This chapter gives you some background about Data Lens and what you need to know to get started with this Tutorial.
What is Data Lens?
What do I need to start working with Data Lens?
To access Data Lens, you first need to sign up for a HERE Account on the following website:
Then, you need to sign up to a business plan to access Data Lens. You can request this on the following page, selecting "Data Lens" in the list:
The credentials you receive to work with Data Lens are a pair of personalized access codes, your
app_code. These codes are associated with individual HERE products, and you need valid codes to access Data Lens.
What is this tutorial about?
Note that Data Lens provides a number of 'starter pack' datasets. In this tutorial, you will load these datasets to your account, and you can use them in your own visualizations to help you get to know Data Lens.
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 dataset in your Data Lens account.
- Create a query on the data using the Data Lens REST API query language.
- Publish the query to make it publicly available.