How to change a variable name without changing the value itself?
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I've got some variables like these: OutArray, OutArray2 and so on...
I need to refresh the base name OutArray adding the "1", "2", "3"... taking advantage of the loop iterator, how may I do it?
I have MATLAB R2023A
采纳的回答
Image Analyst
2023-6-10
编辑：Image Analyst
2023-6-10
Just do them one at a time, reassiging existing variables to variables with your new, preferred names. Then you can clear the old-named variables from memory with clear if you want.
newname1 = OutArray;
newName2 = OutArray2;
newName3 = OutArray3;
newName4 = OutArray4;
clear('OutArray', 'OutArray2', 'OutArray3', 'OutArray4');
Surely you don't have more than a handful of those variables. If you do (big mistake), then see this
for reasons why not to do that.
If you have tons of variable names because they are columns of a big table you read in from a file, then consider converting them all to a 2-D array with the table2array function.
更多回答（4 个）
Star Strider
2023-6-10
2 个投票
chicken vector
2023-6-10
1 个投票
This is in general not recommend because is prone tu bugs and affects code readibility.
The easy way
variables = ["OutArray" "OutArray2" "OutArray3"];
for kk = 1:numel(variables)
eval(variables(kk) + string(kk) + " = eval(variables(kk))");
clear(variables(kk))
end
A more refined way
variables = string(who); % retrieve the name of the variables from workspace
% without having to write them by hand
for kk = 1:numel(variables)
eval(variables(kk) + string(kk) + " = eval(variables(kk))");
clear(variables(kk))
end
1 个评论
John D'Errico
2023-6-10
编辑：John D'Errico
2023-6-10
Neither of those ways is at all refined. And neither of them are a remotely good idea. They will lead to crappy, buggy, and SLOW code, when a simple array was all that was ever needed. Is there even a remotely good reason to recommend this? NO.
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