Plotting strip for dynamic data which can also be used as a sparkline. Data may be supplied one value at a time (as when reading sensor or other data) or can be supplied as an NSArray (as when using as a sparkline). Color, plot width, etc. are all customizable. The control can also update a UILabel (or derivative) instance dynamically when values are added, and a user-specified format string allows you to control the formatting of the displayed value.