CPK with one limit

[JDeckert]

Does DIAdem have a way of calculating process capability with only one limit. This can be done in Minitab, but I've been unable to find reference to a way of doing it in DIAdem. The way I'm getting around it now is to calculate the second limit based on the data, then calculating CPK.

Thanks,

James

[ianidas300]

I am not completely familiar with this calculation and the statistics operations that it performs. This help documentation discusses the results that are processed from this calculation:

http://zone.ni.com/reference/en-XX/help/370858K-01/dlgmaths/calc_statistics_dlg/dlgspcprocesscap_dia...

It looks like the pictures referencing the calculations are broken but the all of the variables that store the results are shown.

[JDeckert]

That is the reference to how to calculate Process Capability with two limits. Not very helpful (unless I'm missing something).

[ianidas300]

Looking at the documentation I sent you the SPCCpU and SPCCpL are the one sided upper process capability index and the one sided lower process capability index. From what I understand, isn't that the information you are looking to calculate?