Matlab - 將字符串作為代碼執行

使用eval()函數將字符串作為代碼執行；

配合num2str()函數和循環結構，可訪問按規律排列的文件。

 

%應用實例

%  http://www.cnblogs.com/Jian-thinker/p/7573396.html

 

>> help eval

eval Execute MATLAB expression in text.

% eval 將字符作為MATLAB代碼執行；

eval(EXPRESSION) evaluates the MATLAB code in the character vector

EXPRESSION.

 

[OUTPUT1,...,OUTPUTN] = eval(EXPRESSION) returns output from EXPRESSION

in the specified variables.

 %例

Example: Interactively request the name of a matrix to plot.

 

expression = input('Enter the name of a matrix: ','s');

if (exist(expression,'var'))

plot(eval(expression))

end

 

See also feval, evalin, assignin, evalc.

 

Reference page for eval

Other functions named eval