How Can I use a string value as a parameter name?
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Hello
How Can I use a string value as a parameter name?
I have a function that return a string value, I want to use this function in another function and use this string value as parameter name that is a Image.
Could You help me?
thanks
4 个评论
Chandrasekhar
2015-2-19
have you tried using 'eval'
Michael Haderlein
2015-2-19
I don't quite get the question. When you do something like
[filename,pathname]=uigetfile;
img=imread(fullfile(pathname,filename));
then you already do exactly what you want. You have a function (uigetfile) which returns a string value (or, in this case, two values) and you use it as parameter.
bkshn
2015-2-19
Michael Haderlein
2015-2-19
I don't know your code and, as mentioned before, I didn't really understand the question. But in 99 % of the cases using eval is not the best idea. Besides issues such as slow execution, it makes debugging very difficult. There are cases when eval is the best (or the only) way, but that's limited to the 1 % remaining in my statistics. In all other cases, I'd not recommend it.
回答（2 个）
You can allocate that string to a variable, and use that variable in the next function:
str = firstFunction(...);
secondFunction(str)
This will call the second function with whatever string the first function returned.
If you are talking about using a string to dynamically name a variable, then don't do this and use a cell array or structure instead.
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2015-2-19
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