How do I preallocate symbolic matrix?

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Shawn Miller
Shawn Miller on 28 Feb 2016
Commented: Hernán Moreno on 7 Jul 2021
I got the warning of preallocation when I tried to change the size of my 1*n symbolic array (elements are symbolic expressions) every time I added a new element. So I wonder how do I allocate symbolic array like zeros(n) in numeric array? Does zeros(m,n,'sym') or sym(zeros(m,n)) work or whatever really works and would increase speed?

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Accepted Answer

Walter Roberson
Walter Roberson on 28 Feb 2016
sym(zeros(m,n)) is good and would increase your speed.

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