How to create slicer for table columns

[Anonymous]

Hello

I have the following table loaded in Power Query which shows the attendance of people starting from 1 January 2022 until 31 December 2022. In Power BI, i would like to have a slicer with selectable names or a way to allow the report reader to display the attendance by name. I'm not sure how to do this - should an extra column be added in Power Query or is there some DAX to make this work? Any help is much appreciated!!

Date	Lizui	Laufenburg	Tegalpapak	Ar Rabiyah	Bellegarde	Gangarampur
01/01/2022	1	1	1	1	1	1
02/01/2022	1	0	1	1	1	1
03/01/2022	1	0	1	1	1	1
04/01/2022	1	0	1	1	1	1
05/01/2022	1	0	1	1	1	1
06/01/2022	1	0	1	1	1	1
07/01/2022	1	0	1	1	1	1
08/01/2022	1	0	1	1	1	1
09/01/2022	1	0	1	1	1	1
10/01/2022	1	0	1	1	1	1
11/01/2022	0	0	1	1	1	1
12/01/2022	0	0	1	1	1	1
13/01/2022	0	0	1	1	1	1
14/01/2022	0	0	1	1	1	1
15/01/2022	0	0	1	1	1	1
16/01/2022	0	0	1	1	1	1
17/01/2022	0	0	1	1	1	1
18/01/2022	0	0	1	1	1	1
19/01/2022	0	0	1	1	1	1
20/01/2022	0	0	1	1	1	1
21/01/2022	0	0	1	1	1	1
22/01/2022	1	0	0	1	1	1
23/01/2022	1	0	0	1	1	1
24/01/2022	1	0	0	1	1	1
25/01/2022	1	0	0	1	1	1
26/01/2022	1	0	0	1	1	1
27/01/2022	1	0	0	1	1	1
28/01/2022	1	0	0	1	1	1

[Jos_Woolley · Accepted solution]

Hi,

So you've currently set it up so that each column is for a different person? Would strongly suggest unpivoting in Power Query, e.g.:

let
    Source = Excel.CurrentWorkbook(){[Name="MyTable"]}[Content],
    #"Unpivoted Other Columns" = Table.UnpivotOtherColumns(Source, {"Date"}, "Attribute", "Value")
in
    #"Unpivoted Other Columns"

which will lead to a more flexible and amenable dataset.

Regards