grouping like items in column

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Qiana Curcuru
Qiana Curcuru 2021-7-12
编辑： Matt J 2021-7-19
I have a cell array that looks like:
a={apples} {1}
{orange} {2}
{apples} {3}
{Pear} {4}
{apples} {5}
I want to get like items together in their own matrix like:
a1= {apples} {1}
{apples} {3}
{apples} {5}
a2= {orange} {2}
a3= {pear} {4}
Thank you!

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采纳的回答

Matt J
Matt J 2021-7-12
编辑：Matt J 2021-7-12
One way:
a=sortrows(a,1)
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Qiana Curcuru
Qiana Curcuru 2021-7-19
ah okay, but what if i dont know what the categories are since i am writing them with a for loop. is there a way to refernce them using indices?
Matt J
Matt J 2021-7-19
编辑：Matt J 2021-7-19
You should use dynamic field referencing.
fields=fieldnames(Sa);
for i=1:numel(fields)
Sa.(fields{i})
end

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