How to create a pivot table

I have a table

date person spendings

----------------------------------------

1/1/2020 John $100

1/1/2020 Mike $50

1/2/2020 John $75

1/3/2020 Mike $40

I want to create a pivot table

John Spendings Mike Spendings

----------------------------------------------------------------------------------

January 2020

February 2020

March 2020

Please advise.

Answer 1

[Maadhav Akula]

I think the unstack function might help you out. I have written a small example using your data:

month = categorical({'Jan';'Jan';'Feb';'March'});
person = categorical({'John';'Mike';'John';'Mike'});
spendings = [100;50;75;40];
T = table(month,person,spendings)
u = unstack(T,'spendings','person')

I think you can customise it according to your needs.

Hope this helps!

[alpedhuez]

The orginal table has dd/mm/yyyy not month. This is the point.

[Maadhav Akula]

You can utilize the month and datetime functions to tweak them to your required format.

a = month(datetime('1/1/2020','InputFormat','dd/MM/yyyy'),'shortname')

The above line returns the Month in 'Mmm' format, for instance January as 'Jan'. You can tweak some of these properties to obtain the required values which best suits your requirements.

[alpedhuez]

date=datetime(T2.yyyy_mm,'InputFormat','yyyy-MM');

Answer 2

[Lola Davidson]

As of R2023a, you can use the "pivot" function: https://www.mathworks.com/help/matlab/ref/pivot.html

Tout = pivot(Tin, Rows="date", RowsBinMethod="month", Columns="person", DataVariable="spendings");