[R] Problem with Median

[Duncan Murdoch]

On 07/05/2012 3:05 PM, Suhaila Haji Mohd Hussin wrote:
> I might be silly but if I was going to type in dput() then how should I send the data over here?

Cut and paste.  For example,  if I have a dataframe named x and type 
dput(x), I see

structure(list(a = 1:10), .Names = "a", row.names = c(NA, -10L
), class = "data.frame")

If you run

x <- structure(list(a = 1:10), .Names = "a", row.names = c(NA, -10L
), class = "data.frame")

you'll get a dataframe that looks just like mine.  Then you can start to 
answer questions about it.

I can't do anything with your jpeg to answer your questions about your 
dataframe.

Duncan Murdoch

> 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 at gmail.com
> >  To: bell_beauty12 at hotmail.com
> >  CC: r-help at 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 at 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
>   		 	   		
>
>
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