similar to: Sampling

Sorry, I hit the send botton by accident. Here is my code so far: dat<-read.csv('myfile.csv', na.strings="") dat[is.na(dat]<-'N' But it doesn't replace the <NA> for the letter 'N'. I am using R v 2/7/0, running it under Windows XP. Thank you, Judith

Sorry, I just realized I didn't type in the correct names of the variables I am working with, this is how it should be: plot(1,1,type="n") for (i in summ$tx) { points(summ$timep[summ$tx==i],summ$mn[summ$tx==i]) lines(summ$timep[summ$tx==i],summ$mn[summ$tx==i]) } Thank you, Judith ____________________________________________________________________________________

Hi, I have a vector in a data frame that looks something like this: day<-c('Day -1','Day 6','Day 10') This vector specifies the order in which several panel will appear in a lattice plots. But the order in which such plots will appear will be the following: Day -1, Day 10, Day 6. Which makes sense, but I cannot name the Days like this: Day -01,Day 10, Day 06,

Hello dear R-helpers, I haven't been able to figure out of find a solution in the R-help archives about how to delete all the characters contained in groups of parenthesis. I have a vector that looks more or less like this: myvector<-c("something (80 km/h, sd) & more (6 kg/L,sd)", "somethingelse (48 m/s, sd) & moretoo (50g/L , sd)") I want to extract all

Dear R experts, I am sorry for sending this email again. I would imagine yesterday and maybe today, have been very busy days with the release of R v 2.7.0. I join all the R users who are very gratful for your contant work and efforts, specially knowing that you are doing this for the sake of science, without gettig any compensation for that. Having written that, I decided to send the

Hi Deepayan and everyone, I need to add a common legend to a group of latice graphs, I have tried different ways using viewport and grid.draw without success. Here is what I have: plot.new() library(grid) library('IDPmisc') print(plot1, split=c(1,1,2,4), more=TRUE) print(plot4, split=c(2,1,2,4), more=TRUE) print(plot2, split=c(1,2,2,4), more=TRUE) print(plot5, split=c(2,2,2,4),

Hello dead R-experts, I work on x86_64-suse-linux and I am using R 2.7.1. I created several scripts that will be used by several people that are not familiar with R. I would like to create a GUI to call the scripts that the users would choose to run, also, the GUI should allow them to choose the directories where their raw data resides, the scripts will be fed with such raw data. My

Hi, I haven't been able to figure out how to remove a vertical line that appears when I open an r file. How can I do this? Thank you, Judith ____________________________________________________________________________________ Looking for a deal? Find great prices on flights and hotels with Yahoo! FareChase.

Hello, I have an expression that I want to substitute for something else. myvector<-c("ajkhfkiuwe","Variable(kg/min)") if I use the following code to extract "variable(kg/min)" and substitute it for "va" gsub(myvector[grep("var", myvector, ignore=T)], "va", myvector) grep identifies the element of the vector that matches my

Dear R-experts, I need to replace the values of a vector(tx) with a word ('Vehicle') when the value of the vector contains the word 'vehicle'. Sometimes, the value could be 'MCT vehicle', or 'control-vehicle', etc. I tried gsub like this treatment<-gsub('vehicle','Vehicle', tx, ignore.case=T) But then I end up with values like 'MCT

Dear experts, I am trying to understand why is it that when I paste (into the R console) the following code to select an option from a list: require(tcltk) tt<-tktoplevel() tl<-tklistbox(tt,height=ntx,selectmode="single",background="white") tkgrid(tklabel(tt,text="Select the legend of" )) tkgrid(tl) treatments<<-levels.tx for(i in

Dear R-experts, I am running a script that has the following structure: windows(height=5.5,width=8) dat<-read.csv("myfile.csv") names(dat)<-c('a','b','c','d') dat<-dat[,1:4] xyplot(dat$a~dat$b) Then I usually save the plot as a PDF (from the menu in the R console). I can save the PDF twice in a row; but at the third time, right when I

Hi, I have a csv file with empty values, when I apply the different functions (mean, std, etc.) I create a new data frame, the empty values generate Inf and -Inf values. How can I remove those Inf and -Inf values from the new data frame? I already specified na.rm in the mean and std functions, but the values are still there. Thank you, Judith

Hi, I need to run a script under the variable (that comes from a csv file) that is assigned to another variable. This is very a simplified version of what I want to do: data<-read.csv('name.csv') names(data)<-("VA","VB","VC") v<-VA mn(v) Thank you in advance, Judith

Hi there, I found one reference to add a reactangle behind a plot using plot(...,add=T), I tried this but didn't obtain the desired result. If a I have the following code: plot(x,y) rect(xleft, ybottom, xright,ytop,col='green) The rectangle appear on top of the plot. Any help will be greatly appreciated, Judith

Dear experts, I am asking for help with a question regarding to stratified bootstrap. My dataset is a longitudinal dataset (3 measurements per person at year 1, 4 and 7) composed of multiple clinic centers and multiple participants within each clinic. It has missing values. I want to do a bootstrap to find the standard errors and confidence intervals for my variance components. My model is a

Hi, I have been trying many of the suggested options to place a legend outside plotting area, including something like this: par(xpd=T, oma=par()$oma+c(4.5,0,1.5,0),mar=par()$mar+c(1,0,1,0) But the aspect of the four plots gets compromised when I change the margin settings. I cannot use mtext because I need to use colors for the text. I tried layout, but wouldn't let me include

Hello R-users,    I have a data frame whose names of columns I don't know a priori, but the user of my code will know them. The user is supposed to save the name of the column that will need some reordering of the levels of the factor later on. The name of the column will be saved in an object called: variab the data frame is called df. If I try to the do following:

Hello, I need to add some text in the upper left position, outside a lattice plot. xyplot(x~y) ltext(locator(1), label='My text') doesn't work. I would appreciate any help. Tahnk you, Judith ____________________________________________________________________________________ Be a better friend, newshound, and

Hi, Is there an analog function of textplot in the lattice package? I need to add a data frame to a lattice plot. I work in a Windows environment and I am using R v 2.6.1 Thank you, Judith ____________________________________________________________________________________ Be a better friend, newshound, and