similar to: plotmath: how to create a vector of expressions?

Dear expeRts, I would like to create a scatter plot matrix with splom(). The lower panel should contain some additional information about the samples shown in the upper panel plot, see the splom() call below. Now two questions came up: (1) The lower panels show "tau" and "alpha" on top of each other. How can I plot *three* expressions on top of each other? I tried several

Dear expeRts, I would like to create a plotmath-label of the form X_1^\prime. Here is how to *not* do it [not nicely aligned symbols]: plot(0,0,main=expression(italic(X*minute[1]))) plot(0,0,main=expression(italic(X[1]*minute))) plot(0,0,main=expression(italic(X)[1]*minute)) Any suggestions? Cheers, Marius

Dear all, How can I get a bold "1000" in the title? I would like to use a variable (as opposed to putting in "1000" directly). library(lattice) N <- 1000 xyplot(0~0, xlab.top=list(label=as.expression(bquote(bold("foo" ~ .(N) ~ "bar"))), font=2, cex=1.2)) ## => "font=2" is ignored (of course) Cheers, Marius

Dear all, I have a vector of expressions and would like to "paste" some string to it before using it in a plot: vars <- vector("expression", 2) vars[1] <- expression(alpha) vars[2] <- expression(beta) plot(0, 0, main=substitute(bold("Foo" ~~ VAR), list(VAR=vars[2]) )) Although I tried hard, I just can't figure out how to solve this. The title should be

Dear expeRts, shouldn't this... x <- 1:10 myplot <- xyplot(x~x,col="red") trellis.device(postscript,color=FALSE,file="plot.ps") print(myplot) dev.off() ... give a black/white plot? Cheers, Marius

Dear expeRts, I would like to use expression() for creating labels in a splom, as shown in the first minimal example below. Is there any way I can simplify having to write "expression(italic(...))" several times? The second example is what I tried so far, but I can't manage to get italic() to work. Moreover, it still seems bulky... Cheers, Marius ## minimal example (working but

Hello everyone, I want to define a function that receives the name of two variables (may include Greek letters and subscripts) and uses them into the title of a plot. My best attempt is the following: myplot <- function(var1, var2) { v=paste(var1,"==1 & ",var2,"==2"); plot(1:10, main=parse(,,v)) } But when I call it with something like myplot("Q[i]",

Dear expeRts, I am a new user of rgl, below is my first trial to plot a simple function in 3d. I managed to put the axes in the right locations, but: (1) The xlab, ylab, and zlab arguments are ignored; how can I put in axes labels? (2) Since I removed the axes in persp3d() the viewport is too small; is it possible to keep the size of the viewport? (3) The box is not correctly drawn, there

Dear expeRts, I it possible to have serif labels in the following plot? x <- 1:10 y <- x plot(x, y, type="b", xlab=expression(x[1]), ylab=expression(x[2])) I know that one can use pdf(, family="serif"), but then also the axis tick marks are printed in serif font. Apart from the fact that it may not look nice, I'm just interested if one can have serif axis labels

Dear expeRts, How can I get plotmath-labels in the bwplot below? As you can see, I couldn't manage to pass the expressions through the dimnames argument. Cheers, Marius library(lattice) ## data dim <- c(100, 6, 2, 3) dimnames <- list(n=paste("n=", seq_len(100), sep=""), groups=paste("group=", seq_len(6), sep=""),

Dear expeRts, How can I vertically adjust an axis tick label so that it is nicely aligned with the other labels? library(lattice) xyplot(0~0, xlim=c(0,3), scales=list(x=list(at=c(1,1.1), labels=c(expression(hat(theta)[italic(n)]),expression(theta))))) ## aim: move the leftmost expression up so that theta is nicely aligned with the second theta. Cheers, Marius

Dear all, Below is some code where I try to get plotmath symbols in an rgl plot. Duncan Murdoch kindly suggested to use a "sprite" for this. As you can see, on can get it to work, but my knowledge about grid and rgl is too limited to perfectly solve the problem. 1) As you can see (please rotate the plot a little bit so that (0,0,0) is "in front"), the quality of the .png

Hi, Is this expected behavior (R-3.6.0)? dat <- cbind(x = 1:10, y = 10:1) ylab <- substitute(X[t], list(t = 2)) plot(dat, ylab = ylab) # works (correctly displays ylab) boxplot(dat, ylab = ylab) # fails boxplot(dat, ylab = as.expression(ylab)) # works Thanks & cheers, M

Dear expeRts, I would like to call a function f from a function g with or without an argument. I use missing() to check if the argument is given. If it is not given, can I set it to anything such that the following function call (to f) behaves as if the argument isn't given? It's probably best described by a minimal example (see below). The reason why I want to do this is, that I do

Hi, how can I create an array of lists of three components? This approach does not work: n1 <- 2 n2 <- 4 n3 <- 5 res <- array(rep(vector("list",3), n1*n2*n3), dim = c(n1,n2,n3)) res[1,1,1] # is not a list with three components... The goal is that res[1,1,1] is a list with three components. Also, appending the components didn't work. For example, I tried: component

Dear (T)eXpeRts, I try to create a LaTeX table from an R matrix for the first time. I am not sure what the "best" approach is, I just read about latex() from Hmisc (toLatex() didn't work). Consider the following minimal example: library(Hmisc) mat <- matrix(c(1,NA,3,100,10000,4), ncol = 3, byrow = TRUE) latex(mat, file = "", booktabs = TRUE, numeric.dollar = FALSE,

Dear expeRts, I am not sure if I found a bug... I would like to create a function that itself creates a lattice plot without colors. Following http://www.mail-archive.com/r-help at r-project.org/msg64699.html I use trellis.device() to set the colors to FALSE. Whenever I call the minimal example below *with* trellis.device(), Quartz opens a window (I am working on a MAC), which it shouldn't,

Dear expeRts, I somehow don't see why the following does not work: integrand <- function(x, vec, mat, val) 1 # dummy return value A <- matrix(runif(16), ncol = 4) u <- c(0.4, 0.1, 0.2, 0.3) integrand(0.3, u, A, 4) integrate(integrand, lower = 0, upper = 1, vec = u, mat = A, val = 4) I would like to integrate a function ("integrand") which gets an "x" value (the

Happy New Year to all R users! I have two short questions concerning a xyplot with a color key: 1) How do I properly place (align) the color key beside the xyplot? As you can see from the code listed below, the placement of the color key is not correct. I would like the upper and lower end point of the color key to be perfectly aligned with the upper and lower line of the xyplot. Adjusting

Hi, This is most likely only a minor technicality, but I saw the following: On page 6 of the 'parallel' vignette (http://stat.ethz.ch/R-manual/R-devel/library/parallel/doc/parallel.pdf), the random-number generator "L'Ecuyer-CMRG" is said to have seed "(x_n, x_{n-1}, x_{n-2}, y_n, y_{n-1}, y_{n-2})". However, in L'Ecuyer et al. (2002), the seed is given with