search for: self_t1d

...protein comb', 'AUC') pdf('ROC Charts-3plex.pdf') #generate combinations pc3 = combinations(n=length(mols),r=3) #runing the combinations for (len in 1:dim(pc3)[1]) { prs = pc3[len,] ## new data mat samples <- mols[prs] mat <-data [,c(samples,'Self_T1D')] mat<-mat[complete.cases(mat),] ##### LDA ######### rows<- c(1:nrow(mat)) scores <- c() labels <-c() for (itr in 1:1000) { train <- sample(rows, length(rows)-1) label =0 ; if (mat$Self_T1D[-train] == "N") label = 1 #need the value for this line, should it...

...data as per Dennis's suggestion in this post http://www.mail-archive.com/r-help at r-project.org/msg107156.html. the posted code works fine but when I try to apply it to my data, i get "> u2 <- ddply(xxm, .(plateid, cytokine), as.data.frame.function(f)) Error in t.test.formula(conc ~ Self_T1D, data = df, na.rm = T) : grouping factor must have exactly 2 levels". Self_T1D has two levels "N" and "Y" I have used the ddply function to do the mean and sd for the same dataframe without any issues. I would appreciate help to solve this. Thanks Sharad -- View this m...

...edu.au/R/e6/help/09/04/11438.html#options2 and I used the suggestion provided by Jorge with modifications to my data do.call(c,lapply(your_list_with_the_t_tests,function(x) x$p.value)) but I am getting the following error after excuting the code B<-by(eo,eo$PlateID, function(.sub) t.test(mcp1~Self_T1D,data=.sub, na.rm=T)) #ttest platewise do.call(c,lapply(B, function(x) x$p.value)) Error in do.call(c, lapply(B, function(x) x$p.value)) : 'what' must be a character string or a function here "B" is equal to "your_list_with_the_t_tests. is something i am doing wrong >...

I'm trying to wean myself off the very limited capabilities of Excel and Oo. Currently, I am trying to make a plot showing several values for 2 categories in a dot blot (see http://www.nabble.com/file/p24538360/Picture%2B1.png Picture+1.png except that the x axis should contain the category not a number, which was the only way to coax Excel into displaying a plot like this). I started

Hello everybody, I'm a newbie in R and just went through an introduction class recently. Here's my problem. I have 2 text files (.txt) with plain numbers ('doubles' for those who know c++) ordered into 2 columns as below: coordinate1 value1 coordinate2 value2 coordinate3 value3 ... ... coordinateN valueN I would like to write a small programme in which i would: 1. take