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lpatton

Community Trekker

Joined:

Oct 22, 2014

How do I compare column values in loop using indexed naming.

I am trying to create a column and assign that column a value to a column only when the values in two other columns are equivalent.   I have to use indexed naming as I am in a loop and will not always know what the column name is or what the number is (see image below).  The script creates the new column but does not correctly evaluate my formula.    Please help!

 

 

 

RamanFail.png

 

 

My Script:

dt<< New Column(RamanPeakList[NameIndex] || " Peak", <<Set Each Value( 
			If( Column(RamanPeakList[NameIndex] || " Peak Intensity") == Column("Temp"||RamanPeakList[NameIndex]), 
			:Raman Shift)));
1 ACCEPTED SOLUTION

Accepted Solutions
txnelson

Super User

Joined:

Jun 22, 2012

Solution

Re: How do I compare column values in loop using indexed naming.

If you were using a formula to set the values, then you code would probably work.  However, since you are using Set Each Value, I assume that you need to specify the specific row value to do the calculation on.  The below script worked for me

dt << New Column( RamanPeakList[NameIndex] || " Peak",
	<<Set Each Value(
		If(
			Column( RamanPeakList[NameIndex] || " Peak Intensity" )[Row()] == Column(
				"Temp" || RamanPeakList[NameIndex]
			)[Row()],
			:Raman Shift
		)
	)
);
Jim
1 REPLY 1
txnelson

Super User

Joined:

Jun 22, 2012

Solution

Re: How do I compare column values in loop using indexed naming.

If you were using a formula to set the values, then you code would probably work.  However, since you are using Set Each Value, I assume that you need to specify the specific row value to do the calculation on.  The below script worked for me

dt << New Column( RamanPeakList[NameIndex] || " Peak",
	<<Set Each Value(
		If(
			Column( RamanPeakList[NameIndex] || " Peak Intensity" )[Row()] == Column(
				"Temp" || RamanPeakList[NameIndex]
			)[Row()],
			:Raman Shift
		)
	)
);
Jim