Matlab - 将字符串作为代码执行

Posted 2020-10-08 Super_Jian

使用eval()函数将字符串作为代码执行；

配合num2str()函数和循环结构，可访问按规律排列的文件。

 

>> help eval

eval Execute MATLAB expression in text.

% eval 将字符作为MATLAB代码执行；

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