search for: tiago17

Hi I have a data.frame with 2 columns. The first column is an ID column. The other columns are description of the ids. There is more than one description for each Id. Want I want to get as a value is a data.frame where each row corresponds to one ID and has as many columns as different descriptions. I have used a very convoluted step, but I'm very convinced there is an easier way to do

Dear R mailing list, I have a dataset with genotypes from trios and I would like to infer haplotypes for each mother, father and child. The package that I could find that can do this is tdthap. But when the mother is homozygous (e.g., 2/2) the haplotype is called as not possible to infer (0); I would prefer for it to call the genotype (2). From what I understand it is doing what I would like

Hi I have two basic questions, and here they go, but I was wondering as well where can I ask these basic questions without bothering you people I've used Splus and now I'm using R and there's some functions that I can't simply find one: sort.col that allows data.frames to be sort by a given col (I saw the funtion sort but that's for vectors. and I can't believe I

Hi a) I want to make a list out of a data.frame, where each element of the list is a column of the data.frame. I looked in the archives and saw a lot of postings but surprsingly none elucidated me. I also tried the split, aggregate help files and counldn't see any easy way to do this. I wouldn't be surprised if it's there, but I really didn't see it. I solved the problem

Dear members of the mailing list, I want to fetch warnings() from a series of prop.test calls. I want to get "none" if no warning is issued, and "warning" if there is a problem. I have looked (and relooked) at options(warn) and warning(), warnings() and 'last.warning' but to no avail. I am a biologist, so the "R language areas" are hard to fully understand.

Very interesting topic. "What I want to know is *WHY* people are doing this?" Here goes my view - I've used many for loops, and each time I realize how stupid that is... AFTER I learned how to avoid it. But it's difficult to avoid them without knowing how to do it. (Monsieur de LaPalice wouldn't have puted it better...) For loops are conceptually very easy to understand.

Hi I want to extract all the rows in a data frame that have duplicates for a given column. I would expect this question to come up pretty often but I have researched the archives and surprisingly couldn't find anything. The best I can come up with is: x <- data.frame(a=c(1,2,2,3,3,3), b=10) xdup1 <- duplicated(x[,1]) xdup2 <- duplicated(x[,1][nrow(x):1])[nrow(x):1] xAllDups <-

Hi to you all My question is: there is a package written in UNIX for which there is no Mac version. I would like to know if it's possible to install the R UNIX version on the MacOSX and run that UNIX package on my Mac (through this UNIX R Vresion on a Mac) I have seen a porfile for r version 1.8.1 on darwin: http://r.darwinports.com/ is that it? aother question related to that if it's

I am trying to make a graph with 4 scatter matrixes plots and couldn't do it. While trying to find a solution for this I also came across the idea of giving different values to the same argument for each of the lower and upper function but couldn't do it. (Examplified below with the col argument). The first problem of plotting 4 scatter matrixes in a graph is a problem of real

Dear Mailing list, I want to plot a matrix using image() and on its side I want to give information to every line of the matrix using colors. I tried to use barplot, but cannot align the two plots. Code below. I succeed in doing what I want using another image() plot, but was wondering whether there is an easier way to do it. Thank you so much! Tiago ############# code ## matrix to plot matI

Hi I want to extract a row from a data.frame but I want that object to be a vector . After trying some different ways I end up always with a data.frame or with the wrong vector. Any pointers? x <- data.frame(a = factor(c('a',2,'b')), b = c(4,5,6)) I want to get "a" "4" I tried: as.vector(x[1,]) a b 1 a 4 (resulting in a data.frame even after in my

Dear R-listers: I want to import a reasonably big file into a table. (15797 x 257 columns). The file is tab delimited with NA in every empty space. I have reproduced what I have used as my read.table instruction. I have read the R-dataImportExport FAQ and still couldn't solve my problem. (I might have missed it, of course). I'm using R.2.01 in a Mac G4, 10.3.7. I can import the