<ST_MarkerCoordinate>
(Chart Marker Coordinate Value)
This simple type specifies the chart marker coordinate value. It is to be represented as a fractional position between 0.0 and 1.0 of the chart width or height with 0.0 being the left or top edge.
This simple type's contents are a restriction of the XML Schema double datatype.
This simple type also specifies the following restrictions:
This simple type has a minimum value of greater than or equal to 0.0.
This simple type has a maximum value of less than or equal to 1.0.