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Dear R-help members, I have several large data sets from certain simulations I did and now I want to plot the results nicely. I don't know anything about the size of the x and y values in advance. Plotting these values is not a problem. However, I want to add errorbars (errbar in the Hmisc package). 1) For this I'm factoring the data (xdata00 varies from 0 to max(xdata00)) xfactor00 =

Dear R-members, Suppose I have a vector with the following strings: V = c("Welfare_Group_1024", "Welfare_Group_1536", "Welfare_Group_160") I want to 'automatically generate a nice y-axis label for this data. A good candidate is something close to "Welfare Group". Is there an easy way to compute something close to the greatest common

Dear all, I've found this nice code fragment on the web (from Jan T. Kim if I'm correct): hitReturn <- function(msg) { invisible(readline(sprintf("%s -- hit return", msg))); } But it does not seem to work in non-interactive mode ( I mean, when I start a script like this: R --vanilla < script.R ) It simply continues, I guess the stdin is not connected? Does somebody

Dear R users, I am using function bandplot from the gplots package. To my understanding (viewing the source of bandplot) it calls function plot (add = FALSE) with the same parameters (except for a few removed). I would like to give extra parameters 'xlab' and 'ylab' to function bandplot, but, as can be seen below, that raises warnings (and the labels do not show up at the end).

Hi Does anyone know if there is a function similar to as.numeric that will extract a numeric prefix from a string as in the following examples? x<-c(3, "abc", 5.67, "2.4a", "6a", "6b", "2.4.a", 3, "4.2a") df.x<-data.frame(Code=x) x.str<-levels(df.x[,1]) # required function result 2.40 3.00 4.20 5.67 6.00 NA Thanks Mike White

Dear R-list users, I'm new to principal components and factor analysis. I thought this method can be very useful for me to find relationships between several variables (which I know there is, only don't know which variables exactly and what kind of relation), so as a structure detection method. Now, I'm experimenting with the function prcomp from the mva package. In my source code

Hi R-users, I have a collection of dataframes and know how to build a string that refers to it, in this example, name_infra_alg_inc. Then, I have a character string yval, which the user can select from a drop down list. It contains the column names of the dataframes. assign(paste(name_infra_alg_inc, "ci", sep="."), ci(get(name_infra_alg_inc)[[yval]], confidence=0.95)) My

Hi R-list members, Could somebody explain to me the meaning of the '.' in the formula SumTL~. below? I could not find it in the help pages. I'm guessing it is substituted by v1+v2+v3+.. for all independent variables vi. Furthermore, I would like to add interaction effects to the model, is this also possible with the '.'? > library(leaps) >

This graph -> http://www.math.hope.edu/~tanis/dallas/images/disth36.gif is an example I found at http://www.math.hope.edu/~tanis/dallas/disth1.html created by Maple. Does anybody know how to create something similar in R? I have a feeling it could be possible using scatterplot3d (perhaps with type=h, the fourth example in help('scatterplot3d')?), but I cannot figure it out. Thanks in