This demo showcases several powerful concepts. Let's take a look.
<h2>Duration axis</h2>
There's a special type of axis that can reformat the values into any kind of "duration". The units and formats are fully configurable.
[amcharts2_button href="https://www.amcharts.com/docs/v4/concepts/axes/#Duration_axis"]More info about Duration axis[/amcharts2_button]
<h2>Multiple axis</h2>
The chart you see above has three vertical axis (one is intentionally hidden). Each series, which uses data values on the whole different scale, has own axis.
[amcharts2_button href="https://www.amcharts.com/docs/v4/chart-types/xy-chart/#Multiple_axes"]More info about multiple axes[/amcharts2_button]
<h2>Binding properties of chart elements to data</h2>
Size of the bullets on the "Latitude" series is bound to a data, using its "property fields". This is a very powerful concept, which allows binding <strong>any</strong> property of <strong>any</strong> object to a value in data.
In this case we bind <code>radius</code> of the circle bullet to the <code>townSize</code> field in data.
[amcharts2_button href="https://www.amcharts.com/docs/v4/concepts/data/#Property_fields"]More info about property fields[/amcharts2_button]