Geovisualization Developer's Guide


This section covers what Geovisualization is and what you need to know to get started with this Tutorial.

What is Geovisualization?

HERE Geovisualization is a cloud-based API toolkit for developing sophisticated visualizations of geographically-related data, accessible in a web browser. Raw data is queried via a REST API from the Geovisualization cloud, and transformed and aggregated to provide input to the JavaScript API, which renders the visualization on HERE maps.

The Geo-visualization JavaScript API is a module that connects the Geovisualization cloud to the HERE Maps JavaScript API.

What is this Tutorial About?

This tutorial will show you how to create a map visualization. It will fetch and process data using the Geo-visualization REST API and its query language, and then use the Geo-visualization JavaScript API to plot data-driven markers on a map. In this example, you will upload a sample datasource to your account on the Geovisualization backend and use it in your projects.

The example plots earthquake events on a map of the world. The events are represented on the map with symbols, called "proportional markers", whose size, color, and opacity vary according to the magnitude and depth of each earthquake. The marker's size indicates the magnitude of the earthquake, and its color indicates the depth of the earthquake epicenter. We also define a relative opacity on the marker symbols to indicate the relative epicenter depth.

The steps you will follow in this tutorial are the following:

  • Initialize the earthquake data source in your Geovisualization account.
  • Create a query on the data using the Geo-visualization REST API query language.
  • Publish the query to make it publicly available.
  • Design the proportional markers representing the data using the Geo-visualization JavaScript API.

Get a HERE Account

To access Geovisualization, go to and sign up for a HERE account

Get a HERE Plan

When you have an account, register for a 90-day Free Trial plan on the HERE website:

Generate App ID and App Code

On the project page for the newly created plan, click the blue Generate App ID and App Code button under the JavaScript/REST heading to generate the App ID and App Code you will need for Geovisualization.

You cannot use this account to purchase a commercial plan on Developer Portal, as it is already associated to plans with different payment methods.

To purchase a commercial plan on Developer Portal, please register for or sign in with a different HERE Account.

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