R is largely a functional language. You do something to an input and end up with an output that has no effect on the input. This is actually a highly desirable feature.
If you want your df variable to reflect changes made then you need to assign your result back into it. df <- df %>% mutate(v1 = as.double(v1)) (Note that the data.table package violates this principle and is controversial as a result.) On July 25, 2020 12:11:24 PM PDT, H <age...@meddatainc.com> wrote: >In a statement like: > >df %>% mutate(v1 = as.double(v1)) > >I expect the variable v1 in dataframe df to have been converted into a >double. However, when I do: > >str(df) > >v1 still shows as int. Do I need to save the modified dataframe after >mutating a variable? > >______________________________________________ >R-help@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. -- Sent from my phone. Please excuse my brevity. ______________________________________________ R-help@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.
