Re: [R] using if else function to complete a column in data frame

> On Jan 8, 2017, at 9:21 PM, Cacique Samurai wrote: > > Hello all! > > I´m trying to complete the "movimento" column in dataframe based in > the values of "kmr" column in two sequential lines, as below: > > data example (dput in the end of email): > > IDkmr movimento > 510.70

Re: [R] using if else function to complete a column in data frame

Hi Split option seems to me the most effective and ifelse is in this case not necessary. You can use this function to estimate levels fff <- function(x) sign(diff(x)) test.s <- split(test, test$ID) for (i in 1:length(test.s)) test.s[[i]]$movimento[-1] <- fff(test.s[[i]][,2]) test <- do.call(rbi

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[R] using if else function to complete a column in data frame

Hello all! I´m trying to complete the "movimento" column in dataframe based in the values of "kmr" column in two sequential lines, as below: data example (dput in the end of email): IDkmr movimento 510.700 314.20NA 110.700 278.74NA 210.700 278.74N

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Small example code to set up the problem? JN On 2017-01-07 06:26 AM, Preetam Pal wrote: > Hi Guys, > Any help with this,please? > Regards, > Preetam > > On Thu, Jan 5, 2017 at 4:09 AM, Preetam Pal wrote: > >> Hello guys, >> >> The context is ordinary multivariate regression with k (>1) regress