Clear Filters
Clear Filters

Symbolic matrix with symbolic size

13 views (last 30 days)
I am trying to define a symbolic matrix with symbolic indices
Normally, I know that a symbolic matrix A which has 2 rows and 4 columns is defined as :
A = sym('A', [2 4])
But I want to define it with m rows and n columns, when I use the following code, I have an error message: Error using sym (line 253) Second argument must be assumption or size vector:
syms m n
assume(m,'integer')
assumeAlso(m>=0)
assumeAlso(m<=M-1)
assume(n,'integer')
assumeAlso(n>=1)
assumeAlso(n<=2^(k-1))
A = sym('A', [m n])
So, how can I accomplish this?
Thank you in advance.

Accepted Answer

Raunak Gupta
Raunak Gupta on 28 Dec 2020
Hi,
As mentioned in this question , Matrices with unknown size is not supported in MATLAB and thus the correct error message is displayed. You can try the workaround given in the answer by defining a large matrix and then cropping it based on the actual values of ‘m’ and ‘n’.

More Answers (0)

Community Treasure Hunt

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

Start Hunting!