[R] News from your Bank

2005-09-01 Thread Clement
Aeacides [[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

Re: [R] PCA problem in R

2005-08-14 Thread R . P . Clement
Hi. I have two comments on this. Quoting Prof Brian Ripley [EMAIL PROTECTED]: On Sat, 13 Aug 2005, Alan Zhao wrote: When I have more variables than units, say a 195*10896 matrix which has 10896 variables and 195 samples. prcomp will give only 195 principal components. I checked in the

[R] Uses of isoMDS()

2005-06-06 Thread Ross Clement
Hi. I'm using the isoMDS() function of the MASS library for multidimensional scaling. I have two questions that I have not been able to solve by searching through the archives. (i) What is the exact stress measure used? The text in the help file says: This chooses a k-dimensional (default k

Re: [R] Uses of isoMDS()

2005-06-06 Thread Ross Clement
Thanks to all for both the public and private answers on this topic. It looks like from your answers that I'll have to wait for Modern Applied Statistics with S to arrive at my local library (already requested) before there's a chance that things will become clear. As for C/R hybrids, if things

[R] Stats Question: Single data item versus Sample from Normal Distribution

2005-04-05 Thread Ross Clement
, or are there packages I could use? Thanks in anticipation, Ross Clement. __ 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

[R] 3d plot of regression squared error

2005-03-03 Thread Ross Clement
Hi. I'm trying to create a 3d plot for a teaching example of finding a least-squares estimate of the parameters to fit a line to some data. I was hoping to get a nice plot with a clear, single minima where the derivative of the surface is zero. No matter how much I tinker, I can't seem to get a

[R] Fun and games with lowess()

2005-03-01 Thread Ross Clement
This is not a help request, just an experience with R that I found amusing. I have a machine learning module that I teach which was originally all symbolic, but has a slowly growing numeric/statistical component. Today I taught a two part lecture on instance based methods for learning, with the

RE: [R] Protocol for answering basic questions

2004-12-04 Thread Ross Clement
I'm a recent subscriber to the list. I was very impressed by the quality of people subscribing to the list, including the authors of all the books on R thateither I own or are present in my local uni library. However, I was astonished by the volume of messages. I have set up a folder for R

[R] labelling barplot

2004-11-27 Thread Ross Clement
. I'd like to have a barplot where only the extremes 1 and 5 are labelled. How do I do this? Thanks in anticipation, Ross Clement __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R

Re: [R] problem with installation on Linux (beginners)

2004-10-25 Thread Ross Clement
On Mon, 2004-10-25 at 16:04, Peter Dalgaard wrote: Alicia Amadoz [EMAIL PROTECTED] writes: What happens if you type 'which R'? What is the version of R and what is in your path? I suspect you are somehow trying to run the R binary, bypassing the R shell script, which sets things like

Re: [R] problem with installation on Linux (beginners)

2004-10-25 Thread Ross Clement
Please excuse my previous email. I was going to follow up Peter's post showing that if I run the R binary directly I get exactly the error message reported by the original poster. Unfortunately, after I decided that was too trivial to post, as my mouse headed towards the X button to kill the email