similar to: Integration with LaTex and LyX

Hello there, any ideas on how to save all the objects on my workspace inside a list object? For example, say my workspace is as follows ls() [1] "x" "y" "z" and suppose I want to put these objects inside a list object, say object.list <- list() without having to explicitly write down their names as in object.list$x = x object.list$y = y object.list$z = z Is

Hi! I was wondering if there are any other functions for numerical integration, besides 'integrate' from the stats package, but which wouldn't require the integrand to be vectorized. Oh, and must be capable of integrating over (-inf,+inf). Thanks in advance, Eduardo Horta [[alternative HTML version deleted]]

Hello there I have a list, Y, and each component of that list is a real-valued function (that is, Y[[i]](u) returns a number). I was wishing to build the mean function and the first thing I thought of was Ybar<-function(u){ mean(Y[[1:n]](u)) } but obviously this doesn't work, since Y[[1:n]] is not allowed at all. Any elegant suggestions? I really would like to avoid something like

Hello! I have a csv file of intra-day financial data (5-min closing prices) that looks like this: (obs - the dates are formated as day/month/year, as is usual here in Brazil) Date;Time;Close 01/09/2009;10:00;56567 01/09/2009;10:05;56463 01/09/2009;10:10;56370 ##(goes on all day) 01/09/2009;16:45;55771 01/09/2009;16:50;55823 01/09/2009;16:55;55814 ##(jumps to the subsequent day)

Hello, this is probably a recurrent question, but I couldn't find any answers that didn't involve the expression "data frame"... so perhaps I'm looking for something new here. I wanted to find a code equivalent to > x=sqrt(1:10) > y=log(1:10) > plot(1:10, x, type="lines", col="darkgreen") > lines(1:10, y, col="red") to use with

Hello, say I have an object > x = list(first = 10, second = 20, third = "Yeah!") and want to remove the $second element of that list. My first try was, of course, > rm(x$second) which gave me the following error message > Error in rm(x$second) : ... must contain names or character strings Any ideas here, folks? Best regards, and Merry Christmas! Eduardo Horta

Hello Everyone,   Been learning R over the past several months. Read several books and have learned a great deal about data manipulation, statistical analysis, and graphics.   Now I want to learn how to make nice looking documents and about "literate programming." My understanding is that R users normally do this using LaTeX, MiKTeX, LyX, etc. in conjuction with Sweave. An alternative

Hello there I wish to get the "coordinates" of the minimum element of an array. For example, if the array were > H = array(c(8:5,1:4),dim=c(2,2,2)) > H , , 1 [,1] [,2] [1,] 8 6 [2,] 7 5 , , 2 [,1] [,2] [1,] 1 3 [2,] 2 4 then > min(H) [1] 1 and > max(H) [1] 8 Say "idx" were the function I'm looking for. Then, what

Hello, I'm willing to plot a sequence of densities on a 3d graph, something like ----------------------------------------------------------------- x <- sapply(1:10, function(i)rnorm(1000)) f <- sapply(1:10, function(i)density(x[,i], from=-5,to=5)$y) grid <- density(x[,1], from=-5,to=5)$x win.graph() persp(grid1, 1:10, f,theta=-50, phi=30, d=2)

Hello, I was trying to define a set of functions inside a loop, with the loop index working as a parameter for each function. Below I post a simpler example, as to illustrate what I was intending: f<-list() for (i in 1:10){ f[[i]]<-function(t){ f[[i]]<-t^2+i } } rm(i) With that, I was expecting that f[[1]] would be a function defined by t^2+1, f[[2]] by t^2+2 and so on.

Hi there, yet on the topic of greek letters and pdf plotting: when I run the following code pdf(file="temp.pdf") mu=seq(from=-pi, to=pi, length=100) plot(mu, sin(mu^2), type="l", xlab=expression(mu%in%(list(-pi,pi))), ylab=expression(sin(mu^2)), main=expression((list(mu,sin(mu^2))))) dev.off() I get a "proportional to" symbol in place of a

Hello, I was trying to build some functions which I would like to integrate over an interval using the function 'integrate' from the 'stats' package. As an example, please consider the function h(u)=sin(pi*u) + sqrt(2)*sin(pi*2*u) + sqrt(3)*sin(pi*3*u) + 2*sin(pi*4*u) Two alternative ways to 'build' this function are as in f and g below: coeff<-sqrt(1:4)

Is there a way to achieve lbl=c("a", "b", "c", "d") par(mfrow=c(2,2), ann=FALSE) for (t in 1:4){ plot(seq(from=1,to=2*pi,length=100), sin(t*seq(from=1,to=2*pi,length=100)), type="l") title(main=paste("(", lbl[t], ")", sep="")) } without having to use an object like 'lbl'? More generally: is it possible

I often use Lyx/Sweave and I typically write in english. Today I had to write a document in Italian and, as many of you know, many italian popular words use ?, ?, ?. ?, etc. I discovered that if I type in Italian (that is there is at least one letter with accent) with the Sweave module selected lye is not able to correctly compile the document. I tried to change the input encoding, but it

Hello, I want to save a pdf plot using Cairo, but the canvas of the saved file seems too large when compared to the actual plotted area. Is there a way to control the relation between the canvas size and the size of actual plotting area? Thanks in advance, and best regards, Eduardo Horta [[alternative HTML version deleted]]

Hello, I've googled for a while and couldn't find anything on this topic: say I have a matrix A and want to build matrices B1, B2,... using blocks from A (or equivalently an array B with B[,,i] being a block from A), and that I must sum the B[,,i]'s. I've come up with this rather non-elegant code: > n = 6 > p = 3 > > A <- matrix(1:(n^2), n, n, byrow=TRUE) >

Does anyone know what file type sink is outputting to? I've been reverting output from R using sink and wanted to add it to my Appendix in LaTex (Lyx) using "Verbatiminput". However, I get an error message as LaTex is expecting an ASCII file. Can I set sink somehow to ASCII or is there another option? Thanks Joanne

Hello, Can anyone provide or point me to a good setup for the listings latex package that would produce nice R-syntax highlighting? I am using an example I found in internet for setting up listings like this: \lstset{ language=R, basicstyle=\scriptsize\ttfamily, commentstyle=\ttfamily\color{gray}, numbers=left, numberstyle=\ttfamily\color{red}\footnotesize, stepnumber=1, numbersep=5pt,

Buenas, foreros y foreras; No sé si esto es pregunta para hacer acá, lo preguntaría en stackoverfow, si no fuese que el inglés me intimida. Quiero usar el packete `bookdown` para escribir un libro, pero resulta que la salida tiene que ser PDF y no lo consigo. Siguiendo las instrucciones de acá: https://bookdown.org/yihui/bookdown/get-started.html llego a compilar sin ningún problema en formato

>>>>> On Mon, 25 Jul 2005 14:12:41 +0200, >>>>> Gorjanc Gregor (GG) wrote: > Hello R-users! > I have tried to use Sweave within LyX* and found two ways to accomplish > this. I have attached LyX source file for both ways as well as generated > PDFs. I have copied Gregor's files at http://www.ci.tuwien.ac.at/~leisch/Sweave/LyX for those who