Converting sym to string without 'matrix....' before

Hi,

I need some help to convert a symbolic array to string.

I tried with:

syms a b c

Array = [a b c];

string = char(Array);

but it returns

matrix([[a b c]]);

Is there a way to take only the string inside ? I need set it to take '[a b c]' as string.

Thanks

Answer 1

[Wayne King]

Can you tell us the use case here, you just want to display it as a string?

One thing you can do is

   syms a b c
   Array = [a b c];
   array_string = char(Array);
   array_string([1:8, end-1:end]) = [];

[Marco]

'Cause I have to put a sym array into a Costant Simulink block and it wants 'Value' as string

[Walter Roberson]

I wonder what mat2str() would return for the symbolic case?

[Jong Hoon Choi]

Tried mat2str(), but gave me this error: Error using mat2str (line 55) Input matrix must be numeric.

[genevois pierre]

if I want to execute a program in which at least one line contains matrix, an error comes ...

Is there no more convenient conversion from a symbolic (which is coming from solve) to a character vector than that using char ?

[Walter Roberson]

No, there is no more convenient way.

Caution: char() of a symbolic expression gives a result which is not exactly a MATLAB expression, and which is not exactly a MuPAD expression either. You should only use char() of a symbolic expression for display purposes.

If you need to generate MATLAB code from a symbolic expression, use matlabFunction(), possibly followed by func2str()

Answer 2

[Walter Roberson]

In the case of symbolic row vectors:

['[', strjoin(arrayfun(@char, Array, 'uniform', 0),', '), ']']