similar to: maybe a bug in the system.time() function? (PR#10696)

Hello all, I want to define a vector like w[k+1]=w[k]*a/(b+k) for k=1,...,N-1 without use loop. Is it posible to do in R? Regards khazaei

Hi, I have two different sets of data from two different populations. I want to plot these samples (for example: Line graph) by just one graph. could you please help me? Thanks Khazaei

Hi, I have some vector v1,v2,...,vk, with different lengths. I want to consider these vectors as a matrix with k rows. Can you please guide me how I can do it? Regards khazaei

Hi, all How can generate a sample from truncated inverse gamma distribution in R? thanks

-------------------------------------------------------------------------- Hello all My computer is MacBook and I want to draw a plot in R, for example for x <- c(1,3,6,9,12) y <- c(1.5,2,7,8,15) I use this command plot(x,y). but it dosn't work. Could you please help me? thank you khazaei

Hi, I used the apply()function to compute the maximum of the each row of the matrix, but in my application sometime the matrix has just one row, and the apply() dosen't work. Could you please give me some hints? thank you khazaei

Hi, I have a matrix with m rows and n column and a vector with n elements. I want to divid each rows of the matrix by vector direcly. could you please hint me? Thank you khazaei

Hi, At each iteration in my program,I need to generate tree vectors,X1,X2,X3, from exponential distribution with parameters a1,a2,a3. Can you help me please how can I do it such that it take a little time? thank you khazaei

Hi, I need your help!! I imported a big coloumn vector from a txt file but it results as mode :"list" I want to change it in numeric otherwise I can't do my analysis. This is what i get: mode (data) <- "double" Error in eval(expr, envir, enclos) : (list) object cannot be coerced to type 'double' > Thanks a lot!!! Alessandra -- View this message in

About six months ago there was a reference to a site (in french) that did a spectacular job of demonstrating R's graphical capabilities. My bookmarks were recently wiped and I cannot find this site despite my best googling. Anyone have the address which I have done a miserable job describing? Thanks. Michaell

Hello all how can sample from f(x)~x^(a-1)*ind(0,min(b,-log(u)) in R? where a and b is positive constand and 0<u<1 thanks khazaei

Hi, I am runing R on my mac and I get this error: R(206,0xa01ad720) malloc: *** mmap(size=4000002048) failed (error code=12) *** error: can't allocate region *** set a breakpoint in malloc_error_break to debug R(206,0xa01ad720) malloc: *** mmap(size=4000002048) failed (error code=12) *** error: can't allocate region *** set a breakpoint in malloc_error_break to debug Is there any an

Hello wizaRds ! I am looking for a french and recent version of "An introduction to R". Does anybody know where i could find on of these. Thanks. -- Romain Fran??ois 25, avenue Guy Moquet 94 400 Vitry sur seine FRANCE _______________________ _______________________ francoisromain at free.fr 01 46 80 65 60 06 18 39 14 69

Hallo, I have a vector of several iterations and I have to remove /filter out all the values < than 10, how can I do this? Thanks a lot Alessandra -- View this message in context: http://www.nabble.com/removing-value-from-a-vector-tp24250608p24250608.html Sent from the R help mailing list archive at Nabble.com.

Hello list I'M new I need help about print to file How i can Print more table in a file (in append) using xtable and print functions? Tanks Alessandra

Hi I must to estimate the* performance. I am try to understand which can be the eventual bottlenecks. Have you some suggestion? Can you to signal to me some problems? Thanks Alessandra

Hi, I need your help. I have a vector of numbers reflecting the switch in the perception of a figure. For a certain period I have positive numbers (which reflect the perception A) then the perception changes and I have negative numbers (perception B), and so on for 40000 iterations. I need to take the rate of this switch for my analysis. Namely, I need a new vector with numbers which reflect how

Hello, I have a linux box with the following S/W versions: CentOS release 5.2 (Final) Linux ns.hostname.ro 2.6.18-92.1.13.el5 #1 SMP Wed Sep 24 19:32:05 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux Version 3.0.28-1.el5_2.1 My server has 2 IP interfaces, eth0: with the public ip address and br0: for the private subnet. Br0 being a bridge ip interface between eth1 and tap0 ( for openvpn ). Now my

Hello, I have another (possibly easy) question: How to specify the size of a plot? When I draw a plot, I can freely change the size of the window, which is nice for single plots to find the best height/width ratio, but as I need a lot of plots in my work, I want to look them all the same, so I need to specify the size in advance. Thanks for help, Christoph

Dear Rdevelopers The background for this email is that I was helping a PhD student to improve the speed of her R code. I suggested to replace calls like t(AA)%*% BB by crossprod(AA,BB) since I expected this to be faster. The surprising result to me was that this change actually made her code slower. > ## Examples : > > AA <- matrix(rnorm(3000*1000),3000,1000) > BB <-