MarkerPoint Class
The MarkerPoint class represents a POINT marker on a graph. It can be used to customize point marker style and options.
Some attributes can be read and changed with get and set :
index: The marker point position (index).linecolor: The marker line color.lineorder: The position of the line elements with respect to the data lines, one of ABOVE or BELOW, before.linestyle: The marker line style (SOLID, DOTTED, DASHED).linewidth: The marker line width.value: The marker position (a date in the axis date format). The markers will point to the closest value.xlabelposition: The X position of the marker text (a dataset x value).ylabelposition: The Y position of the marker text (a dataset y value).