Using the text in a char matrix as the name of a matrix

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Ehsan Khorsandnejad
评论： Walter Roberson 2018-3-9
Imagine I have a char matrix as follows:
val =
AAAAA
BBBBB
CCCCC
How can I use these texts as the names of some matrices?
For example I want my first matrix to be:
AAAAA = [3 4 5];
  1 个评论
Stephen23
Stephen23 2018-3-9
Avoid doing this. Dynamically accessing variable names is how beginners force themselves into writing slow, complex, buggy code that is hard to debug. For more information see:
https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
Note that indexing is neat, simple, very easy to debug, and very efficient. You should consider using indexing.

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回答（3 个）

Vishwanath Bailore Acharya
You can use 'genvarname' for your purpose.
For example, if you have a character array 'val' as,
val = 'ABC';
then you can use 'genvarname' to construct a variable name from the strings as,
a = genvarname(val(1));
then you can use variable 'a' as a variable to any data by using 'eval' function as,
eval([a ' = [1,2,3]']);
Hope this helps.
Walter Roberson
Walter Roberson 2018-3-9
Ehsan Khorsandnejad
编辑：Ehsan Khorsandnejad 2018-3-9
Thanks, but I think you got my question wrong. I am not going to make dynamic name vairables. I am going to use some available names or strings as the name of a new variable.
For example I have some str like: 'MyNameIsJack'
I want to use the first 6 letters as the name of a new variable so I finally have:
MyName = 3;
How can I do this automatically via a code?
  1 个评论
Walter Roberson
Walter Roberson 2018-3-9
Creating a variable name from data at run time is making a dynamic variable name. You compute the variable name, such as
varname = str(1:6);
and then you want to use the content of varname as the name of the variable to write to. "Dynamic" in "dynamic variable name" is the opposite of "static" as in "static variable name", with static variable names being the ones that are hard-coded and unchangeable, and dynamic variable names changing depending on the circumstances.

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