[R] sorting of data

[Jim Porzak]

One of the most useful functions:
?subset

as in

nsmSubData <- subset(nsmalldata, SESSIONID==7757513)


On 10/26/05, Bill Hunsicker <BHunsicker at rfmd.com> wrote:
> R-Help,
>
>
>
> I am trying to reduce at data set to rows where a specified value occurs
> in a specified value.  Below is a screen capture of Rgui:
>
>
>
> > nsmalldata <-read.csv("c:\\DATA\\UNITY\\\PASS0_DOWNFADE\\nsmall.csv")
>
> > nsmalldata
>
>    BOARDNUMBER SESSIONID MATRIXID ARRAYPOINT Temperature   PS1   PS2
> PS13 PS14 PS15
>
> 1        LB0DC      3043  7757513          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 2        LB0DC      3043  7757515          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 3        LB0DC      3043  7757517          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 4        LB0DC      3043  7757520          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 5        LB0DC      3043  7757522          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 6        LB0DC      3043  7757524          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 7        LB0DC      3043  7757526          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 8        LB0DC      3043  7757528          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 9        LB0DC      3043  7757531          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 10       LB0DC      3043  7757533          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 11       LB0DC      3043  7757535          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 12       LB0DC      3043  7757537          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 13       LB0DC      3043  7757540          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 14       LB0DC      3043  7757542          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 15       LB0DC      3043  7757544          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 16       LB0DC      3043  7757547          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 17       LB0DC      3043  7757549          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 18       LB0DC      3043  7757551          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 19       LB0DC      3043  7757554          1       -9999 -9999 -9999
> 3.6    5   -5
>
> 20       LB0DC      3043  7757556          1       -9999 -9999 -9999
> 3.6    5   -5
>
> >
>
>
>
> For Example
>
> I would like to reduce nsmalldata to only the rows where
> SESSIONID==7757513
>
> I have spent quite a bit of time with R manuals and still have not
> gotten there, can you help me?
>
>
>
> Thanks in advance.
>
>
>
> Regards,
>
> Bill
>
>
>
> Bill Hunsicker
>
> RF Micro Devices
>
> 7625 Thorndike Road
>
> Greensboro, NC  27409
>
> 336-678-5260(W)
>
> 610-579-9985(M)
>
>
>
>
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>
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--
HTH,
Jim Porzak
Loyalty Matrix Inc.
San Francisco, CA