Hello! I want to generate some dynamic variables using for loop. can anybody help?

I want to generate a dynamic variable Aij, where I could assign this variable A different suffix i and j using for loop. so i could get variables like :

A11(i=1,j=1)

A11 , A12 , A13 , A14 , A15....................................A1j (where i=1, j=1,2,3,4...........n)

A21 ,A22 , A23 , A24 , A25....................................A2j (where i=2, j=1,2,3,4...........n)

A31 , A32 , A33 , A34 , A35....................................A3j (where i=3, j=1,2,3,4...........n)

...

...

...

An1 , An2 , An3 , An4 , An5...................................Ann (where i=n, j=1,2,3,4...........n)

why i am interested in generating such variables? because i want to assign these variables values which depends on i and j. So the variable itself represnts its value. in other words i could just tell the values of i and j by just looking at the variable itself.

for example:

Aij=i+j

A23=2+3=5

so by just looking at A23 i could guess its value.

[Stephen23]

Accessing dynamic variable names is one way the beginners force themselves into writing slow, complex, obfuscated, buggy code that is hard to debug. Read this to know why:

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

Indexing is neat, simple, and very efficient, unlike what you are trying to do. You should use indexing:

https://www.mathworks.com/help/matlab/math/array-indexing.html

https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html

Answer 1

[Adam Danz]

Don't use dynamic variable names. It looks like you would benefit from storing your data in a [n-by-m] cell array like this:

n = 5; 
m = 10; 
data = cell(n,m); 
for i = 1:n
    for j = 1:m
        data{i,j} = myfunc(x,y); 
    end
end

Instead of having a variable named "A35" you can access the cell A{3,5}.

If all of your data are numeric scalars, you could use a matrix instead of a cell array.

data = nan(n,m); 
for i = 1:n
    for j = 1:m
        data(i,j) = myfunc(x,y); 
    end
end

A(3,5) %instead of A{3,5}