topic Re: JSL script to create or condition by looping thorough column names in a list in Discussions

JSL script to create or condition by looping thorough column names in a list

OrdinaryParrot2 — Fri, 09 Jun 2023 16:07:54 GMT

I'd like to create a function in jsl that takes a given list of column names as input, uses those columns to do a OR condition, and outputs a column with that looping OR formula. How do U do that?

input_col_list = { "a", "b", "c"};
input_dt = dt;
x = 0.1;
input_dt << New Column("d", numeric, continuous, 
formula ( 
If(
(As Column("a") >= x  |  As Column("b") >= x  | As Column("c") >=  x), 
1,
0
) 
));

For above, I would like to make a function like below:

my_func =
Function(
{input_dt, input_col_list, x},
{//local var},
// function body
...
Return As column("d")
);

Re: JSL script to create or condition by looping thorough column names in a list

txnelson — Fri, 14 Apr 2023 05:36:44 GMT

Here is an example of one way to do it.......others may have more eloquent ways

Names Default To Here( 1 );
dt = 
// Open Data Table: Big Class.jmp
// → Data Table( "Big Class" )
Open( "$SAMPLE_DATA/Big Class.jmp" );

my_func = Function( {input_dt, input_col_list, x},
	{input_dt, input_col_list, x, the_cmd},
	input_dt << New Column( "d" );
	current data table(input_dt);
	the_cmd = "current data table():d << set formula( If(  current data table():\!"" ||
	Char( input_col_list[1] ) || "\!"n >= " || Char( x );
	For( i = 2, i <= N Items( input_col_list ), i++,
		the_cmd = the_cmd || " | current data table():\!"" || Char( input_col_list[i] ) || "\!"n >= "
		 || Char( x )
	);
	the_cmd = the_cmd || ", 1, 0) );";
	Eval( Parse( the_cmd ) );
);

input_col_listx = {"Height", weight};
dtx = Data Table( "big class" );
xx = 101;

theReturn = my_func( dtx, input_col_listx, xx );

Re: JSL script to create or condition by looping thorough column names in a list

jthi — Fri, 14 Apr 2023 05:40:55 GMT

Building this using strings is most likely most simple option as the expression is quite simple one. But... I don't like using Eval(Parse()) so here are few options which are not using that (second option might not do what you want with missing values)

Names Default To Here(1);

dt = New Table("Untitled 3",
	Add Rows(0),
	Compress File When Saved(1),
	New Column("a", Numeric, "Continuous", Format("Best", 12), Set Values([0,1])),
	New Column("b", Numeric, "Continuous", Format("Best", 12), Set Values([0,0])),
	New Column("c", Numeric, "Continuous", Format("Best", 12), Set Values([0,0]))
);
input_col_list = {"a", "b", "c"};
x = 0.1;

// using Or
or_expr = Expr(Or());
// https://community.jmp.com/t5/JSL-Cookbook-Archived/Insert-one-expression-into-another-using-Eval-Insert-Eval-Expr/ta-p/48998
For Each({col_name}, input_col_list,
	col_expr = Substitute(
		expr(_col_ref_ >= _comparison_value_),
		Expr(_col_ref_), NameExpr(AsColumn(Column(dt, col_name))),
		Expr(_comparison_value_), x
	);
	Insert Into(or_expr, Name Expr(col_expr));
);
// Show(name expr(or_expr));
Eval(EvalExpr(dt << New Column("d", Numeric, Continuous, Formula(
	If(Expr(name expr(or_expr)), 1, 0)
))));


// using matrix and any
col_refs = Transform Each({col_name}, input_col_list,
	Name Expr(As Column(Column(dt, col_name)));
);
Eval(EvalExpr(dt << New Column("d", Numeric, Continuous, Formula(
	Any(Matrix(Expr(col_refs)) >= Expr(x))
))));


// function of second option
create_check_col = function({dt, col_input, limit_val}, {Default Local},
	col_refs = Transform Each({col_name}, col_input,
		Name Expr(As Column(Column(dt, col_name)));
	);
	
	new_col = Eval(EvalExpr(dt << New Column("d", Numeric, Continuous, Formula(
		Any(Matrix(Expr(col_refs)) >= Expr(limit_val))
	))));
	
	return(new_col);
);
create_check_col(dt, input_col_list, x);