[R] remove loop which compares row i to row i-1
David Winsemius
dwinsemius at comcast.net
Fri Jul 6 05:30:27 CEST 2012
On Jul 5, 2012, at 6:52 PM, jcrosbie wrote:
> Thank you,
>
> I tired
>
> ifelse(tUnitsort[length(tUnitsort$Hour),4]>=tUnitsort[-1,4],(tempMC
> =tUnitsort[length(tUnitsort$Hour),7]),tempMC )
Presumably tempMC is a vector of the appropriate length, in which case
this should repalce that loop:
tempMC [ diff(tUnitsort) > 0 ] <- tUnitsort[ , 7][ diff(tUnitsort) >
0 ]
>
> But this doesn't seem to work.
Doesn't work .... means what?
>
> Where am I going wrong?
How can we tell without a worked example????
>
> --
> View this message in context: http://r.789695.n4.nabble.com/remove-loop-which-compares-row-i-to-row-i-1-tp4635327p4635566.html
> Sent from the R help mailing list archive at Nabble.com.
Dear tired Nabble user. Please read the Posting Guide.
>
> >>>>>>>>>>>>>>>>>>>>>>>>
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>>>>>>>AND>>>>>>>>
> .....provide commented, minimal, self-contained, reproducible code.
--
David Winsemius, MD
West Hartford, CT
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