# Event display¶

This page describes how the Event display works. With this web application you can see HiSPARC events occuring on a map.

The event display for Science Park.

## Markers¶

The map will show two kinds of markers:

• events are air showers detected by a single HiSPARC station
• coincidences are air showers detected by multiple HiSPARC stations simultaneously

Their respective colors are shown in the legend in the topright.

Marker legend.

## Choose cluster¶

In the bottom right of the page is a dropdown menu from which a subcluster can be selected. Events and coincidences from the chosen subcluster will be shown on the map.

The chosen subcluster will be set as the location hash of the page. So if Amsterdam is chosen the url ends in #amsterdam. If the page is loaded without a hash it will default to the Science Park cluster, automatically setting the hash to that value.

## JSON data¶

If you want to use Chrome when running this page locally it needs to be started with the --allow-file-access-from-files option.