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
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