Finding min values in structure array

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BlkHoleSun
BlkHoleSun 2017-10-9
回答： BlkHoleSun 2017-10-21
Below is my current structure array, and I would like to be able to search the structure and find the minimum age.
field1='relation';
value1={'spouse', 'son', 'son', 'daughter', 'daughter'};
field2='name';
value2={'Rebekah', 'Caleb', 'Isaac', 'Faith', 'Annabel'};
field3='state';
value3={'OH', 'VA', 'VA', 'VA', 'VA'};
field4='age';
value4={'29','7','6','4','2'};
s = struct(field1,value1,field2,value2,field3,value3,field4,value4);
  2 个评论
per isakson
per isakson 2017-10-10
编辑：per isakson 2017-10-10
Are the values of age a mistake? They are character strings,
value4={'29','7','6','4','2'};
I replaced the assignment by
value4={29,7,6,4,2};
Then finding min is simple
>> [s.age]
ans =
29 7 6 4 2
>> [val,ix] = min([s.age])
val =
2
ix =
5
>>
BlkHoleSun
BlkHoleSun 2017-10-10
yes, it was a mistake. thank you. [val,ix] = min([s.age]); s(ix) now I get all the info from the min age. Thanks again!

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采纳的回答

BlkHoleSun
BlkHoleSun 2017-10-21
[s.age] ans = 29 7 6 4 2 >> [val,ix] = min([s.age]) val = 2 ix = 5

更多回答（2 个）

Nicolas Schmit
Nicolas Schmit 2017-10-10
First, convert the age data from string to numeric, and concatenate it into an array.
ageArray = arrayfun(@(x) str2double(x.age), s);
Now, find the index of the minimum age.
[~, iAgeMin] = min(ageArray);
Jan
Jan 2017-10-10
This struct is impractical for searching, as well as it is to search for a minimum in values stored as strings. But it works:
num = str2double({s.age});
minValue = min(num);

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