topic Re: How to get Pareto/Histogram plot for failing parameters when using Process Capability platform? in Discussions

How to get Pareto/Histogram plot for failing parameters when using Process Capability platform?

Neo — Wed, 25 Oct 2023 16:58:46 GMT

I use the the example script below to select and color the out of spec values of each measured parameter in my test data set.

I want to create a pareto/histogram plot with measured parameter names (on x-axis) and number of fail occurrences (on y axis) per parameter and order the parameter names as decreasing with no of fails/parameter (i.e. to get a parameter fail pareto plot).

The first thing comes to mind is to get the number of selected/colored cells per parameter generated by the script below and then proceed from there. How to do this via JSL?

Process Capability(
	Process Variables( :NPN1, :PNP1, :PNP2 ),
	Moving Range Method( Average of Moving Ranges ),
	Overall Sigma Normalized Box Plots( 1 ),
	Color Out of Spec Values( 1 ),
	Select Out of Spec Values( 1 ),
	Goal Plot( 1 ),
	Capability Index Plot( 1 ),
	Process Performance Plot( 0 )
);

Re: How to get Pareto/Histogram plot for failing parameters when using Process Capability platform?

jthi — Wed, 25 Oct 2023 18:00:37 GMT

Using Process Capability might be easier as it provides Out of Spec Count and it can also color the cells

Edit:

Hide/Close platforms tables as needed

Names Default To Here(1);

dt = Open("$SAMPLE_DATA/Semiconductor Capability.jmp");

ps = dt << Process Screening(
	Process Variables(:NPN1, :PNP1, :PNP2),
	Control Chart Type("Indiv and MR"),
);
ps << Color Out of Spec Values(1); // this will also select rows and columns
dt << Clear Select << Clear Column Selection;

dt_ps = Report(ps)["Process Screening", Table Box(1)] << Make Combined Data Table;
// ps << Close Window;

gb_outofspec = dt_ps << Graph Builder(
	Size(528, 450),
	Show Control Panel(0),
	Variables(
		X(
			:Column,
			Order By(:Out of Spec Count, Descending, Order Statistic("Mean"))
		),
		Y(:Out of Spec Count)
	),
	Elements(Bar(X, Y, Legend(9), Label("Label by Value")))
);

Re: How to get Pareto/Histogram plot for failing parameters when using Process Capability platform?

SDF1 — Wed, 25 Oct 2023 18:14:40 GMT

Hi @Neo ,

I think going with @jthi 's suggestion to do a Process Screening might be a good way to go about getting a parameter fail pareto plot. From there, you can do a <<Make Into Data Table from the Process Screening Report, and as an example, you can do a Pareto Plot of the Out of Spec Count -- or whichever column is the one that is most interest to you.

The script below is pretty much just a direct save script to Scripting Window action at each step. A few extra things have been thrown in there, but this is essentially what you're interested in, at least as far as I understand your request.

Names Default to Here(1);

dt = Open("$SAMPLE_DATA/Semiconductor Capability.jmp");

ps = dt<<Process Screening(
	Process Variables( :NPN1, :PNP1, :PNP2, :NPN2, :PNP3 ),
	Control Chart Type( "Indiv and MR" )
);

rpt = New Window( "Semiconductor Capability - Process Screening",
	Data Table( "Semiconductor Capability" ) <<
	Process Screening(
		Process Variables( :NPN1, :PNP1, :PNP2, :NPN2, :PNP3 ),
		Control Chart Type( "Indiv and MR" )
	)
);

ps << Close Window;

pdt = rpt["Process Screening", Table Box( 1 )] << Make Into Data Table;

rpt << Close Window;

pp = pdt<<Pareto Plot( Cause( :Column ), Freq( :Out of Spec Count ) );

Hope this helps!,