Re: [R] $ operator is invalid for atomic vectors
Hi, If x is a data frame, then x$getmean will try to get the vector named getmean in x. You put "()" after x$getmean. I think r is confused about it. It appears that you want to call a function named getmean(). -- View this message in context: http://r.789695.n4.nabble.com/operator-is-invalid-for-atomic-vectors-tp4703112p4703114.html Sent from the R help mailing list archive at Nabble.com. __ 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.
Re: [R] $ operator is invalid for atomic vectors
> 2) Make the vector a list. I don't know if there are side-Effects to > this, but perhaps it's just the anxiety of a Java-Programmer who isn't > used to the somewhat easy-going way R deals with classes: >class(dataf2) <- "list" Indeed, there are _many_ side effects to this and you really should read up on the differences, but this really is a bad idea in general. To make it _very_ short, (atomic = regular) vector is a regular array while a list is an associative array. Cheers, Michael __ R-help@r-project.org mailing list 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.
Re: [R] $ operator is invalid for atomic vectors
On 14.09.2012 22:16, Steve Lianoglou wrote:
> Hi,
>
> On Fri, Sep 14, 2012 at 2:33 PM, agrins wrote:
>> HI all-
>>
>> I have used this .fun in S+ without a problem however, in R when I run this
>> code to generate multiple graphs:
>>
>> trendplot<-function(datafr,dataf2, abbrev="", titlestr="",
>> devname="s",filen="",styr=1990,endyr=2012) {
>> if (!is.null(dev.list())) {dev.off()}
>>
>> dataf<-datafr[datafr$abbrev==abbrev,] #subset entire
>> dataset with one
>> species at a time
>> dataf2sp<-dataf2[dataf2$abbrev==abbrev,] etc...
>>
>> It returns "Error in dataf2$abbrev : $ operator is invalid for atomic
>> vectors"
>>
>> Is there an easy fix for this error?
>
> I suspect you just have to ensure that the thing you are passing in to
> the `dataf2` parameter is in fact a data.frame -- the error you are
> getting suggests that it is currently not.
>
> Also -- have no fear for the space bar, it is your friend ;-)
>
Hello,
I had a similar problem and I found two solutions
1) Don't use the $ op on atomic vectors;-). Instead try:
dataf2sp<-dataf2[dataf2["abbrev"]==abbrev,]
2) Make the vector a list. I don't know if there are side-Effects to
this, but perhaps it's just the anxiety of a Java-Programmer who isn't
used to the somewhat easy-going way R deals with classes:
class(dataf2) <- "list"
Regards,
Moritz
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Re: [R] $ operator is invalid for atomic vectors
Hi,
On Fri, Sep 14, 2012 at 2:33 PM, agrins wrote:
> HI all-
>
> I have used this .fun in S+ without a problem however, in R when I run this
> code to generate multiple graphs:
>
> trendplot<-function(datafr,dataf2, abbrev="", titlestr="",
> devname="s",filen="",styr=1990,endyr=2012) {
> if (!is.null(dev.list())) {dev.off()}
>
> dataf<-datafr[datafr$abbrev==abbrev,] #subset entire
> dataset with one
> species at a time
> dataf2sp<-dataf2[dataf2$abbrev==abbrev,] etc...
>
> It returns "Error in dataf2$abbrev : $ operator is invalid for atomic
> vectors"
>
> Is there an easy fix for this error?
I suspect you just have to ensure that the thing you are passing in to
the `dataf2` parameter is in fact a data.frame -- the error you are
getting suggests that it is currently not.
Also -- have no fear for the space bar, it is your friend ;-)
--
Steve Lianoglou
Graduate Student: Computational Systems Biology
| Memorial Sloan-Kettering Cancer Center
| Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact
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[R] $ operator is invalid for atomic vectors
HI all-
I have used this .fun in S+ without a problem however, in R when I run this
code to generate multiple graphs:
trendplot<-function(datafr,dataf2, abbrev="", titlestr="",
devname="s",filen="",styr=1990,endyr=2012) {
if (!is.null(dev.list())) {dev.off()}
dataf<-datafr[datafr$abbrev==abbrev,] #subset entire dataset
with one
species at a time
dataf2sp<-dataf2[dataf2$abbrev==abbrev,] etc...
It returns "Error in dataf2$abbrev : $ operator is invalid for atomic
vectors"
Is there an easy fix for this error?
Thanks for the help-
Alexis
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Re: [R] $ operator is invalid for atomic vectors
Le jeudi 19 avril 2012 à 09:34 +0300, Ana-Maria Dobre a écrit : > I have got the following statement: > > *> overview.domains$sample.var <- aggregate(migr$amigo.migr, > by=list(siruta=amigo$siruta), var)[,-1]/overview.domains$n.i.* > *Error in migr$amigo.migr : $ operator is invalid for atomic vectors* > > > What should i do to solve this error? Well, the error says it all: migr is a not a list, so you cannot use $ on it. The object is probably not what you think it is. Hope this helps __ R-help@r-project.org mailing list 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.
