On May 8, 2012, at 4:35 AM, Suhaila Haji Mohd Hussin wrote:
Hello.
Sorry if that's considered laziness as I've just learnt R and didn't
know how important it is to do dput for all problems.
If I was truly lazy then I wouldn't even bother to sign up here and
ask questions.
I didn't say you were lazy. I implied that you were being
insufficiently lazy. It would have been much easier (had you read the
Posting Guide and been properly lazy) to use either dump or dput to
post machine readable versions of your data than to make a jpg and
post it on an external website.
I considered, but then decided that it was probablyunnecessary,
offering a link to what is a fairly famous piece by Larry Wall
explaining that one _should_ be lazy if one wants to be a good
programmer. The Three Virtues: Laziness, Impatience, Hubris:
http://c2.com/cgi/wiki?LazinessImpatienceHubris
--
David.
Please be nicer next time.
Suhaila.
> CC: r-help@r-project.org
> From: dwinsem...@comcast.net
> To: bell_beaut...@hotmail.com
> Subject: Re: [R] Problem with Median
> Date: Mon, 7 May 2012 20:25:24 -0400
>
>
> On May 7, 2012, at 5:16 PM, Suhaila Haji Mohd Hussin wrote:
>
> >
> > Hello.
> > Now the median is solved but then I'm still figuring out how to
put
> > the updated column back to replace the original column of the
whole
> > data. I'll show you what I meant:
> > Continuing from the previous commands you guys helped out I
> > continued as followed:
> > Original Data: http://i1165.photobucket.com/albums/q585/halfpirate/data.jpg
> >
> > Before column a: http://i1165.photobucket.com/albums/q585/halfpirate/1.jpg
>
> That fine for sending pictures to the family but NOT for
communicating
> R code.
> >
> > 1) a.AC [is.na(a.AC)] <- median(a.AC$a, na.rm= TRUE)
> > 2) a.ACAfter column a:
http://i1165.photobucket.com/albums/q585/halfpirate/2.jpg
> > 3) data$a <- a.ACGives me error that the original data has 6 rows
> > yet the one I'm replacing is 1 row.
> > I understand the error and I don't want to completely replace the
> > column if I really want to.
>
> You were not attempting to replace the entire column, but you were
> trying to replace 6 entries. So why not... :
>
> a.AC [is.na(a.AC)] <- rep( median(a.AC$a, na.rm= TRUE) , 6)
>
>
> > Basically I'm expecting the result to be like this. After you
> > compare the original data, the final answer should be like
thishttp://i1165.photobucket.com/albums/q585/halfpirate/3.jpg
>
> What part of "I can't do anything with your jpeg to answer your
> questions about your dataframe" was difficult to understand? We do
NOT
> want pictures from which we need to repeat data entry that you have
> already done. The first virtue of a programmer being laziness.
> Console output is also very ambiguous. Learn to use str() and dput()
> or dump().
>
> ?dput
> ?dump
>
> And run the examples. please.
>
> --
> David.
>
>
> > Please help.Suhaila
> > From: bell_beaut...@hotmail.com
> > To: jholt...@gmail.com
> > CC: r-help@r-project.org
> > Subject: RE: [R] Problem with Median
> > Date: Tue, 8 May 2012 07:22:19 +1200
> >
> > Thank you so much!
> > Suhaila.
