentType="link"
  • formatColumnTitle: whether to automatically uppercase the first letter of the title. Only applies when title not passed explicitly
  • valueClass: custom Tailwind classes to style the values
  • fieldClass: custom Tailwind classes to style the column names

Base Map

basemap
URL template for the basemap tiles.
Options:
URL
title
Optional title displayed above the map.
Options:
text
startingLat
Starting latitude for the map center.
Options:
latitude coordinate
startingLong
Starting longitude for the map center.
Options:
longitude coordinate
startingZoom
Initial zoom level of the map.
Options:
number (1 to 18)
height
Height of the map in pixels.
Options:
pixel value
Default:
300