similar to: Text position in Traditional Graphics

In working through material on p.272 of MASS (4th ed.), I came across the following model formula: pet1.lm <- lm(Y ~ No/EP - 1, Petrol) I was at a loss to understand the use of "/" until I looked in "An Introduction [!] to R," where I found the explanation. My request is that more complete material on model formulae be lifted from "Introduction to R" (or

Dear List, Is there a possibility to change the font-face for a part of the title of a plot? For example I have the following... plot(nirs, type="l", xlab="Wellenl?nge [nm]", col="darkslategray", main = "Spektrum Deschampsia caespitosa") ...and I would like to change the part of the title-string "Deschampsia caespitosa" to italics? Is

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 need help with replacing NaN with zero (the value '0') in my dataset. The reason is that I can't get it to graph because of the NaN in the dataset. I have tried: data[is.nan(data)] <- 0 that others have suggested in the help archives but this does nothing so I am not sure what I am doing wrong. Thanks in advance for your help. [[alternative HTML version deleted]]

hello, today while trying to extract data from a list for subsequent analysis, i stumbled upon this funny behavior on my system: > x<-c(0.1,0.9) > 1-x[2] [1] 0.1 > x[1] [1] 0.1 > x[1]==1-x[2] [1] FALSE > x[1]>1-x[2] [1] TRUE > x<-c(0.3,0.7) > x[1] [1] 0.3 > x[2] [1] 0.7 > 1-x[2] [1] 0.3 > x[1]==1-x[2] [1] FALSE but: >

library(StreamMetabolism) day <- (structure(c(10.08, 10.08, 10.05, 10.03, 10, 9.98, 9.96, 9.95, 9.95, 9.96, 9.96, 9.98, 10.01, 10.05, 10.06, 10.09, 10.11, 10.11, 10.13, 10.13, 10.15, 10.15, 10.13, 10.14, 10.11, 10.13, 10.14, 10.13, 10.12, 10.13, 10.14, 10.16, 10.18, 10.19, 10.23, 10.27, 10.33, 10.37, 10.45, 10.57, 10.6, 10.66, 10.73, 10.77, 10.84, 10.86, 10.87, 10.94, 10.98, 11.01, 11.05,

Hi, I am thinking about IWLS vs ML estimation. When I use glm() for a 2-parameter distribution (e.g., Weibull), I can otain the MLE of scale parameter given shape parameter through IWLS. Because this scale parameter usually converges to the MLE. In this point, I am wondering: i) can you say that the direct MLE, which is obtained by maximizing a likelihood function, is equalvant to the indirect

Gurus, Can I rely on the rownames() function, when applied to a matrix, always returning either NULL or an object of type character? It seems that row names can be entered as integers, but as of now (R 2.4.1 on Windows) the function returns character vectors, not numbers (which is my desired result). I am using elements of the returned vector to index the matrix. e.g., nams <-

Hello R users -- If I have a dataframe such as the following, named "frame" with the columns intended to be named col1 through col6, > frame col1 col2 cmlo3 col4 col5 col6 [1,] 3 10 2 6 5 7 [2,] 6 8 4 10 7 1 [3,] 7 5 1 3 1 8 [4,] 10 6 5 4 9 2 and I want to correct or otherwise change the

How on Earth can I know what are the arguments of any of the functions of the tcl/tk package? I tried hard to find, using all search engines available, looking deep into keywords of R, python's tkinter and tcl/tk, but nowhere I found anything remotely similar to a help. For example, what are the possible arguments to tkgetOpenFile? I know that this works: library(tcltk) filename <-

I've been struggling to do the following: After a lengthy computation, I receive an output along the lines of the list below. This list has 41 values and is not the end of my computations. I have another computation to do on the list below, but in this final computation the list is supposed to be a vector. I've tried to assign the list below to a data frame and then extract it, but

Following the setup in Prof.Duncan Murdoch's page, I have successfully compiled the DLL for one Fortran 95 program using Gfortran and got 300 times speed boost. For the second set of fortran programs, However, I have this error message R CMD SHLIB -o jiangang kdtree2.f90 jian.f90 gang.f90 m2c -o jian.o jian.mod make: m2c: Command not found make: *** [jian.o] Error 127 Can anyone

Hi everyone, I have a matrix that has a combination of zeros and NAs. When I perform certain calculations on the matrix, the zeros generate "Inf" values. Is there a way to either convert the zeros in the matrix to NAs, or only perform the calculations if not zero (i.e. like using something similar to an !all(is.na() construct)? Thanks, rcoder -- View this message in context:

Dear R-users, I would like to write Greek letters followed by subscripts in a graph (on the X-axis and in a legend). I would appreciate any help. thank you, delphine courvoisier ************************************ Delphine Courvoisier Clinical Epidemiology Division University of Geneva Hospital +4122 37 29029

something like ... > x<-c(1,2,3,0,5,6,0) > is.na(x[x==0])<-T > x [1] 1 2 3 NA 5 6 NA ~~~~~~~~~~~~~~~~ Robert Kinley ~~~~~~~~~~~~~~~~ [[alternative HTML version deleted]]

Hi, I came across a case where there's a discrepancy between minimum and maximum values reported by 'summary' and the 'min' and 'max' functions: ---<---------------cut here---------------start-------------->--- R> str(tt) num [1:1397] 1952 1970 1976 1967 1946 ... R> summary(tt) Min. 1st Qu. Median Mean 3rd Qu. Max. 1920 1960 1970

Dear all, Does R have any functions for C/Fortran style text formatting when a number needs to be output right-justified in a fixed length field? say '%2d %3d %5.3f' or like python .rjust(n) and .zfill(n) I can do it paste(), but it is very clumsy. Thank you very much Stephen

Hi R Gurus! This is definitely off topic, but I thought I'd try: what is the way to put in url's into a Latex file, please? I know that you start with a \newcommand statement, with some kind of argument that will change, but I'm not sure how to set it up, please. thanks, Edna Bell

Dear R community, I have a scatterplot with multiple vertical ablines. I wish to color each interval between two ablines in a different color... Could you please indicate me how to do this efficiently? Thank you! Georg. ******************** Georg Ehret Johns Hopkins Baltimore [[alternative HTML version deleted]]

Hello, I am trying to convert the following command from SPLUS to R: graphsheet(pages = TRUE) Does anyone have an idea what is the equivalent in R? Thanks -- View this message in context: http://www.nabble.com/graphsheet-tp19026010p19026010.html Sent from the R help mailing list archive at Nabble.com.