
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.
Please be nicer next time.
Suhaila.
> CC: r-help@r-project.org
> From: dwinsemius@comcast.net
> To: bell_beauty12@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 this http://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_beauty12@hotmail.com
> > To: jholtman@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: jholtman@gmail.com
> >> To: bell_beauty12@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_beauty12@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.goslee@gmail.com
> >> To: bell_beauty12@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_beauty12@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
> 
 		 	   		  
	[[alternative HTML version deleted]]

