Instance of ProcessPerformance are constructed from a vector of input data measurements, and lower and upper specification limits.
ProcessPerformance provides the following properties:
● Ppk gets the process performance index.
● Pp gets the process performance.
Code Example – C# process control
DoubleVector data = ... double LSL = 1.90; double USL = 2.10; var pp = new ProcessPerformance( data, LSL, USL ); Console.WriteLine( pp.Ppk );