How to create a pivot table

2020 6 29
2 个回答
回答已采纳
更新时间：2023 3 17
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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.

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 采纳的回答

Maadhav Akula
Maadhav Akula 2020-7-2

0 个投票

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!

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alpedhuez
alpedhuez 2020-7-2
The orginal table has dd/mm/yyyy not month. This is the point.
Maadhav Akula
Maadhav Akula 2020-7-2
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
alpedhuez 2020-7-3
编辑：alpedhuez 2020-7-3
date=datetime(T2.yyyy_mm,'InputFormat','yyyy-MM');

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更多回答（1 个）

Lola Davidson
Lola Davidson 2023-3-17

1 个投票

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");

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