scrollPositionX property
The initial scrolling position of the scrollable plot area. Ranges from 0 to 1, where 0 aligns the plot area to the left and 1 aligns it to the right. Typically we would use 1 if the chart has right aligned Y axes.
API Docs: https://api.highcharts.com/highcharts/chart.scrollablePlotArea.scrollPositionX
Implementation
double? scrollPositionX;