Error After Running Program
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Hello,
Whenever I'm trying to run a following program on MATLAB6.5, I'm getting the following error
_*??? Undefined function or variable 'step'.
Error in ==> D:\Simulation Lab Softwares\Softwares\abc.m On line 4 ==> step (num,den)*_
-----------PROGRAM----------------
%unit step response
num= [2 25]
den= [1 4 25]
step (num,den)
1 个评论
Azzi Abdelmalek
2013-3-22
Have you a Control System toolbox?
回答（2 个）
Image Analyst
2013-3-22
0 个投票
You do not have an array called step, or a function defined called step, either in that m-file, or any other step.m file on your search path.
Jason Ross
2013-3-22
0 个投票
There is a "step" function that's part of the Control System Toolbox for that release. If that toolbox isn't installed, you would get this error.
It's also possible that you are missing a file that your program needed to run where someone had defined "step".
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