minmum value for a vector [closed]

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Closed 3 years ago.

If I have the following vector

c(5,3,2,6,7,8,1)

I want to get minimum vector

c(5,3,2,2,2,2,1)

Any idea how to achieve this?

回答1:

What you seem to want is cumulative minimum (cummin);

> a = c(5,3,2,6,7,8,1)

> a
[1] 5 3 2 6 7 8 1

> cummin(a)
[1] 5 3 2 2 2 2 1