I need to turn a 7x1 matrix full of numbers into a 7x1 matrix full of names but I don't know what I'm doing.

I need to convert a matrix filled with the number day of the year into a matrix that tells me what month each of those days falls in. I tried just doing

if days<31

month='January'

that obviously didn't work. next I tried using a for loop

for n=1:7

days(n)<31

month(n,1)='January'

but that also didn't work. Anyone know what to do?

Answer 1

[Star Strider]

This does not want to be vectorised, so you would have to loop through it for each day number, but it will probably do what you want:

daysvct = cumsum(eomday(2015, 1:12));
daynr = 123;
mnthnr = find(daysvct < daynr, 1, 'last');
mnthstr = datestr([2015 mnthnr 01 00 00 00], 'mmmm');
out = sprintf('Day #%d is in %s', daynr, mnthstr)

out =
Day #123 is in April

Answer 2

[Walter Roberson]

Hint:

months = {'January', 'February', 'March'};
months([3 1 2 2 3 1])