Split a matrix into a sum of other matrices

2 views (last 30 days)
radu
radu on 3 Apr 2013
Hello,
I Have a big matrix (100x100) comprised of both numerical and symbolic variables. Is there any way I can split the matrix above into a sum of matrices of the same size?
example: A=[2*x1, 5*x2; 4*x3, x4]
A= x1*[2, 0; 0 0] + x2*[0, 5; 0 0] + x3*[0, 0; 4 0] + x4*[0, 0; 0 1]
I would hate to do this by hand, so any help to simplify my problem would be greatly appreciated.
Thank You

Answers (2)

Matt Kindig
Matt Kindig on 3 Apr 2013
How is your matrix currently defined? Are you really combining both numeric elements (e.g. doubles) and symbolic elements (created by sym() function) together?

radu
radu on 3 Apr 2013
short answer: Yes, I have both numerical values(double) and symbols (created with symbolic math toolbox).
At first the matrix was comprised just of symbols (created with syms() ) but in order to simplify the matrix I added values for the constant ones. The rest are time dependent.
The idea is that i do not know the exact values of the symbolic variables, but I know their boundaries.

Categories

Find more on Symbolic Math Toolbox in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!