[R] Help with loop

[arun]

HI,

If it is possible to remove those NA values:
 dat$time <- as.Date(dat$time,format="%Y-%m-%d")
newdat<-dat[complete.cases(dat),]

 change<-cumsum(c(FALSE,abs(diff(newdat$Salt))>0.05))  #Rui's solution
 split(newdat,change)
A.K.



----- Original Message -----
From: Hefri <helenefrigstad at hotmail.com>
To: r-help at r-project.org
Cc: 
Sent: Thursday, November 22, 2012 6:43 AM
Subject: Re: [R] Help with loop

Hi again,

I was thinking that the interval would stop when there was a NA, ignore
subsequent NAs and only start a new interval when there was a new value. So
in the example below, the interval would stop at row 320, and a new interval
started at row 334.

> head (D, 20)
        Salt       time
319 35.63190 2004-07-26
320 35.66033 2004-07-27
321       NA 2004-07-28
322       NA 2004-07-29
323       NA 2004-07-30
324       NA 2004-07-31
325       NA 2004-08-01
326       NA 2004-08-02
327       NA 2004-08-03
328       NA 2004-08-04
329       NA 2004-08-05
330       NA 2004-08-06
331       NA 2004-08-07
332       NA 2004-08-08
333       NA 2004-08-09
334 35.57781 2004-08-10
335 35.59829 2004-08-11

Many thanks, Helene



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