[R] if else for cumulative sum error
John McKown
john.archie.mckown at gmail.com
Tue Dec 2 19:22:22 CET 2014
On Tue, Dec 2, 2014 at 12:08 PM, Jefferson Ferreira-Ferreira <
jecogeo at gmail.com> wrote:
> Hello everybody;
>
> I'm writing a code where part of it is as follows:
>
> for (i in nrow(dadosmax)){
> dadosmax$enchday[i] <- if (sum(dadosmax$above[i:(i+44)]) >= 45) 1 else 0
> }
>
Without some test data for any validation, I would try the following
formula
dadosmax$enchday[i] <- if (sum(dadosmax$above[i:(min(i+44,nrow(dadosmax)))]
>= 45) 1 else 0
>
> That is for each row of my data frame, sum an specific column (0 or 1) of
> that row plus 44 rows. If It is >=45 than enchday is 1 else 0.
>
> The following error is returned:
>
> Error in if (sum(dadosmax$above[i:(i + 44)]) >= 45) 1 else 0 :
> missing value where TRUE/FALSE needed
>
> I've tested the ifelse statement assigning different values to i and it
> works. So I'm wondering if this error is due the fact that at the final of
> my data frame there aren't 45 rows to sum anymore. I tried to use "try" but
> It's simply hide the error.
>
> How can I deal with this? Any ideas?
> Thank you very much.
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
The temperature of the aqueous content of an unremittingly ogled
culinary vessel will not achieve 100 degrees on the Celsius scale.
Maranatha! <><
John McKown
[[alternative HTML version deleted]]
More information about the R-help
mailing list