How to add multiple 0s in front of number with numstr?

I have been using " num2str(i,'%04d') " which is giving me strings of "0100," "0200," etc. I can't seem to figure out a version of the code that will give me "0001" "0002".

[DGM]

That should be what it does. You might want to check what your inputs are.

for i = [1 2 100 200]
    num2str(i,'%04d')
end

ans = '0001'

ans = '0002'

ans = '0100'

ans = '0200'

[Kelsey Ward]

yep, thanks, just had an error farther back that was setting it to 100 instead of 1

[Jan]

By the way, num2str calls sprintf internally.You can call this directly also:

sprintf('%04d', i)