Heat map

Icon Map Pro has the ability to create heat maps from point data.

Data setup

To configure the data well for a heatmap, the following fields should be populated:

• ID - unique ID for that location and item
• Longitude
• Latitude
• Heatmap weight - the value for that location

Sample data

ID	Longitude	Latitude	Destination Longitude	Destination Latitude	Circle Size	H3 Weight	Heatmap Weight	Image / WKT / GeoJSON	Feature Reference	Daylight Date & Time	Tooltips
Location1	-2.576	51.481	null	null	null	null	45	null	null	(optional)	null
Location2	-2.955	51.332	null	null	null	null	34	null	null	(optional)	null

Heatmap configuration

Include in Auto Zoom

Whether that item should be included when the map zooms to data-bound locations. This field can be set using a measure of field value of yes or no set with conditional formatting, to include or exclude specific rows of data.

Units

This dropdown can be set to:

• Pixels - The heatmap will be based on pixels on the screen, and therefore change as you zoom in and out on the map, with points becoming more sparse as you zoom.
• Meters - The heatmap will be based on coverage on the ground, and therefore be static as you zoom in and out, with the same amount of area shaded.

The option selected here will impact how you configure the following three options in order to achieve an appropriate heatmap.

Size

How much area area point covers

Multiplier

The intensity values of points

Alpharange

At which point the heatmap takes effect

Transparency

How transparent the heatmap is.

EPSG (Coordinate Reference System)

Allows you to specify a specific reference system for your coordinates. The default used is EPSG:4326 / WGS84 and expects longitude and latitude coordinates. You can use other coordinate systems by specifying the relevant EPSG number. For example, to use British National Grid coordinates, enter 27700. Other EPSG codes can be found here.

Heatmap Formatting

It is possible to configure up to 5 colors to use in the Heatmap color gradient: