search for: matthew_wien

Take a look at package mgcv. Hope this helps. --Matt -----Original Message----- From: RenE J.V. Bertin [mailto:rjvbertin at despammed.com] Sent: Thursday, February 27, 2003 1:39 PM To: r-help at stat.math.ethz.ch Subject: [R] multidimensional function fitting Hello, I have been looking around for how to perform a multidimensional, arbitrary function fit (in any case non-linear; more below),

...rjvbertin at despammed.com] > Sent: Thursday, February 27, 2003 3:42 PM > To: Wiener, Matthew > Cc: r-help at stat.math.ethz.ch > Subject: Re: [despammed] RE: [R] multidimensional function fitting > > > On Thu, 27 Feb 2003 13:52:50 -0500, "Wiener, Matthew" > <matthew_wiener at merck.com> wrote regarding > "[despammed] RE: [R] multidimensional function fitting" > > 8-) Take a look at package mgcv. Hope this helps. --Matt > 8-) > > Thank you, I just did. It may indeed be what I'm looking for > (I haven't quite understood...

...age----- From: RenE J.V. Bertin [mailto:rjvbertin at despammed.com] Sent: Thursday, February 27, 2003 3:42 PM To: Wiener, Matthew Cc: r-help at stat.math.ethz.ch Subject: Re: [despammed] RE: [R] multidimensional function fitting On Thu, 27 Feb 2003 13:52:50 -0500, "Wiener, Matthew" <matthew_wiener at merck.com> wrote regarding "[despammed] RE: [R] multidimensional function fitting" 8-) Take a look at package mgcv. Hope this helps. --Matt 8-) Thank you, I just did. It may indeed be what I'm looking for (I haven't quite understood everything about it...), but: 1) T...

Does oneway.test do what you want? Hope this helps, Matt Wiener -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Sven Hartenstein Sent: Monday, June 21, 2004 3:23 PM To: r-help at stat.math.ethz.ch Subject: [R] Welch-JM-Test or Brown-Forsythe-Test in R? Hi, I want to test mean differences of > 2 groups with

Christian -- You don't provide enough information (like a call) to answer this. I suspect, though, that you may be subsetting in a way that passes randomForest no data. I'm not aware offhand of an easy way to get this error from randomForest. I tried creating some data superficially similar to yours to see whether something would break if there were only a single value in the variable

Hi, I apologize if this has previously been posted. I've just subscribed to the R-help digest. I'm writing a plotting function that uses layout() to plot several different plots on the same device. This function uses plot(), image(), and a custom function that uses text(). Each cell of the layout needs different par() parameters, so what I'd like to do is pass them as lists:

It's the "|source" in your formula that tells lattice to separate them. If you drop that, you'll get all points without S and P distinguished at all. If you add a groups argument, you should get them presented with different colors/symbols/etc. depending on your trellis settings (warning: untested code): par.plot(lnvol~lnden, groups =

...t}}, \code{\link[mva]{cutree}} } \examples{ data(USArrests) t1 <- hclust(dist(USArrests)) t2 <- f.get.subtrees(t1, k = 3) # a list with 3 subtrees plot(t2[[1]]) # plot the first subtree t3 <- f.get.subtrees(t1, h = 125) # same as t2 } \author{Matthew Wiener} \email{Matthew_Wiener at merck.com} \keyword{} -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !)...

Greetings. I'm trying to determine whether to use rpart or randomForest for a classification tree. Has anybody tested efficacy formally? I've run both and the confusion matrix for rf beats rpart. I've looking at the rf help page and am unable to figure out how to extract the tree. But more than that I'm looking for a more comprehensive user's guide for randomForest including

Hi, all. I've got a question that arose when I was switching some row and columns in a matrix. I was expecting the row and column names to follow their rows and columns, and they didn't. I think I see some logic to the behavior, but I'm not sure whether it's intentional or not, so I thought I'd ask the list whether this is a feature or a bug. Here's an example (R-1.3.1,

Hi, everyone. As mentioned in my message of earlier today, I'm trying to do hierarchical clustering on a data set that's probably too big. I may have to take a subset eventually, but I'm spending a little time trying to try to reduce memory use in the hope that I'll manage to do the full set. One thing that occurred to me was to modify the underlying fortran code (hclust.f, from

Take a look at the manual page for "layout". The final example does pretty much what you're asking about (with a scatterplot and histograms, but the idea should be the same). Hope this helps, Matthew Wiener Applied Computer Science & Mathematics Dept. Merck Research Labs Rahway, NJ 07090 732-594-5303 -----Original Message----- From: Adaikalavan Ramasamy [mailto:ramasamy at

You're missing a comma in the subscript. The comma tells it that your test is for the appropriate rows. You want: finest[finest[,1] > 10^3,] Hope this helps, Matt Wiener -----Original Message----- From: Edmond Ng [mailto:Edmond.Ng at lshtm.ac.uk] Sent: Monday, March 24, 2003 2:40 PM To: r-help at stat.math.ethz.ch Subject: [R] how to show a section of a matrix neatly (or row by row)

On the first issue, there's a recent post you can find in the archives. It's from Deepayan Sarkar on January 2 this year. It would probably pop up on a search for "black white lattice" or something similar. The key part of his answer: I'd do something like this as part of the initialization: <<...>> library(lattice) ltheme <- canonical.theme(color = FALSE)

Couldn't you do this by subtracting 0.5 + x from your y values and checking for normality with mean 0 and sd = 1 (using ks.test or another test of normality). If you fail, you'll have to do additional work to find out whether pairs with some particular x value (or range of x values) is causing the problem, but I think this fits the question as stated. Of course, if you have discrete x

We had something similar, and as far as I recall the problem turned out to be that we had not set the config file to allow remote connections. This would probably be better put on the Rosuda mailing list: http://mailman.rz.uni-augsburg.de/mailman/listinfo/stats-rosuda-devel Hope this helps, Matt Wiener -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces

This means that the margins for 10 screens would take up more room than you have - essentially the plot area is being squeezed to nothing. You can try reducing your margins using par. Also, it looks like you're trying to split into 20 screens there. Hope this helps, Matt -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On

This is FAQ 7.22. Lattice functions produce graphic objects, which are not displayed by default. If you print your graph, you should be fine. Also, take a look at the documentation for panel.xyplot. Using type = c("p", "r") should make things simpler. Regards, Matt Wiener -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at

I've had good luck with Rserve. http://stats.math.uni-augsburg.de/Rserve/ Hope this helps, Matt -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of fuad Sent: Tuesday, October 10, 2006 9:58 PM To: R-help at stat.math.ethz.ch Subject: [R] Accessing R from Java [Broadcast] Hello All, I am Fuad from Indonesia. I

Hi, all. I would like to use "pipe" to run a file through an awk program before scanning (to reduce the amount of data I'll be taking in). I would like to construct the awk program in R, and also to be able to set the awk variable FS, to accommodate different field separators in different files. My problem is that I keep getting the quotes escaped in the string that comes out, and