What is the purpose of the 45-degree reference line .
I am not understanding the use of the 45-degree reference line & I have created 45-degree reference line i which some of the -ve value coming above the 45 degree line but as far as i know +ve values comes above the 45 degree line and -ve values comes down the line.
Please correct me with right answer.
Is there more context to this question? There is a knowledge base article and example video here: Diagonal Reference Line | Tableau Software http://kb.tableau.com/articles/howto/Diagonal-Reference-Line
I hope this helps.