How to input a matrix of unknown dimensions into a function?

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Leah
Leah 2013-4-10
function avg_vals = function_name(A)
A = %This is where I'm confused
avg_vals = mean(A,2);
end
I'm trying to create a function that will accept a matrix (A) that contains an unspecified number of rows and columns. I want it to then average the rows (rather than columns) and return those values as a column vector. It could be that I'm approaching this from the totally wrong angle, so any advice is welcome.

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Ahmed A. Selman
Ahmed A. Selman 2013-4-10
A is an input argument passed from function call function_name(A). SO, DELETE THIS LINE from the beginning, you do not need to input A a second time :)
function avg_vals = function_name(A)
A = % and this is where I am truly confused. Delete this line
avg_vals = mean(A,2);
end
When you want to work with this function, use:
ex1.:
A=1:10; % This is a 1-D vector
function_name(A)
ex2.
A=magic(4); % This is a 2-D matrix
function_name(A)
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James Tursa
James Tursa 2013-4-11
A matrix is entered using the square brackets. So try this instead:
function_name([1 2 3; 4 5 6; 7 8 9])
Everything inside the [...] is treated as a single matrix.

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