similar to: ltext, plotmath, and substitute

hi all - i've seen versions of this question before, but none seem to get directly at my solving my (probably very simple) issue: i simply want to annotate the tick marks on an axis with (superscripted) 10^x notation, and tried this: axis(1, at = axTicks(1), as.expression(substitute(10^foo, list(foo = axTicks(1)))) thinking the as.expression/substitute would create the appropriate

I hope to use the plotmath facility to print titles that mix math and values of R variables. The help for "plotmath" has an example, which after repeated reading, I find baffling. Likewise, I have read the help file for "substitute" (wqhich seems to be needed) without ever understanding what it does, other than being used in some magic incantations. I would like to do

I'm using R-2.6.2 on Fedora Linux 9. I've been experimenting with plotmath. I wish it were easier to combine expressions in plotmath with values from the R program itself. There are two parameters in the following example, the mean "mymean" and standard deviation "mystd". I am able to use bquote to write elements into the graph title like mu = mymean and R will

Greetings: I would like comments on this example and after fixing it up, I need help from someone who has access to insert this in R's help page for plotmath. I uploaded a drawing http://pj.freefaculty.org/R/Normal-2009.pdf that is created by the following code http://pj.freefaculty.org/R/Normal1_2009_plotmathExample.R This will be a good addition to the plotmath help page/example.

Folks: delta <- 1:5 I would like to put 5 separate lines of text of the form "10 %+-% delta[i]" into a lattice key legend, where ""%+-%" is the plotmath plus/minus symbol and delta[i] is the ith value of delta. The construct: lapply(delta,function(d)bquote(10%+-%.(d))) appears to produce a list of expressions of the correct form, and, indeed, if I assign the above

R 4.2.3 OS X Colleagues This should be easy -- but not for me. I want to plot text similar to this: N ? XX: YY where XX can be either 1 or 50 and YY is an integer I envision that there would be two solutions: UNICODE: If I can generate "?" via unicode, the problem is solved: mtext(side=3, paste0("N ", UNICODE, " ", XX, ": ", YY)) PLOTMATH:

I've been testing plotmath. But I'm getting some funny output one one computer. The problem is that characters are 'jumbled' and overstrike when symbols are introduced. Sample code: mu <- 440.0 sigma <- 12.5 myx <- seq( mu - 4*sigma, mu+ 4*sigma, length.out=500) myDensity <- dnorm(myx,mean=mu,sd=sigma) # Here's one way to retrieve the values of mu and sigma and

Colleagues, I am encountering difficulty adding formatted text to a graphic. Specifically, I want to add a superscript in the middle of a text string but I would like to format the text string on the fly. The commands: plot(1,1) ARG <- bquote('TEXT'^'\u00ae') mtext(ARG, line=-2, side=1) yield the desired output. However, my goal is to paste together a string, then pass

I'm trying to combine multi-line text and math annotations on a plot and am not having much luck. I looked at various suggestions in the archives, but I cannot coerce any of them to do what I want. I'm beginning (finally?!) to think that there is an entirely better approach than the one I have tried. The essential problem is that line breaks (\n) don't seem to behave the way I

## I would like help in using variable values in plotmath expressions ## in lattice x <- 1:10 y <- 1:10 pval <- .95 plot(y ~ x, ## works as I want in base graphics main=substitute(list(alpha * " = " * group("",list(p),"")), list(p=pval))) plot(y ~ x, ## doesn't work as intended: "pval" is displayed main=substitute(list(alpha *

Here's another example of my plotmath whipping boy, the Normal distribution. A colleague asks for a Normal plotted above a series of axes that represent various other distributions (T, etc). I want to use vectors of equations in plotmath to do this, but have run into trouble. Now I've isolated the problem down to a relatively small piece of working example code (below). If you would

Recent questions about using plotmath have renewed my interest in this question I want to have expressions take values of variables from the environment. I am able to use expressions, and I am able to use paste to put text and values of variables into plots. But the two things just won't work together. Here is some example code that shows what I mean. plot(NA,xlim=c(0,100),ylim=c(0,100))

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

A student entered some data with text characters like epsilon and alpha. On her Windows system, the Greek letters did not display properly in a plot. There were some ordinary ASCII instead. I asked her to send me the code so I could test. For me, the plot looks ok on the screen. Format1 <- c(320,500,700,1000,500,320,700,500,320) Format2 <- c(800,1000,1150,1400,1500,1650,1800,2300,2500)

In trying to create a plotmath expression for plot labeling, such as R = 6, beta = 15 where I want beta to be the Greek beta and, possibly, R in italics (like one would get in an explicit expression. The reason for this is that I want to write a string builder function that takes vectors of variable names and their values and return a plotmath expression for labeling a plot. One approach I

If I have two variables set, one of which holds an expression, for example: > label <- 'Temperature' > unit <- expression(paste(degree,'C')) how can I join them together for use in mtext (or equivalent)? The following is conceptually what I want to do, but will obviously not work: > plot(0:1) > mtext(paste(label,unit)) Preferably, I would like this to work

Hi, I want to put text on a plot containing something like: a = b^2 = <squared numeric value of b> using bquote. Example: mu = 5 plot(1:10,1:10) text(2,8, bquote(delta == mu^2)) # This works text(2.5,8, bquote(phantom(0) == .(mu^2))) # but is unpredictable text(2,8, bquote(delta == mu^2 == .(mu^2))) # This doesn't work The last text function returns the error:

I'm trying to obtain a set of regression lines obtained for different values of a factor using lattice. I would like to add a string to each panel showing the R^2 value of the respective line, but I'm having difficulties positioning the text (namely on which coordinates to give to the "ltext" function). Here is what I'm using (I've used ?? for the things I would like

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]",

R listers: I have been foiled by plotmath! (in R 2.01,Windows 2000) The task: Plot a normal density and label the ticks as mu - 3 sigma, mu - 2 sigma, ...., mu + 3 sigma, where the mu's and sigmas appear as Greek symbols, of course. The following code does this: x<-seq(-3,to=3,by=.01) y<-dnorm(x) plot(x,y,type='h',col='lightblue',axes=FALSE)