topic Multiple control charts with user defined K value where the number and names of the Y variables are unknown in Discussions

Multiple control charts with user defined K value where the number and names of the Y variables are unknown

NBrammer — Thu, 07 Aug 2025 11:25:55 GMT

I'm trying to write a robust script that will allow the user to specify a Sigma K value and select Y columns from a list of all the continuous columns and create the L-J charts for each and save the limits to a tall data table.

The script isn't creating any errors but isn't creating the graphical output.

I can't see where I'm going wrong, script below and attached

Thanks

Names Default To Here(1);

dt = Current Data Table();

// Get list of continuous columns
contCols = {};
For(i = 1, i <= N Cols(dt), i++,
	col = Column(dt, i);
	If(col << Get Modeling Type == "Continuous",
		Insert Into(contCols, col << Get Name)
	);
);

If(N Items(contCols) == 0,
	Show Message(
		"No continuous columns found.", "Please ensure your data table has continuous columns."
	);
	Stop();
);

// Dialog for selecting columns and k
colList = .;
kNum = .;
dialogResult = .;

nw = New Window("Levey-Jennings Chart Setup",
	<<Modal,
	V List Box(
		Text Box("Select up to 50 continuous columns:"),
		colList = List Box(contCols, maxSelected(50)),
		Text Box("Enter k (number of SDs for Shewhart control limits):"),
		kNum = Number Edit Box(3)
	),
	H List Box(
		Button Box("OK",
			Expr(
				dialogResult = 1;
				nw << Close Window;
			)
		),
		Button Box("Cancel",
			Expr(
				dialogResult = 0;
				nw << Close Window;
			)
		)
	)
);

If(dialogResult == 1,
	selectedCols = colList << Get Selected;
	k = kNum << Get;
	If(N Items(selectedCols) == 0,
		Show Message("No columns selected.", "Please select at least one column.");
		Stop();
	);

// Build an array of column references for Y()
	yColsArray = {};
	For(i = 1, i <= N Items(selectedCols), i++,
		Insert Into(yColsArray, Column(dt, selectedCols[i]))
	);

// Launch Control Chart Builder with expanded array using Eval List()
	dt << Control Chart Builder(
		Show Two Shewhart Charts(0),
		K Sigma(k),
		Variables(Y(Eval List(yColsArray))),
		Chart(Points(Statistic("Individual")), Limits(Sigma("Levey Jennings"))),
		Show Control Panel(0)
	);
,
	Print("Dialog canceled.")
);

Edit (jthi): added jsl formatting

Re: Multiple control charts with user defined K value where the number and names of the Y variables are unknown

jthi — Thu, 07 Aug 2025 11:39:53 GMT

There are plenty of mistakes in the script and I assume it was created by some LLM. If you wish to do scripting in JMP outside of JMP created scripts, I suggest you check out Scripting Guide .

Names Default To Here(1);

dt = Current Data Table();

nw = New Window("Levey-Jennings Chart Setup", << Type("Modal Dialog"),
	H List Box(
		Lineup Box(N Col(1),
			Text Box("Select up to 50 continuous columns:"),
			fcs = Filter Col Selector(dt, << Nominal(0), << Ordinal(0), << Continuous(1), Character(0), << Set Max Selected(50)),
			Text Box("Enter k (number of SDs for Shewhart control limits):"),
			neb = Number Edit Box(3)
		),	
		Lineup Box(N Col(1),
			Button Box("OK",
				selcols = fcs << get selected;
				ksig = neb << get;
			),
			Button Box("Cancel")
		)
	)
);

If(nw["Button"] != 1,
	Throw("Cancelled");
);

If(N Items(selcols) == 0,
	Throw("No columns selected");
);

collist = Transform Each({colname}, selcols, Name Expr(AsColumn(dt, colname)));
Substitute Into(collist, Expr(List), Expr(Y));

ccb = Eval(EvalExpr(dt << Control Chart Builder(
	Show Two Shewhart Charts(0),
	K Sigma(Expr(ksig)),
	Variables(Expr(Name Expr(collist))),
	Chart(Points(Statistic("Individual")), Limits(Sigma("Levey Jennings"))),
	Show Control Panel(0)
)));

Re: Multiple control charts with user defined K value where the number and names of the Y variables are unknown

NBrammer — Thu, 07 Aug 2025 12:03:47 GMT

Thank you - perfect

I'll go through line by line and try and understand what's happening

Re: Multiple control charts with user defined K value where the number and names of the Y variables are unknown

Ben_BarrIngh — Thu, 07 Aug 2025 12:06:30 GMT

Hi @NBrammer ,

I really like this guide from Don McCormack about running platforms without knowing the column names or number of: https://community.jmp.com/t5/JSL-Cookbook/Run-a-Platform-without-Knowing-the-Number-or-Names-of-Columns/ta-p/464407

Thanks,

Ben