Create Column that averages values from each column where the column title = 'x'

[DizzyAy]

I have a table similar to the below

ID	Name	1.abc	1.def	NewColumn1	2.abc	2.def	NewColumn2
1	Jack	2	2	2	1	3	2
1	Jill	2	4	3	1	1	1

I want to add NewColumn1 and NewColumn2 to basically look for all columns that has a 1 as the first character of the title and then average those columns.

Is this possible?

Thanks,

[tamerj1 · Accepted solution]

Hi @DizzyAy 
I guess you have a variable huge number of columns that you cannot unpivot for some reason(s). I would recommend the following solution as per the attached sample file which works only as a measure (a calculated column using the same approach is not possible).

1.Sum = 
SUMX (
    'Table',
    VAR T1 = CALCULATETABLE ( 'Table' )
    VAR String1 = TOCSV ( T1, 1, ",", TRUE )
    VAR Items1 = SUBSTITUTE ( String1, UNICHAR ( 10 ), "|" )
    VAR T2 = SELECTCOLUMNS ( { ( 1, 2 ) }, "@Headers", PATHITEM ( Items1, 1 ), "@Details", PATHITEM ( Items1, 2 ) )
    VAR T3 =
        GENERATE ( 
            T2, 
            VAR HeaderString = [@Headers]
            VAR HeaderItems = SUBSTITUTE ( HeaderString, ",", "|" )
            VAR DetailString = [@Details]
            VAR DetailItems = SUBSTITUTE ( DetailString, ",", "|" )
            VAR Length = PATHLENGTH ( HeaderItems )
            VAR T4 = GENERATESERIES ( 1, Length, 1 )
            RETURN
                FILTER ( 
                    SELECTCOLUMNS ( 
                        T4, 
                        "@Header", PATHITEM ( HeaderItems, [Value] ),
                        "@Detail", PATHITEM ( DetailItems, [Value] ) 
                    ),
                    CONTAINSSTRING ( [@Header], "1" ) 
                )
        )
    RETURN
        SUMX ( T3, VALUE ( [@Detail] ) )
)