for loop over matrix expression

Hi I have two entries in a block of code a=[1 2;3 4] and b=[2 4; 6 7] Now I want to execute a for loop so that the first iteration value is a and the second iteration value is b. What happening now if I write the following piece is that value of w is first column of a. No I want entire a to be w. Is there anyway I can do that?

for w=[a b]
some code
end

Answer 1

[Walter Roberson]

a=[1 2;3 4]; b=[2 4; 6 7];
for wcell = {a, b};
  w = wcell{1};
  ...
end

Answer 2

[Image Analyst]

Then don't use a for loop. Use a function

outputa = ProcessW(a);
outputb = ProcessW(b);

function should be defined like this:

function output = ProcessW(w)
   output = some manipulations based on 2-D w matrix.