Assign number to symbol in cell array

Hello,

I want to assign a number (ex. 2) to a symbolic variable (x) in a cell array (A) using a cell array index operator {}.

syms x y ... ; A{1}=x; A{2}=y; ...

For example, if I write A{1}=2, then A{1} changes to 2; x does not become 2, definitely. Is there any way?

Answer 1

[Abhiram Bhanuprakash]

The behaviour which you have pointed out is expected, because you are setting the value of the cell array element A{1} to 2, but not setting a value to the symbol. Assigning a 'double' value to a 'sym' variable would just convert the 'sym' variable to a 'double'.

You can use the function SUBS to substitute a symbolic variable with a 'double' in MATLAB.

Here is some sample code to do the same:

>> syms x,y;
>> A{1} = x; A{2} = y;
>> subs(A{1}+A{2},A{1},5);

You would get the result to be

y + 5