search for: siegrist

I want to sample within groups, and when a group has only one associated number to just return that number. If I use this code: groups <- c(1, 2, 2, 2, 3) numbers <- 1:5 tapply(numbers, groups, FUN = sample) I get the following output: > groups <- c(1, 2, 2, 2, 3) > numbers <- 1:5 > tapply(numbers, groups, FUN = sample) $`1` [1] 1 $`2` [1] 3 2 4 $`3` [1] 2 3 5 1 4

Hello, The function barplot automatically creates a y-axis that doesn't necessarily cover the range of y-values to be plotted. I know how to manually create my own y-axis so that it does cover the range, but I was wondering if there is some parameter to change so that the scale of the y-axis is automatically taller than the tallest bar. I thought setting xpd=F would do it, since it says that

...MeanByRowTraits #But now to get the means for the rows by column groups is awkward rotateData <- data.frame(t(MeanByRowTraits[2:5])) colnames(rotateData) <- c(levels(rowFactor[,1])) rotateData #This is the kind of result I want in the end aggregate (rotateData, colFactor[1], mean) -- Jack Siegrist Graduate Program in Ecology & Evolution, and Department of Ecology, Evolution, & Natural Resources, Rutgers University, New Brunswick, NJ 08901

We are doing a power analysis by generating noisy data sets according to a model, fitting the model to the data, and extracting a p-value. What is the best way to do this many times? We are just using for loops and it is too slow because we are repeating the analysis for many parameterizations. I can think of several ways to do this: for loop sapply using the plyr package using the lme4 package

I have a Cisco 7940 when you call in from outside and dial the Cisco phone extension I get this Read_channel ## vpb/1-3: Setting record mode, bridge = 0 WARNING[18451]: File chan_sip.c, Line 1111 (sip_write): Asked to transmit frame type 8, while native formats is 4 (read/write = 4/4) == Spawn extension (default, 1004, 1) exited non-zero on 'vpb/1-3' -- hangup on vpb (vpb/1-3)

Hello folks, I am a beginner R user. I have been able to make a 3D surface plot using 'persp'. The surface is made by a grid of lines emanating perpendicularly from each of the x and y axes at regular intervals. I can get rid of that grid by setting 'border=NA'. Can anyone suggest some ways to replace the grid with contour lines, to create a 3-dimensional contour map? Thanks

...ars by multiple factors (Mike Lawrence)   74. alternative to built-in data editor (Jose Quesada)   75. no internal function "int.unzip" in R 2.9.0 for Windows       (Carson, John)   76. "Error: package/namespace load failed" (Rebecca Sela)   77. contour lines on persp plot (Jack Siegrist)   78. Re: Neural Network resource (Indrajit Sengupta)   79. Re: alternative to built-in data editor (Peter Dalgaard)   80.  r-plot 2nd attempt (durden10)   81. R-beta: Re:Stats Seminar 18/02/98 (Roland Chariatte)   82.  problem with cbind (kayj)   83. interpretation of the likelihood ratio test un...

* What were your biggest misconceptions or stumbling blocks to getting up and running with R? * What documents helped you the most in this initial phase? I especially want to hear from people who are lazy and impatient. Feel free to write to me off-list. Definitely write off-list if you are just confirming what has been said on-list. -- Patrick Burns pburns at pburns.seanet.com

Hello folks, Is there a way to invert the z axis in a 'persp' plot? I tried using 'zlim=rev(range(z))', which would work with 'plot' but does not work in this case. Thank you for your help.