topic Re: JMP script to create control charts with phases in Discussions

JMP script to create control charts with phases

js1985 — Sun, 11 Jun 2023 11:23:53 GMT

Hi everyone,

I'm asking your support because I need to create control chart with fixed limits and phases and I want to get a script out of it.

I managed to created a DT with the limit keys and values and to create the control charts I need from "legacy control charts>Levey-Jennings" and then to get limits from the DT created before.

Now, when I save the script I'm not getting any reference to the limits DT therefore if I rerun it I'm getting automatically calculated limits.

Can you please give me an hint on how to embed the "get limits" function in the script?

Below the piece of script I obtained so far.

Thanks.

Control Chart(
	Sample Label( :Data ),
	Phase( :Phase ),
	KSigma( 3 ),
	Chart Col( :Li, Levey Jennings( Phase Level( "1" ), Phase Level( "2" ) ) ),
	Chart Col( :Na, Levey Jennings( Phase Level( "1" ), Phase Level( "2" ) ) ),
	Chart Col( :Mg, Levey Jennings( Phase Level( "1" ), Phase Level( "2" ) ) ),
	Chart Col( :Al, Levey Jennings( Phase Level( "1" ), Phase Level( "2" ) ) ),
	Chart Col( :Cr, Levey Jennings( Phase Level( "1" ), Phase Level( "2" ) ) ),
	Chart Col( :Ni, Levey Jennings( Phase Level( "1" ), Phase Level( "2" ) ) ),
	Chart Col( :Ga, Levey Jennings( Phase Level( "1" ), Phase Level( "2" ) ) ),
	Chart Col( :K, Levey Jennings( Phase Level( "1" ), Phase Level( "2" ) ) )
);

Re: JMP script to create control charts with phases

Mark_Bailey — Thu, 21 Apr 2022 14:45:31 GMT

JMP is looking for the pre-determined control limit information in a data column property. Define this property for each data column that is to be plotted before launching the control chart.

Re: JMP script to create control charts with phases

Georg — Thu, 21 Apr 2022 20:50:15 GMT

In addition to markbailey's outline here is an example (from scripting index + added spec limits) that illustrates how this can be done

Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/Quality Control/Coating.jmp" );

dt:Weight << Set Property(
	"Control Limits",
	{Levey Jennings( Avg( 20.396875 ), LCL( 19 ), UCL( 21 ) )}
);
		
obj = dt << Control Chart(
	Sample Size( :Sample ),
	KSigma( 3 ),
	Chart Col( :Weight ),
	Chart Type( Levey Jennings )
);

Re: JMP script to create control charts with phases

js1985 — Fri, 22 Apr 2022 06:42:11 GMT

Thanks Mark and Georg,

the solution to set the limits into the column property is working but doesn't fit my need to "store" historical limits in the control chart.

I need to store all my data in a DT where I indicate the corresponding phases, the script should pickup the data and plot them against the limits and phases store in the limits DT. How can I replicate in a script the "get limits" function which is in the legacy control chart menu?

Re: JMP script to create control charts with phases

Mark_Bailey — Fri, 22 Apr 2022 11:29:09 GMT

You can also store the limits in a data table instead of a specific column property. Have you read the documentation for the legacy control charts?

Re: JMP script to create control charts with phases

tonya_mauldin — Mon, 25 Apr 2022 11:55:45 GMT

Here is a blog post that details how to do this with the newer control chart builder platform.

Creating a phase control chart with historical limits for each phase - JMP User Community

This functionality will not work for legacy Levey Jennings charts.