[R] $ operator is invalid for atomic vectors
I have got the following statement: *> overview.domains$sample.var <- aggregate(migr$amigo.migr, by=list(siruta=amigo$siruta), var)[,-1]/overview.domains$n.i.* *Error in migr$amigo.migr : $ operator is invalid for atomic vectors* What should i do to solve this error? Thank you. Kind regards, Ana Maria Dobre [[alternative HTML version deleted]] __ R-help@r-project.org mailing list 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.
Re: [R] $ operator is invalid for atomic vectors
Amy
It would have been helpful if you had sent your R code of how you
constructed the sab object.
If you have a data.frame, the subset command you are having trouble with
should work fine. See below.
# Working Example
sab = data.frame(group=c('Group A', 'Group A', 'Group C', 'Group B', 'Group
C'), gender=c(1,1,1,2,2))
subset(sab, sab$group=='Group A')
Perhaps your data is stored as a matrix? If so, the following code will fail
with the error message you experienced.
# Non Working Example
sab2 = matrix(c('Group A', 'Group A', 'Group C', 'Group B', 'Group
C',1,1,1,2,2),5,2)
subset(sab2, sab2$group=='Group A')
HTH
Pete
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Re: [R] $ operator is invalid for atomic vectors, returning NULL - what is the right thing to do then?
On 12/6/2007 7:04 AM, Søren Højsgaard wrote: > Dear all, > Starting from a recent version of R, the $ became "unusable" on atomic > vectors, e.g. >> x <- c(a=1,b=2) >> x$a > NULL > Warning message: > In x$a : $ operator is invalid for atomic vectors, returning NULL > > I can of course do >> x['a'] > - but that requires more typing (5 characters rather than 2). > > Apologies if I've missed a an announcement regarding this, but > 1) Is there an alternative to the ['a'] and > 2) Why was this change made? There's an announcement in the NEWS file for 2.6.0 DEPRECATED & DEFUNCT o $ on an atomic vector now gives a warning that it is 'invalid'. It remains deprecated, but may be removed in R >= 2.7.0. and an update in R-devel saying that in fact it has been made defunct there. In answer to your questions: 1) I don't think so, other than x[1]. 2) I don't remember the details, other than it was to avoid confusion. Maybe someone else can summarize the discussion? Duncan Murdoch __ R-help@r-project.org mailing list 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.
Re: [R] $ operator is invalid for atomic vectors, returning NULL
On 06-Dec-07 12:04:56, Søren Højsgaard wrote: > Dear all, > Starting from a recent version of R, the $ became "unusable" > on atomic vectors, e.g. >> x <- c(a=1,b=2) >> x$a > NULL > Warning message: > In x$a : $ operator is invalid for atomic vectors, returning NULL > > I can of course do >> x['a'] > - but that requires more typing (5 characters rather than 2). > > Apologies if I've missed a an announcement regarding this, but > 1) Is there an alternative to the ['a'] and > 2) Why was this change made? While Brian has answered your query from a more technical point of view, there's an implication you should consider. x$a always (as far as I know)[*] has been "unusable", in that it returns NULL, and not what you expected to get. The only thing that's (relatively) new is that you now get a warning. [*] Certainly as early as R-1.6.2 (Jan 2003), as I've just checked. Previously, you were not getting a warning. So, if you were using the likes of x$a in code, and getting no warnings, possibly your code was generating results derived from NULL values rather than from the values you expected it to be using. Perhaps you should check back! Best wishes, Ted. E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 094 0861 Date: 06-Dec-07 Time: 12:39:49 -- XFMail -- __ R-help@r-project.org mailing list 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.
Re: [R] $ operator is invalid for atomic vectors, returning NULL - what is the right thing to do then?
On Thu, 6 Dec 2007, Søren Højsgaard wrote: Dear all, Starting from a recent version of R, From R 2.5.0, not so recent. the $ became "unusable" on atomic vectors, e.g. x <- c(a=1,b=2) x$a NULL Warning message: In x$a : $ operator is invalid for atomic vectors, returning NULL I can of course do x['a'] - but that requires more typing (5 characters rather than 2). Apologies if I've missed a an announcement regarding this, but 1) Is there an alternative to the ['a'] and 2) Why was this change made? It has always returned NULL on atomic vectors: see the help page. E.g. in R 2.0.0 from 2004: x <- c(a=1,b=2) x$a NULL x['a'] a 1 The warning was added three versions of R ago: the announcement is in the NEWS file for 2.5.0. USER-VISIBLE CHANGES o Using $ on an atomic vector now raises a warning, as does use on an S4 class for which a method has not been defined. I think you have exemplified the answer to your question '2)': because users misunderstood what it did. In R 2.7.0 this will be an error, since package programmers did not seem to be heeding the warnings. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UKFax: +44 1865 272595__ R-help@r-project.org mailing list 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.
[R] $ operator is invalid for atomic vectors, returning NULL - what is the right thing to do then?
Dear all, Starting from a recent version of R, the $ became "unusable" on atomic vectors, e.g. > x <- c(a=1,b=2) > x$a NULL Warning message: In x$a : $ operator is invalid for atomic vectors, returning NULL I can of course do > x['a'] - but that requires more typing (5 characters rather than 2). Apologies if I've missed a an announcement regarding this, but 1) Is there an alternative to the ['a'] and 2) Why was this change made? Regards Søren __ R-help@r-project.org mailing list 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.
