Updating pre-selected column group based on user input

rahulsmils

I am trying to plot something on variability chart repeatedly with same X values but different Y.

Initially, I made X as one variable and subsequent code refers to the same X with different Y every time:

//-------------Begin code------------------

dt << Group Columns( "xlist", {:oceans, :continents, :volcanoes} );

//-------- Call variability charts-------//

Variability Chart(

  Y( :Name( "Planet" ) ),

  X(dt << get column group( "xlist" )),

..........

//------------End Code--------------------

Right now I have three columns in xlist: oceans,continents,volcanoes, which go to X argument list of Variability chart.

Assume there are 100 more columns like this in data table.

1) I want to present the user a choice to edit contents of xlist in a GUI pop-up window.

The user can add more columns or delete any of pre-selected columns.

He may choose to not to modify anything and this list goes unedited to X variable then.

2) I wish the order of items passed to the argument is retained.

Right now the variability chart does not retain the original sequence of items while arranging on the x-axis.

Perhaps get column group( "xlist" ) returns the contents in a different order than assigned to xlist.

I tried it using lists and Eval but it did not help to retain order.

I wish to control the order of x-arguments when they are plotted on variability chart.

Please suggest the best way of implementing this.

Thanks.

ms

Names Default To Here(1);

dt = Open("$SAMPLE_DATA/Big Class.jmp");

cd = Column Dialog(xvar = ColList("X", columns({age, sex, name})));

// Group columns (if really necessary)

Eval(Eval Expr(dt << group columns("xlist", Expr(cd["xvar"]))));

// Chart directly, without using group, to retain order

Variability Chart(Y(:Name("weight")), X(cd["xvar"]));

// Charting using column group will

// return col order that may differ from user input

Variability Chart(Y(:Name("weight")), X(dt << get column group("xlist")));