R help - Jan 2008 - box plot

the data is attached

I want to boxplot this data

y<-read.table("afdmmgs.txt", header=T)
boxplot(y)

Error in oldClass(stats) <- cl :
  adding class "factor" to an invalid object
I get this error when I try and plot something with na in it

can boxplot just overlook the na and boxplot the values?

stephen


-- 
Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis
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2008/1/31 stephen sefick <ssefick at gmail.com>:
> the data is attached
Thanks.
> I want to boxplot this data
>
> y<-read.table("afdmmgs.txt", header=T)
> boxplot(y)
At this point you should use

str(y)

to examine the structure of the data.
> str(y)
'data.frame':	4 obs. of  12 variables:
 $ X215: num   30002 223630 316722 125081
 $ sc  : Factor w/ 3 levels "10894.12023",..: 1 2 3 3
 $ X202: Factor w/ 4 levels "25572.94416",..: 1 2 3 4
 $ X198: Factor w/ 3 levels "40899.10425",..: 1 2 3 3
 $ hc  : num    9731  13503 459246   9574
 $ X190: num  46442 48592 82827 49852
 $ bc  : Factor w/ 3 levels "150297.1089",..: 2 1 3 3
 $ X185: Factor w/ 4 levels "49759.77869",..: 3 1 2 4
 $ X179: Factor w/ 3 levels "163687.2308",..: 1 2 3 3
 $ X148: num  278803 267594 457433 272564
 $ X119: num  326021 292475 956482 201198
 $ X61 : num   386116  390206 1002466  322183
> y$bc
[1] 26617.8358  150297.1089 na          na
Levels: 150297.1089 26617.8358 na

So what has happened is that your lower case 'na' is not recognized as
a missing value code.  Now go back and try
> y <- read.table("/home/bates/Desktop/afdmmgs.txt", header =
TRUE, na.strings = "na")
> str(y)
'data.frame':	4 obs. of  12 variables:
 $ X215: num   30002 223630 316722 125081
 $ sc  : num  10894 17648    NA    NA
 $ X202: num  25573 47692 99062    NA
 $ X198: num  40899 79627    NA    NA
 $ hc  : num    9731  13503 459246   9574
 $ X190: num  46442 48592 82827 49852
 $ bc  : num   26618 150297     NA     NA
 $ X185: num  80735 49760 66975    NA
 $ X179: num  163687 318565     NA     NA
 $ X148: num  278803 267594 457433 272564
 $ X119: num  326021 292475 956482 201198
 $ X61 : num   386116  390206 1002466  322183

and things will work better.
> Error in oldClass(stats) <- cl :
>   adding class "factor" to an invalid object
> I get this error when I try and plot something with na in it
>
> can boxplot just overlook the na and boxplot the values?
>
> stephen
>
>
> --
> Let's not spend our time and resources thinking about things that are
> so little or so large that all they really do for us is puff us up and
> make us feel like gods.  We are mammals, and have not exhausted the
> annoying little problems of being mammals.
>
>                                                                 -K. Mullis
>
> ______________________________________________
> R-help at 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.
>
>

Note that R is case sensitive.

(Hint: ``na'' is not the same thing as ``NA'' !!!)

	cheers,

		Rolf Turner


On 1/02/2008, at 9:21 AM, stephen sefick wrote:
> the data is attached
>
> I want to boxplot this data
>
> y<-read.table("afdmmgs.txt", header=T)
> boxplot(y)
>
> Error in oldClass(stats) <- cl :
>   adding class "factor" to an invalid object
> I get this error when I try and plot something with na in it
>
> can boxplot just overlook the na and boxplot the values?
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