Please help me to solve the issue for the following code

I have asked this question already but I couldnt get the answers what i actually need.

A=[0.01 0.02 0.03 0 0 0 0.02;
0.02 0.03 0.04 0 0 0 0.03;
0.03 0.02 0.02 0 0 0 0.04]
s=sum(sum(A))

if i run the code it gives the value 0.3100.

But how to replace the numbers such that the sum of A should be 0.35. could anyone help me on this

[Rik]

If you don't get an answer to work, you should comment there, NOT open a new question.

Answer 1

[Rik]

You have a working answer here, you just didn't run the code correctly.

A=[0.01 0.02 0.03 0 0 0 0.02;
0.02 0.03 0.04 0 0 0 0.03;
0.03 0.02 0.02 0 0 0 0.04];
A = 0.35*A/sum(A(:))
s=sum(A(:))

[Prabha Kumaresan]

the command line A = 0.35*A/sum(A(:)) should not be included. On omitting the line s=0.31.

Could you please tell me how to change or replace the numbers in A such that the value of s=0.35.

[Walter Roberson]

Why should that line not be included? If it gets you the answer you want, then why not use it?

If you want to generate A so that it already has the right sum, then use Roger's randfixedsum() from the File Exchange.

Answer 2

[Prabha Kumaresan]

if i use the command line it gives the result what i need but the addition of the numbers of the matrix was not changed.

[Walter Roberson]

I do not understand that remark.

Perhaps you need

 new_A = 0.35*A./sum(A(:));
 additions_to_A = new_A - A;

and now the additions of numbers to A that you need to reach the desired total is in the matrix additions_to_A, and you can get the desired matrix by using

desired_matrix = A + additions_to_A;

[Prabha Kumaresan]

Thanks a lot.It works.