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tarkan_bih
Level III

Convert a list of strings into a column names

I am trying a to run a script that uses a regex to find column names and puts them in a list to then stack. I am struggling to get the actual stack part to work and I think it has to do with the list containing strings rather then column names. Is there a way to convert a list strings into column names?

 

ref = open(dir||datafile);

allColNames = ref << getcolumnnames;
edgeCols = {};

Ncols = N items(allColNames);
for(i = 1, i <= Ncols, i++,
	cname = Column(allColNames[i]) << get Name;
	if(!Is Missing (regex(cname,"EDGE\d+") ),
		insert into(edgeCols,cname);
	);
);


edge stack = ref << stack(
	columns(EdgeCols),
	Source Label Column("Label");
	Source Data Column("Data");
	Output Table("Stack");
);
1 ACCEPTED SOLUTION

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gzmorgan0
Super User

Re: Convert a list of strings into a column names

Your syntax for stack is incorrect:

  • there are semicolons where there should be commas
  • it is not Source Data Column but Stacked Data Column
edge stack = ref << stack(
	columns( edgeCols),
	Source Label Column("Label"),
	Stacked Data Column("Data"),
	Output Table("Stack")
);

View solution in original post

1 REPLY 1
Highlighted
gzmorgan0
Super User

Re: Convert a list of strings into a column names

Your syntax for stack is incorrect:

  • there are semicolons where there should be commas
  • it is not Source Data Column but Stacked Data Column
edge stack = ref << stack(
	columns( edgeCols),
	Source Label Column("Label"),
	Stacked Data Column("Data"),
	Output Table("Stack")
);

View solution in original post

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