Re: [R] Error in colMeans ... what's wrong with my data?

Prof Brian Ripley [EMAIL PROTECTED] writes: On Fri, 1 Apr 2005, Hartmut Weinrebe wrote: [snip] struktur - read.delim(struktur.csv, header=TRUE, sep = ;) colMeans(struktur) And the resulting error: Error in colMeans(x, n, prod(dn), na.rm) : `x' must be numeric Can

[R] is a very big graphics-device

Hello, i am searching now the R-Documentation many hours, but i cannot find a solution to my problem. I hope, i can solve my issue with R. i have data-tables, 15*40 data-tables i want to visualise this. this example-code i copied makes a 3x3-grid: x - 0:12 y - sin(pi/5 * x) op - par(mfrow =

[R] factor to numeric in data.frame

Dear All, Assume I have a data.frame that contains also factors and I would like to get another data.frame containing the factors as numeric vectors, to apply functions like sapply(..., median) on them. I read the warning concerning as.numeric or unclass, but in my case this makes sense, because

RE: [R] is a very big graphics-device

On 02-Apr-05 Markus Hummel (WEB.DE) wrote: Hello, i am searching now the R-Documentation many hours, but i cannot find a solution to my problem. I hope, i can solve my issue with R. i have data-tables, 15*40 data-tables i want to visualise this. [...] i want it for 15x40 grid in a

Re: [R] factor to numeric in data.frame

Try this: data.matrix(df.f12) On Apr 2, 2005 6:01 AM, Heinz Tuechler [EMAIL PROTECTED] wrote: Dear All, Assume I have a data.frame that contains also factors and I would like to get another data.frame containing the factors as numeric vectors, to apply functions like sapply(..., median) on

Re: [R] is a very big graphics-device

I typically do this with a large PDF [pdf(width=33, height=24), for example]. Most of the PDF viewers allow zooming in and out as well as grabbing the page to move it around. Sean - Original Message - From: Ted Harding [EMAIL PROTECTED] To: Markus Hummel (WEB.DE) [EMAIL PROTECTED] Cc:

RE: [R] using GAM to assess the linearity in logistic regression

Dear ronggui, There are several approaches you can take, one of which is to fit a GAM and simply look to see whether the relationships appear linear on the logit scale. As well, you could compare the fit of the GAM with semiparametric models in which each smooth term in turn is replaced by a

Re: [R] factor to numeric in data.frame

On Sat, 2 Apr 2005, Heinz Tuechler wrote: Dear All, Assume I have a data.frame that contains also factors and I would like to get another data.frame containing the factors as numeric vectors, to apply functions like sapply(..., median) on them. I read the warning concerning as.numeric or unclass,

Re: [R] factor to numeric in data.frame

At 07:15 02.04.2005 -0500, Gabor Grothendieck wrote: Try this: data.matrix(df.f12) Perfect! This is exactly what I needed. Many thanks, Heinz Tüchler On Apr 2, 2005 6:01 AM, Heinz Tuechler [EMAIL PROTECTED] wrote: Dear All, Assume I have a data.frame that contains also factors and I would

RE: [R] is a very big graphics-device

On 02-Apr-05 Martin Maechler wrote: Hi Ted, in my Redhat / GNOME setup, I can grab windows using Alt + left mouse button anywhere, not just at the top bar to drag them around. I'm not entirely sure if this Alt-key + Mouse is standard, but I'm quite sure it's the default in other (Unixy)

Re: [R] factor to numeric in data.frame

At 14:26 02.04.2005 +0100, Prof Brian Ripley wrote: On Sat, 2 Apr 2005, Heinz Tuechler wrote: Dear All, Assume I have a data.frame that contains also factors and I would like to get another data.frame containing the factors as numeric vectors, to apply functions like sapply(..., median) on

