How to convert a char array field in a struct array to a string field in a vectorized fashion.
116 views (last 30 days)
Show older comments
I have a struct array in which one of the fields is a character array. I need to convert it to a string scalar for all stuctures in the array. I have been unable to find a way to do this in a vectorized manner.
Example:
myArray = [struct("code", 'CO128'), struct("code", 'TX457'];
This is a toy data structure -- the real thing has dozens of fields in each element and tens of thousands of elements in the array. I have no control over the array format up to this point.
What I am trying to accomplish is the same thing that is performed by the following loop:
for i = 1:size(myArray,2)
myArray(i).code = string(myArray(i).code);
end
I am restricted to the functionality of the basic MATLAB R2021a installation (no optional toolboxes).
0 Comments
Accepted Answer
Stephen23
on 29 Oct 2021
S = struct('code',{'CO128','TX457'});
S.code % checking
tmp = num2cell(string({S.code}));
[S.code] = tmp{:};
S.code % checking
More Answers (1)
Fangjun Jiang
on 29 Oct 2021
It can be done but not sure if it is more efficient than the simple for-loop
myArray=struct('code',{'a','ab','abc'})
myString=string({myArray.code})
myCell=mat2cell(myString,ones(1,size(myString,1)),ones(1,size(myString,2)))
myArray=struct('code',myCell)
0 Comments
See Also
Categories
Find more on Data Type Conversion in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!