清空筛选条件
清空筛选条件

Is it possible to transform a string to a variable code name in MATLAB?

69 次查看（过去 30 天）
Brando Miranda
Brando Miranda 2016-3-21
评论： Stephen23 2019-4-30
This might be a very bizarre question (and probably I might be advised against doing such a weird thing) but if I have a string as in `v_str ='var_name'` and I want to transform the contents of that code into the actual code, is that possible in MATLAB? As in:
v_str = 'var_name'
x = make_string_to_code(v_str)
translates to the functioning code:
x = var_name
which simply transforms the string to actual code.
The only way I thought of doing this is by writing a file with that code and then on the next line executing that fine, but I wanted to avoid writing files every time that I want to do this
  3 个评论
显示 1更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Adam
Adam 2016-3-21
编辑：Adam 2016-3-21
You are correct that this is something you will be strongly advised against even trying to do. Someone will probably post a relevant set of links to places that tell you why not, but as to an alternative solution, use a struct and a dynamic string to access its fields if you want to do something like this. e.g.
myStruct.var_name = 6;
v_str = 'var_name';
x = myStruct.( v_str );
would be equivalent to just
x = 6;
This can be especially useful if you are loading data from a mat file since the 'load' function allows you to load all the variables into the workspace as fields of a struct rather than just depositing them all into the workspace.
Renato Agurto
Renato Agurto 2016-3-21
编辑：Renato Agurto 2016-3-22
x = eval(v_str);
It is normal to advice against it, but normally when the left side of the equation is a string

类别

在 Help Center 和 File Exchange 中查找有关 Whos 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by