A D3 scatter plot shows the Richter of earthquakes occured from 1900 to 1999.

Brush:

1. Select:

In selected area, circles become red.

1. Double click:

If user has already selected an area, user can unselect it by double clicking in this area. If user has not selected area, double click will select all circles.

Data: Earthquakes Dataset.

Y-axis:

Richter of earthquakes

X-axis:

Timeline

Radius:

Deaths of earthquakes