printmat function for unknown number of rows

Example:

      M= rand(5)
      printmat(M, 'My Matrix', 'ROW1 ROW2 ROW3 ROW4 ROW5', 'FOO BAR BAZ BUZZ FUZZ' )

but suppose I don't know how many rows I will have (it depends on the user input) what can I do in this situation?

Thank's.

Answer 1

[Cedric]

You can build your headers using SPRINTF; for example:

 >> M = rand(6) ;
 >> vheader = sprintf('ROW%d ', 1:size(M,1))
 vheader =
 ROW1 ROW2 ROW3 ROW4 ROW5 ROW6

(you might want to STRTRIM the output to get rid of the last white space)

[googo]

Hey, thank's but:

where should I write it?

here is my code :

function hw = homework(a,b)
U =unifrnd(a,b);   % Generates a number from the uniform distribution
n =input('Enter a requested sample size:');
r = input('Enter a requested number of repeats:');
stats = zeros(r,2);
M = exprnd(1/U,r,n); % Generates a r(x)n matrix of exponential
for i=1:r
    stats(i,1) = 1/mean(M(i,1:n));  % caculates the MLE for a row sample
    stats(i,2) = (sqrt(n) * (stats(i,1) - U))/U;
end
display(U);
hw = stats;

end

the matrix is rX2 and I want the titles to be:
    #sample MLE T 
    1
    2
    3
    4

    r

can you explain a little bit more? thank's!

[Cedric]

Well, in your example, you have the following call:

 printmat(M, 'My Matrix', 'ROW1 ROW2 ROW3 ROW4 ROW5', 'FOO BAR BAZ BUZZ FUZZ')

where M is a numeric array, and the next 3 arguments are strings. I assume that 'ROW1 ROW2 ROW3 ROW4 ROW5' is the string defining the vertical header in the output, and you could actually have it saved in a variable that you pass to this function printmat of yours:

 vheader = 'ROW1 ROW2 ROW3 ROW4 ROW5' ;
 printmat(M, 'My Matrix', vheader, 'FOO BAR BAZ BUZZ FUZZ')

and more generally:

 label   = 'My Matrix'
 vheader = 'ROW1 ROW2 ROW3 ROW4 ROW5' ;
 hheader = 'FOO BAR BAZ BUZZ FUZZ'
 printmat(M, label, vheader, hheader) ;

Now the example that I gave shows you how to build vheader if you don't know the number of rows of M in advance:

 label   = 'My Matrix'
 vheader = sprintf('ROW%d ', 1:size(M,1)) ;
 hheader = 'FOO BAR BAZ BUZZ FUZZ'
 printmat(M, label, vheader, hheader) ;

Now it's up to you to adapt this to your homework ;-)