How can I make the output of a function always a column vector, regardless of if the input is a column or row vector?

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Michael Perry
Michael Perry 2018-2-7
回答： Robert 2022-3-21
I'm having trouble with a problem where I need the output to be a column vector, but inputs are sometimes provided as row vectors and other times as column vectors (so sometimes transposing it helps, but sometimes it flips a column vector to a row vector, making it wrong.) Thanks!
  1 个评论
per isakson
per isakson 2018-2-7
编辑：per isakson 2018-2-7
>> row = 1:12; % test data
>> row
row =
1 2 3 4 5 6 7 8 9 10 11 12
>> reshape( row, [],1 )
ans =
1
2
3
4
5
6
7
8
9
10
11
12
>>
or
>> row(:)
ans =
1
2
3
4
5
6
7
8
9
10
11
12
I think reshape is more readable.
Test this with a column vector

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采纳的回答

possibility
possibility 2018-2-7
%Check if the output is a column vector
if size(output,2)>1
output=output(:)
end
Hope the problem is understood correctly.
Best

更多回答（1 个）

Robert
Robert 2022-3-21
You can use isrow for this:
if isrow(output)
output = output';
end

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