Blog
All Blog Posts | Next Post | Previous PostCreating Heatmaps in TMS FNC Maps for Delphi
Tuesday, November 19, 2024
Heatmaps are a powerful way to visualize data, revealing patterns that might not be immediately obvious in raw data. With TMS FNC Maps, adding a heatmap to your application is straightforward and flexible. This blog post will guide you through the process of creating a heatmap using the AddHeatMap
method.
What is a Heatmap?
A heatmap displays data points using varying colors to represent different values. In TMS FNC Maps, each data point can have an optional weight value, which intensifies the color representation, making it easier to identify areas of higher density or importance.
Adding a Heatmap to your Map
To display a heatmap, you need an array of coordinates. Each coordinate will act as a data point on the map. Here's a basic example:
var ca: TTMSFNCMapsCoordinateRecArray; hm: TTMSFNCMapsHeatMap; begin SetLength(ca, 2); ca[0].Latitude := 37.782551; ca[0].Longitude := -122.445368; //Optional setting ca[0].Weight := 1; // ca[1].Latitude := 37.782745; ca[1].Longitude := -122.444586; //Optional setting ca[1].Weight := 1; // TMSFNCGoogleMaps1.BeginUpdate; hm := TMSFNCGoogleMaps1.AddHeatMap(ca); //Optional settings hm.Opacity := 1; hm.GradientStartColor := gcGreen; hm.GradientMidColor := gcYellow; hm.GradientEndColor := gcRed; // TMSFNCGoogleMaps1.EndUpdate; end;
Customizing Your Heatmap
You can adjust the data point weight, opacity and gradient colors to match your specific visualization needs.
Key Parameters
Coordinates: An array where each entry represents a data point.
Weight: Optional; a weight value that affects the intensity of the data point.
Opacity: Adjusts the transparency of the heatmap.
Gradient Colors: Define the start, mid, and end colors for the heatmap gradient, enabling smooth transitions between colors.
Supported Mapping Services
The Heatmaps functionality is supported by the following mapping services:
Google Maps
HERE Maps
OpenLayers
Leaflet
Conclusion
Heatmaps are a great way to represent complex data visually. With TMS FNC Maps, you can easily add and customize heatmaps to enhance your application's data visualization capabilities. Whether you're highlighting high-density areas or showing patterns over a geographic region, heatmaps can make your data more accessible and easier to understand.
Available Now
Ready to enhance your project with powerful mapping visualizations using TMS FNC Maps?
Download the latest version of TMS FNC Maps and get started today!
Bart Holvoet
This blog post has received 2 comments.
We''ll investigate if the radius parameter can be exposed in a future TMS FNC Maps version.
Bart Holvoet
All Blog Posts | Next Post | Previous Post
Hammer Øyvind