Help extracting name of variable transformed on the fly

yvesprairie

Hi all,

 

I need help with a seemingly simple problem but for which I cannot find a solution. I have written a JSL code to do some computation and the first things it does is open a Column Dialog window where one can choose table columns and put them into different roles (in my case X and Y variables). What I need to do is to get the names of these table columns so that I can use them later on to show the axis names (using the Yname and Xname functions) in a Graph box . All is fine when the table columns are directly used. However, if I do a transformation on the fly by right-clicking the variable before assigning to a role in the Column Dialog window, then things get more complicated.  Normally, I would use something like:

 

 

yn= as column(eval( cdw["yv"])) << Get Name;

 

where cdw in the object return by the column dialog window. However, in the case of a transformed variable, it will produce 

yn = deleted object reference[];

 

If I break down the problem, the eval( cdw["yv"])) would yield a one element list looking like:

 

{Transform Column("Log10[Name of Table colum]",Formula( Log10( :Name( "Name of Table colum" ) ) ))}

 

How can I extract from that just the portion Log10[Name of Table colum] so that I can use it in a Yname or Xname statement in a Graph Box??

 

Many thanks for any help you can provide.

 

Regards, Yves

Jeff_Perkinson

The arg() function will get you there.

 

Names Default To Here( 1 );
Open( "$SAMPLE_DATA/Consumer Preferences.jmp" );
cd=Column Dialog(
	ex y = ColList( "Y", Min Col( 1 ), Max Col( 2 ), Data Type( "Numeric" ) ),
	ex x = ColList( "X",
		Max Col( 1 ),
		Modeling Type( {"Continuous", "Multiple Response"} )
	),
	Line Up( 2,
		Text Box( "Alpha" ), ex = EditNumber( .05 ),
		Text Box( "Beta" ), ey = EditText( "xyz" )
	),
	HList( cb = Check Box( "check", 1 ) ),
	HList( combo = Combo Box( "option1", "option2" ) ),
	HList( rb = RadioButtons( "a", "b" ) )
);

foo=arg(cd["ex y"][1], 1);