Compare two cell in Matlab.
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Hello, I have a question that,
if A=[ 'ddd', 'aaa']; B=['ddd']; I want to return an array that compare whether A's cell is equivalent to B's content. (sorry I know it is not well written)
So it should be [1,0] where first cell is equivalent but second is not.
However, my code has a problem:
for j=1:Num
temp(j)=(A{j}==B{1});
end
that it returns a comparison of vector, for example temp(1)=[1 1 1]; How can I do a comparison and just return 1 or 0, not an array.
How can I do it vectorization?
Thanks.
采纳的回答
Star Strider
2015-4-14
To cast your array as cells, use curly brackets ‘{}’ rather than square brackets ‘[]’.
With that change:
A={'ddd', 'aaa'};
B={'ddd'};
temp = strcmpi(A,B)
produces:
temp =
1 0
as desired.
8 个评论
C Zeng
2015-4-14
Star Strider
2015-4-14
That is because MATLAB interprets two strings in a matrix or vector as a concatenation.
So ['ddd', 'aaa'] will be intrepreted as ['dddaaa']. Using cells instead of matrices works the way you intend in your code.
C Zeng
2015-4-14
Star Strider
2015-4-14
My pleasure.
A cell array as provided by xlsread should work. That would likely be the the second output provided by xlsread. (The first output would be a numeric array.)
C Zeng
2015-4-14
Star Strider
2015-4-15
It depends on what you are doing. To compare strings in a cell array, use the ‘txt’ output. If you are interested in accessing the numeric output in ‘num’ corresponding to a particular ‘txt’ entry, you can add that as a second assignment in your for loop.
For example:
A = {'ddd'; 'aaa'};
B = {'ddd'};
num = [1 2; 3 4];
Num = size(A,1);
for j=1:Num
temp{j} = strcmpi(A{j},B{1});
if temp{j} ~= 0
data{j} = num(j,:);
end
end
temp{:} % Display Results
data{:} % Display Results
C Zeng
2015-4-15
Star Strider
2015-4-15
My pleasure!
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