could any one please advise me on what is wrong with this code ?

function classGrades = convertGrades NamesAndGrades (1:5,:)

L = 20; % size of M, NamesAndGrades

c = 11; % last column of the submatrix (of course c < L)

% create the submatrix (NamesAndGrades)

M = rand(L);

% extract the desired submatrix

grades = M(:,2:c);

end

Answer 1

[Orion]

Hi,

so, many problems :

first line : what is the name of your function ? convertGrades, NamesAndGrades ? and in this line (1:5,:) has nothing to do here.

last line : grades = M(:,2:c); the output of your function is classGrades which is not defined in your code, i guess you need classGrades = M(:,2:c); ?

so depends on what you want to do, but here is function which works :

function classGrades = convertGrades 
L = 20; 
c = 11; 
M = rand(L);
classGrades = M(:,2:c);
end

[philip]

thanks very much for your support !, grate help.