Forum Discussion
Previous value from one calculated column
AlienSx Thanks for your solutions maybe I am doing someting wrong but there is still Expression.Error: A circular reference was encountered during evaluation. But this works for me :
= List.Transform(List.Skip(List.Accumulate(#"Zmenený typ1"[Rate], {1}, (s,c)=> s & {List.Last(s)/c})), Number.From)
but thanks i appreciate it
Formula can't find [Def] column in Source table. You either don't have a table named Source or colum named Def in there. Do you still have Zdroj table? Use it instead of Source in the code.
AlienSx Translation of Source is Zdroj in my language . I thaought that is ok to put there only "Source". I repleace Source with name of table and there is anothr error
Expression.Error: A circular reference was encountered during evaluation.
I completely overlooked that you are trying to create [Def] column with this code 😂 It's not going to work. Give me some time. Taking your numbers into consideration overflow comes sooner than later.
Anonymous what you are trying to do is recursive calculations. So you should be using something like this (via List.Accumulate)
= Table.AddColumn(Source, "DEF", (w) => List.Accumulate(List.FirstN(Source[Rate], w[Index]), 1, (s,c) => s/c))or write a recursive function and call it to create DEF column
f_recursive = (x, rates, i, max_i) => let a = x / rates{i} in if i = max_i then a else @f_recursive(a, rates, i+1, max_i), DEF = Table.AddColumn(Source, "DEF", (w) => f_recursive(1, Source[Rate], 0, w[Index] - 1))AlienSx Thanks for your solutions maybe I am doing someting wrong but there is still Expression.Error: A circular reference was encountered during evaluation. But this works for me :
= List.Transform(List.Skip(List.Accumulate(#"Zmenený typ1"[Rate], {1}, (s,c)=> s & {List.Last(s)/c})), Number.From)
but thanks i appreciate it