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jasongao
Level II

Variable Control limit plot

Hello,

I have a data table like below, with variable control limits. I would like to generate a control plot with spec lines. I can do it in overlay plot, but is there anyway I can do it in Fit Y and X plot, or control chart? Because I would like to modify the lengend for different groups, add fitting line etc, which I could not do on overlay plot. 

Thanks!

DataTimeLCLUCLTargetGroup
6369.3611/8/2019 13:07400070815540a
6220.43611/8/2019 15:15400070815540b
6553.12411/9/2019 16:15400070815540a
6659.49511/9/2019 17:54400070815540a
6153.04311/10/2019 6:49500080816540b
6587.2611/10/2019 18:40500080816540a
6922.83911/10/2019 22:53500080816540b
6608.83711/11/2019 0:44500080816540a
7134.38611/11/2019 23:22500080816540b
6936.43411/12/2019 0:51500080816540a
7339.77111/12/2019 7:34500080816540b

 

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1 ACCEPTED SOLUTION

Accepted Solutions
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Re: Variable Control limit plot

You can do this Control Chart Builder with a phase variable.  Here is a blog post that details the steps.

https://community.jmp.com/t5/JMPer-Cable/Creating-a-phase-control-chart-with-historical-limits-for-e...

View solution in original post

7 REPLIES 7
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cwillden
Super User

Re: Variable Control limit plot

You could do it in Graph Builder if you stack your Data, LCL, UCL, and Target columns by dropping the resulting Label column into the Overlay drop zone.  Are you sure you want your specs on your control chart?  That often drives bad behavior like not reacting to out of control points that are in spec.  Sorry, I know that is unsolicited advice.

-- Cameron Willden
Highlighted

Re: Variable Control limit plot

You can do this Control Chart Builder with a phase variable.  Here is a blog post that details the steps.

https://community.jmp.com/t5/JMPer-Cable/Creating-a-phase-control-chart-with-historical-limits-for-e...

View solution in original post

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cwillden
Super User

Re: Variable Control limit plot

The only downside to that is you can't fix your control limits. They will always be re-estimated from the data within each phase.
-- Cameron Willden
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Re: Variable Control limit plot

I'm not sure which method you are refering to when you say "They only downside to that is you can't fix your control limits."  My blog post details how to fix your control limits for each phase.  You can specify a different set of historical control limits for each phase of your data in Control Chart Builder.

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cwillden
Super User

Re: Variable Control limit plot

response got duplicated
-- Cameron Willden
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cwillden
Super User

Re: Variable Control limit plot

Sorry, I hadn’t read the blog post and didn’t realize you addressed that capability in the blog. I didn’t know that was possible to do
-- Cameron Willden
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mzwald
Staff

Re: Variable Control limit plot

Create a spec limit property for the column(s) that have specs and make sure you check the box that says "Show as Graph Reference Lines". Then any visual you make with those columns will show lines for the spec limits.

Similarly, you can also define control limits as a column property and they would show up in a control chart.