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Asked by Christian on 19 Jan 2013

Hi,

I am pretty new to MATLAB, so this might be a stupid question. However, I am encountering a problem when i try to convert a matrix of 1x1 symbols into a matrix with doubles, where the symbols are converted to doubles each. Each element in the matrix is a function of a lot of symbols, which I need somehow to convert into numbers. I have something like this:

syms x y; f = function of x and y x = 2; y = 3; f.

However, doing this gives me f as a function of the syms x and y, and not the numbers 2 and 3... Hope you can somehow help me, as Im kinda stuck in my coding.

Regards, Christian

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Answer by Walter Roberson on 19 Jan 2013

Accepted answer

double(subs(f))

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Walter Roberson on 19 Jan 2013

Because subs() would result in symbolic numbers after substitution. double() finishes the conversion to numeric.

Answer by Azzi Abdelmalek on 19 Jan 2013

Edited by Azzi Abdelmalek on 19 Jan 2013

Use

suyms x f=cos(x); x=10; eval(f)

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