How to delete duplicates and replace values in an array?

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Colin TaylorMays
Colin TaylorMays 2021 年 8 月 20 日
コメント済み: Simon Chan 2021 年 8 月 20 日
Hey, I'm a little stumped on my personal project. I'm trying to have MatLab check a list of ingredients, delete duplicates, and rewrite the remaining ingredient to show how many times its been mentioned. Here's an example:
[("White Onion"),("Potato"),("White Onion"),("Fruit")] -> [("2x White Onion"),("Potato"),("Fruit")]
I know unique() is a command I could use, but how would I rewrite that individual value?

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Simon Chan
Simon Chan 2021 年 8 月 20 日
編集済み: Simon Chan 2021 年 8 月 20 日
Create a table and use function groupsummary
Item=["White Onion";"Potato";"White Onion";"Fruit"];
T=table(Item,'VariableNames',{'Ingredients'});
G = groupsummary(T,"Ingredients","sum")
Result:
G =
3×2 table
Ingredients GroupCount
_____________ __________
"Fruit" 1
"Potato" 1
"White Onion" 2
  3 件のコメント
Simon Chan
Simon Chan 2021 年 8 月 20 日
Thanks Cris, forgot it is string data.
Use function writetable to put it in a text file
writetable(G,'result.txt')

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