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help with code

para = {"Age","Orientation","Preference","Salary","Number","SN","Years","Service"} //some of the column names needed 

main_table_col_remain = main_tab << get column names(string);

For( i = N Items( main_table_col_remain ), i > 0, i--,
 If(!Contains( main_table_col_remain[i],<FONT color="#FF0000"> ??</FONT> ) ,
  Remove From( main_table_col_remain, i )
 ));
 

What do i put in the "??" part? I've been circling around this code for a while now. I want to remove column names not stored in para.

Re: help with code

You had the comparison backwards.  You want to take the main_table_col_remain[1] and look into the para list to see if it is there then remove it from the main_table_co_remaining list

para = {"Age", "Orientation", "Preference", "Salary", "Number", "SN", "Years", "Service"}; //some of the column names needed 

main_table_col_remain = main_tab << get column names( string );

For( i = N Items( main_table_col_remain ), i > 0, i--,
 If( Contains( Para, main_table_col_remain[i] ),
  Remove From( main_table_col_remain, i, 1 )
 )
);

Re: help with code

follow up question, how do i tweak this code so that it does not split it individually? 

for(i=1, i<=n, i++,
 if((contains item(Para[i], main_table_col_remain) == 1),
  param = main_table_col_remain[i];
  tempdt =eval(parse( " combined_tab << Split(
  Split By(:Source_Table),
  Split(:Name(\!"" ||param|| "\!")),
  Remaining Columns(Drop All),
  Sort by Column Property 
  )"
  ))));
  

Re: help with code

If I am correctly reading what you want to do, all you need to do, is to place all of the main_table_col_remain columns into the Split definition at the same time.  Here is a simple example of splitting both Height and Weight by the Sex column in the Big Class sample data table

Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/big class.jmp" );<BR />dt << Split(
 Split By( :sex ),
 Split( :height, :weight ),
 Remaining Columns( Drop All ),
 Sort by Column Property
);

With the complex names you have in your data table, I would have a tendency to add :Name() to each element in your main_table_col_remain and in your case, turn the list into a string

myString = ":Name( \!"" || char(main_table_col_remain[1]) || "\!" )";
For( I = 2, I<= N Items( main_table_col_remain ), i++,
     myString = myString || ", :Name( \!"" || char(main_table_col_remain[i]) || "\!" )" ;
);

then you can add the entire list to the split

Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/big class.jmp" );

main_table_col_remain = dt << get column names( string, continuous );

myString = ":Name( \!"" || Char( main_table_col_remain[1] ) || "\!" )";
For( I = 2, I <= N Items( main_table_col_remain ), i++,
 myString = myString || ", :Name( \!"" || Char( main_table_col_remain[i] ) || "\!" )"
);

Eval(
 Parse(
  "
dtSplit = dt << Split(
 Split By( :sex ),
 Split( " || myString ||
  " ),
 Remaining Columns( Drop All ),
 Sort by Column Property
);"
 )
);