excelexcel-formulaworksheet-function
One-hot (dummy) encoding of categorical data in Excel
How to convert categorical data to one-hot encoded numeric format. Output format is depicted in the figure below:
Is it possible to automatically extract data classes and create columns for each class without having to create all columns (White, Red, Black, ...) manually in Excel?
Solution
you could do it with formulas
from your image above you could write in cell E2
=INDEX($B:$B,COLUMN(H:H)-COLUMN($E:$E)) 'DRAG FORMULA ACROSS AS NEEDED
in cell D3 use
=A3 'DRAG FORMULA DOWN AS NEEDED
and in cell E3 use
=IF($B3=E$2,1,0) 'DRAG FORMULA ACROSS AND DOWN AS NEEDED
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