Tick count
<Plot marginTop={30}>
<AxisY tickCount={20} />
<AxisX tickCount={2} />
<Line data={aapl} x="Date" y="Close" />
</Plot>
<Plot marginTop={30}>
<AxisY tickCount={20} />
<AxisX tickCount={2} />
<Line data={aapl} x="Date" y="Close" />
</Plot>