> >
> >> Date: Mon, 7 May 2012 15:08:47 -0400
> >> Subject: Re: [R] Problem with Median
> >> From: jholt...@gmail.com
> >> To: bell_beaut...@hotmail.com
> >>
> >> Your problem is that a.AC is a dataframe:
> >>
> >>
> >>> x <- read.table(text = " a b c class
> >> + 1 12 0 90 A-B
> >> + 2 3 97 11 A-B
> >> + 3 78 NA 123 A-C
> >> + 4 NA NA 12 A-C
> >> + 5 8 33 2 A-B
> >> + 6 12 NA 0 A-D", header = TRUE)
> >>> a.AC <- subset(x, class == "A-C", select = a)
> >>> # same error
> >>> median(a.AC)
> >> Error in median.default(a.AC) : need numeric data
> >>
> >>> # now look a the structure of a.AC (its a dataframe)
> >>> str(a.AC)
> >> 'data.frame': 2 obs. of 1 variable:
> >> $ a: int 78 NA
> >>> # now do it right
> >>> median(a.AC$a)
> >> [1] NA
> >>> median(a.AC$a, na.rm = TRUE)
> >> [1] 78
> >>
> >>
> >>
> >> On Mon, May 7, 2012 at 2:52 PM, Suhaila Haji Mohd Hussin
> >> <bell_beaut...@hotmail.com> wrote:
> >>>
> >>> Hello.
> >>> I'm trying to compute median for a filtered column based on
other
> >>> column but there was something wrong. I'll show how I did step
by
> >>> step.
> >>> Here's the data:
> >>> a b c class
> >>>
> >>> 1 12 0 90 A-B2 3 97 11 A-B3 78 NA
> >>> 123 A-C4 NA NA 12 A-C5 8 33 2 A-B6
> >>> 12 NA 0 A-D
> >>> On the command I typed:
> >>> 1) data = read.csv("data.csv")
> >>>
> >>> 2) a.AC <- subset(data, class == "A-C", select = a)
> >>> 3) median(a.AC)Error in median.default(a.AC) : need numeric data
> >>> 4) is.numeric(a.AC)FALSE
> >>> 5) as.numeric(a.AC)Error: (list) object cannot be coerced to
type
> >>> 'double'
> >>> How can I fix this? Please help.
> >>> Cheers,Suhaila
> >>> [[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.
> >>
> >>
> >>
> >> --
> >> Jim Holtman
> >> Data Munger Guru
> >>
> >> What is the problem that you are trying to solve?
> >> Tell me what you want to do, not how you want to do it.
> >
> >
> > I might be silly but if I was going to type in dput() then how
> > should I send the data over here?
> > Instead, I've just uploaded the image online, you can access it
via
> > the link below.
> > http://i1165.photobucket.com/albums/q585/halfpirate/data.jpg
> >
> >> Date: Mon, 7 May 2012 14:55:24 -0400
> >> Subject: Re: [R] Problem with Median
> >> From: sarah.gos...@gmail.com
> >> To: bell_beaut...@hotmail.com
> >> CC: r-help@r-project.org
> >>
> >> Please use dput() to give us your data (eg dput(data) ) rather
than
> >> simply pasting it in.
> >>
> >> Sarah
> >>
> >> On Mon, May 7, 2012 at 2:52 PM, Suhaila Haji Mohd Hussin
> >> <bell_beaut...@hotmail.com> wrote:
> >>>
> >>> Hello.
> >>> I'm trying to compute median for a filtered column based on
other
> >>> column but there was something wrong. I'll show how I did step
by
> >>> step.
> >>> Here's the data:
> >>> a b c class
> >>>
> >>> 1 12 0 90 A-B2 3 97 11 A-B3 78 NA
> >>> 123 A-C4 NA NA 12 A-C5 8 33 2 A-B6
> >>> 12 NA 0 A-D
> >>> On the command I typed:
> >>> 1) data = read.csv("data.csv")
> >>>
> >>> 2) a.AC <- subset(data, class == "A-C", select = a)
> >>> 3) median(a.AC)Error in median.default(a.AC) : need numeric data
> >>> 4) is.numeric(a.AC)FALSE
> >>> 5) as.numeric(a.AC)Error: (list) object cannot be coerced to
type
> >>> 'double'
> >>> How can I fix this? Please help.
> >>> Cheers,Suhaila
> >>
> >>
> >> --
> >> Sarah Goslee
> >> http://www.functionaldiversity.org
> >
> >
> > [[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.
>
> David Winsemius, MD
> West Hartford, CT
>
David Winsemius, MD
West Hartford, CT
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
