MATLAB R2018a hangs on busy when performing certain tasks

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Francesco Brozzu
Francesco Brozzu 2018-5-3
评论： Francesco Brozzu 2018-5-3
I'm trying to run a script that computes a function at a specific time instant which is given by the value inside a time vector in this way:
w= @(t) heaviside(t); Tmax=1e-1; dt=1e-3; time = 0:dt:Tmax; w(time(k))
However once the script gets to the w(time(k)) part MATLAB gets stuck on busy, the interface still responds but I am unable to perform any command.
The same issue happens when trying to restore a MATLAB workspace.
I already tried to reinstall MATLAB from scratch but I still get the same issue.
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Francesco Brozzu
Francesco Brozzu 2018-5-3
k is an integer, I'm doing this in a for loop. I left MATLAB on the busy state for 10 minutes and it got unstuck with this error when computing heaviside(0):
Function call 'heaviside(0)' yields a symbolic object. Use 'sympref("HeavisideAtOrigin", v)' with some
numeric value v to change 'heaviside(0)' to v.
Also yes I just updated Windows 10 to the spring update.

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Walter Roberson
Walter Roberson 2018-5-3
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Francesco Brozzu
Francesco Brozzu 2018-5-3
That was the issue I was experiencing, installing Update 1 fixed symbolic math toolbox. The problem with importing the workspace was due to the fact that the workspace had symbolic variables.
Thank you!

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