Error After Running Program

1 view (last 30 days)
Muhammad
Muhammad on 22 Mar 2013
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 Comment
Azzi Abdelmalek
Azzi Abdelmalek on 22 Mar 2013
Have you a Control System toolbox?

Sign in to comment.

Answers (2)

Image Analyst
Image Analyst on 22 Mar 2013
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
Jason Ross on 22 Mar 2013
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".

Categories

Find more on Function Creation in Help Center and File Exchange

Tags

Community Treasure Hunt

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

Start Hunting!

Translated by