How to make this matrix

I want Matlab to create a 12x31 matrix that looks like the result of the following code.

 M = [1:31; 32:59,0 0 0; 60:90; 91:120,0; 121:151; 152:181,0; 182:212; 213:243; 244:273,0; 274:304; 305:334,0; 335:365]

However, I want Matlab to calculate the element values and place the zeros accordingly, rather than me calculating the ranges and placing the zeros. Is this possible? Basically, I want a more simple code to produce this same result. Thanks

[David Goodmanson]

what about leap year?

Answer 1

[Star Strider]

This is as efficient as I can get get the code to calculate the matrix:

v = eomday(2000, (1:12)');                                          % Choose A Leap Year
Ms = zeros(12,31);                                                  % Preallocate Output Matrix
Mb = bsxfun(@plus, cumsum(ones(12,31),2), cumsum([0; v(1:11)]));    % Calculate Cumulative Day Matrix
for k1 = 1:size(Ms,1)
    Ms(k1, 1:v(k1)) = Mb(k1, 1:v(k1));                              % Assign Columns By Month (Row)
end

The loop is necessary because I could not find any other way to do the column addressing for each row.