How to add a string to all member in matrix?

Example: I have:

a = [1 2 3; 4 5 6; 7 8 9]

I want have:

b = [s1 s2 s3; s4 s5 s6; s7 s8 s9]

[James Tursa]

What is b supposed to be? A symbolic matrix? A cell array of strings? A string expression that you are going to use eval( ) with to get a matrix b using pre-existing variables s1, s2, etc? Or what?

[anh ht]

b is a symbolic matrix or anything matrix. I want display matrix:

s1 s2 s3

s4 s5 s6

s7 s8 s9

[Stephen23]

@anh ht: What is an "anything matrix"? Perhaps the terms are being used a little bit differently: instead of telling us what kind of matrix you want, tell us actually what you want to achieve with this. What are you actually trying to do?

[anh ht]

@Stephen Cobeldick: Sorry. My English is bad. after calculation, I want display output matrix:

s1 s2 s3

s4 s5 s6

s7 s8 s9

Answer 1

[the cyclist]

I have the same questions that James Tursa asked, but here is my best guess as to what you want:

b = cellfun(@(x)['s',num2str(x)],num2cell(a),'UniformOutput',false)

[anh ht]

Thanks. But I want:

s1 s2 s3

s4 s5 s6

s7 s8 s9

not:

's1' 's2' 's3'

's4' 's5' 's6'

's7' 's8' 's9'

Answer 2

[James Tursa]

For a symbolic matrix output, e.g.,

n = numel(a);
s = '[';
for k=1:n
    e = ['s' num2str(a(k))];
    eval(['syms ' e]);
    s = [s ' ' e];
end
s = [s ']'];
b = reshape(eval(s),size(a));

[anh ht]

tks. I want to accept 2 answer. but I can't :(