search for: reclassing

...ain "x" are still considered factors and I am unable to coerce them into numeric: > mean.species.biomass<-colMeans(as.numeric(dd.p[,5:12])) >Error in inherits(x, "data.frame") : (list) object cannot be coerced to type 'double' I'm tried unclassing & reclassing, other functions etc. but nothing seems to work. What is wrong? Thanks in advance, Allen -- View this message in context: http://n4.nabble.com/Class-attributes-tp948693p948693.html Sent from the R help mailing list archive at Nabble.com.

Hi all, I noticed that `range.default()` has a nice `finite = TRUE` argument, but it doesn't actually apply to Date or POSIXct due to how `is.numeric()` works. ``` x <- .Date(c(0, Inf, 1, 2, Inf)) x #> [1] "1970-01-01" "Inf" "1970-01-02" "1970-01-03" "Inf" # Darn! range(x, finite = TRUE) #> [1] "1970-01-01"

Is there an R equivalent to SAS's proc gremove? You would use this procedure to combine the units on an existing map, for example to build a map of Metropolitan Statistical Areas (MSAs) from the [US] counties dataset where the internal boundries surround the MSAs (which are groups of counties) rather than the individual counties. I can imagine the mechanism would be to find and erase the

A tiny nit-pick: Seems to me that end date = NA would mean the event has not yet ended, whilst Inf would mean that the event is known to never terminate, ie: an eternal fact, or physical law. On Fri, Apr 28, 2023 at 10:12?AM Davis Vaughan via R-devel < r-devel at r-project.org> wrote: > Hi all, > > I noticed that `range.default()` has a nice `finite = TRUE` argument, > but it

Hi Abs, Lets try to remain civil even when disagreeing about major design philosophies, ok? On Tue, Mar 26, 2019 at 2:08 PM Abs Spurdle <spurdle.a at gmail.com> wrote: > If I can merge this thread with the one I started yesterday... > > > "If the object does not have a class attribute, it has an implicit > class..." > > which I take to mean that if an object

Hi All, I think there may be some possible confusion about what allowsInf would be reporting (or maybe its just me :) ) if we did this. Consider a class "myclass", S3, for starters, with setMethod("allowsInf", "myclass", function(obj) FALSE) Then, what would myclassthing <- structure(1.5, class = "mything") myclassthing[1] <- Inf do. Assumely it

If I can merge this thread with the one I started yesterday... > "If the object does not have a class attribute, it has an implicit class..." > which I take to mean that if an object does have a class attribute it does not also have an implicit class. > I think this is reasonable behavior. Consider the "Date" class, which stores values as "numeric": >

Hi, I don't understand the following. When I create a small artificial set of date information in class POSIXct, I can calculate the mean and the median: a = as.POSIXct(Sys.time()) a = a + 60*0:10; a [1] "2009-03-10 11:30:16 EDT" "2009-03-10 11:31:16 EDT" "2009-03-10 11:32:16 EDT" [4] "2009-03-10 11:33:16 EDT" "2009-03-10 11:34:16

Hello, This is mostly to developers, but in case I missed something in my literature search, I am sending this to the broader audience. - Are there any plans in the works to make "time" classes a bit more friendly to the rest of the "R" world? I am not suggesting to allow for fancy functions to manipulate times, per se, or to figure out how to properly

Hello, This is mostly to developers, but in case I missed something in my literature search, I am sending this to the broader audience. - Are there any plans in the works to make "time" classes a bit more friendly to the rest of the "R" world? I am not suggesting to allow for fancy functions to manipulate times, per se, or to figure out how to properly