MATLAB: Generating days based on leap years

daysgeneratingleap years

Hi,
I wanted to generate a matrix like below. Basically, years in the first column, start days, end days for the year by conditional check of first column. Fourth row is basically MOD function to check if a leap year or not.
1960  1  366  366
1961  367  731  365
1962  732  1096  365
1963  1097  1461  365
1964  1462  1827  366
1965  1828  2192  365
1966  2193  2557  365
 .     .       .       .
2014
Does anybody have an idea?
Thanks in advance.

Best Answer

There may be more efficient approaches, but this works:
yr = [1960:2014]';
lpyr = (mod(yr,4)==0);
dpy = ones(size(yr))*365+lpyr;
csd = cumsum(dpy);
M = [yr [1; csd(1:end-1)+1]  csd dpy];
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