[R] Help with brain surgery

Need help with brain surgery? I should begin by reading the second edition of my new Wiley text, Common Errors in Brain Surgery (and How to Avoid Them). P.S. Don't worry too much about preventive measures or even planning the details of the surgery. Any competent surgeon can help you

[R] Amount of memory under different OS

Hi, I have a problem: I need to perform a very tough analysis, so I would like to buy a new computer with about 16 GB of RAM. Is it possible to use all this memory under Windows or have I to install other OS? Thanks, Marco

RE: [R] Amount of memory under different OS

Your best bet currently is probably some flavor of Linux for x86-64 (assuming you are buying a box with AMD64 or EM64T chip). Personally I've had good experience with SUSE SLES8/9 and Fedora FC3. Even though 64-bit Windows might be out `soon' (http://www.theinquirer.net/?article=22246), I

[R] RMySQL question

Dear List, I have this little problem: I work with adiacency matrix like: datame you me 0 1 you 1 0 I store those matrix in a mysql database actually I use RMySQL with: res-dbSendQuery(connection, SELECT * FROM table) myDataFrame-fetch(res) to retrive the table, and I have

[R] need hints on basic character string functions

Hello, for now, I need to transform A to a, and need to know length of ABC, etc. Please show me a starting point for character string functions. Thank you. __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE

RE: [R] need hints on basic character string functions

See ?tolower and ?nchar. Andy From: Terry Mu Hello, for now, I need to transform A to a, and need to know length of ABC, etc. Please show me a starting point for character string functions. Thank you. __ R-help@stat.math.ethz.ch

Re: [R] need hints on basic character string functions

Liaw, Andy [EMAIL PROTECTED] writes: See ?tolower and ?nchar. and help.search(keyword=character) for more stuff. -p Andy From: Terry Mu Hello, for now, I need to transform A to a, and need to know length of ABC, etc. Please show me a starting point for

[R] wrong signs using MNP.

Hi, I recently found the MNP package. Out of curiosity, I tried to reproduce results from Greene (Econometric Analysis, fourth edition) on page 874. The signs of the estimates are all opposite those of Greene's table. Might anyone be able to tell me what I am doing wrong? I have attached the

[R] is there a function like %in% for characters?

like: a %in% abcd TRUE Thanks. __ 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] is there a function like %in% for characters?

I suppose here's one way: hasChar - function(x, y) { length(grep(x, y)) 0 } hasChar(a, abcd) [1] TRUE hasChar(e, abcd) [1] FALSE Andy From: Terry Mu like: a %in% abcd TRUE Thanks. __ R-help@stat.math.ethz.ch mailing list

Re: [R] is there a function like %in% for characters?

thx, that's perfect. I thought of grep(), it also can do this. I wonder if there is a document or book that explains things categorically so it's easy to look up a function. On Apr 2, 2005 10:54 PM, Liaw, Andy [EMAIL PROTECTED] wrote: I suppose here's one way: hasChar - function(x, y) {

[R] Re: is there a function like %in% for characters?

Or, using the %foo%-style functions: %charin% - function(x, y) regexpr(x, y) != -1 a %charin% asdf [1] TRUE a %charin% bsdf [1] FALSE Cheers, Rich On Sat, 2 Apr 2005 22:54:35 -0500, Liaw, Andy [EMAIL PROTECTED] wrote: I suppose here's one way: hasChar - function(x, y) { length(grep(x,

[R] how to draw a 45 degree line on qqnorm() plot?

# I can not draw a 45 degree line on a qqnorm() plot, jj - sample(c(1:100), 10) qqnorm(jj) abline() don't work. Thank you. __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide!

RE: [R] how to draw a 45 degree line on qqnorm() plot?

You didn't try very hard. Try this, look at it and think about it: jj - scale(sample(1:100, 10)) qqnorm(jj) abline(0, 1) Rather than abline, however, most people, however, would use qqline(jj) in which case you don't need the scaling. V. -Original Message- From: [EMAIL