how to seek and replace characters on cell
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Now I have a mat A as below:
A=[1 1 1;1 2 2;2 1 2;2 2 1]
A =
1 1 1
1 2 2
2 1 2
2 2 1
Now want to replace '1' and '2' with 'a' and 'b' seperately; so I use function 'mat2cell()' to set mat A as cell B; but I don't know how shall I do the above replacement.
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Accepted Answer
Geoff Hayes
on 27 Nov 2015
Rather than converting the matrix to a cell array using mat2cell, consider applying a function to each element of A using arrayfun. Define a mapping for 1 and 2 and apply that mapping to each element. For example,
map = {'a', 'b'};
We will treat the elements of A as indices into the map as
B = arrayfun(@(x)map(x),A);
where
B =
'a' 'a' 'a'
'a' 'b' 'b'
'b' 'a' 'b'
'b' 'b' 'a'
More Answers (1)
Stephen23
on 27 Nov 2015
There is no need to use complicated arrayfun, simply use A as an index:
>> A = [1 1 1;1 2 2;2 1 2;2 2 1];
>> map = {'a','b'};
>> B = map(A)
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