One of the most useful functions: ?subset as in
nsmSubData <- subset(nsmalldata, SESSIONID==7757513) On 10/26/05, Bill Hunsicker <[EMAIL PROTECTED]> 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) > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > -- HTH, Jim Porzak Loyalty Matrix Inc. San Francisco, CA ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html