How to add a number to an element of a vector which meets a certain criteria?
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Pree
am 3 Sep. 2015
Kommentiert: Star Strider
am 3 Sep. 2015
I have a vector which has sleep times. Its length is 915. But just for an example lets say,
t=[21.33; 22.45; 23.11; 23.67; 0.13; 1.56; 2.33];
The last 3 elements are times after midnight. So I want to add 24 to times after midnight. How can I do it? I tried using if statement.
if t<5
t=t+24
end
but this doesn't work.
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Star Strider
am 3 Sep. 2015
This works:
t=[21.33; 22.45; 23.11; 23.67; 0.13; 1.56; 2.33];
t(t<5) = t(t<5)+24
t =
21.33
22.45
23.11
23.67
24.13
25.56
26.33
This approach uses ‘logical indexing’ to specifically address only the elements you want. (Using decimal notation for the time makes this much easier!)
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