similar to: intersect character

> intersect(c(1,3,2),c('1','3')) [1] "1" "3" Apparently, intersect() treats num as string. But this is not documented in the help. Could somebody add it in the future version of R? Also according to the help, the argument should not have duplicated elements. But I tried the following example, it seems that it doesn't matter where there are duplicated

Hi I have probably a very simple question but I'm going crazy trying to find the solution. I have two data.frames with headers and I'm doing an intersection between them by names, such that the intersected data.frames are returned by: df1[intersect(names (df1), names(df2))] and the same for df2 Now, I want to have all the opposite data that did not intersect. I tried to do:

Hi everyone, I am pretty new to R, so be patient. I am trying to intersect 2 columns and in the rows that intersect, I want information from the 3rd column to be brought with it. I think it will be easier to explain with an example example.csv <http://r.789695.n4.nabble.com/file/n4675136/example.csv> . In my example, I have a reference list of fruit (first column), and my fruit of

Hi all, The ?intersect entry kindly points out that it discards duplicate entries. I'm looking, however, to get the intersection while KEEPING duplicate entries, and there are no instructions on how to accomplish this using intersect(). Does anybody have any idea how this might be done, or am I going to need to program something from scratch (something like ordering the vectors and then

This code gives an error: a <- ts(1:10, start=0, freq=10) b <- ts(1:10, start=1, freq=10) ts.intersect(a,b) This one works normally (and correctly): a <- ts(1:10, start=0) b <- ts(1:10, start=1) ts.intersect(a,b) Antonio, Fabio Di Narzo. P.S. How to switch off italian error messages to post on r-help? > version _ platform i386-pc-mingw32 arch i386 os

This seems like a FAQ, but I can't figure it out. I have a mv ts object: R > tsp(pg) [1] 1982 2003 1 R > dim(pg) [1] 22 12 and a univariate ts: R > tsp(rw) [1] 1690 1996 1 Yet, when I try to intersect them: R > tsp(ts.intersect(rw, pg)) [1] 1982 2176 1 the process goes awry. How to I get rw and pg to be one ts that runs from 1982 to 1996 and has 13 univariate time

Hi all, Is there a way to get the index of elements in intersect(x,y) where x and y are vectors with few common elements. Appreciate your response. Praveen Surendran. [[alternative HTML version deleted]]

I have 2 sets of data which defines the start and end of date/time periods. I want to be able to obtain the following: 1) The intersect of those 2 sets of date/time ranges i.e. return start/end date/time ranges where both sets overlap 2) The union of those 2 sets of date/time ranges i.e. return the start/end date/time ranges which are in 1 or both sets Is there anything that is currently able

I have a need to build a time series and there are a couple of aspects about the time series object that are confusing me. First it seems that ts.union is not doing what I would expect. For example: x0 <- rep(0,10) x1 <- rep(1,10) xt0 <- ts(x0, frequency=10) xt1 <- ts(x1, frequency=10) st2 <- ts.union(xt0, xt1) > xt2 Time Series: Start = c(1, 1) End = c(1, 10) Frequency = 10

Greetings! I am a new user of R. The only one in my department, all others use SPSS. I have two data sets of students with test scores, pretest and posttest. The first column StuNum and then columns of scores. The problem is that the lists are slightly different not all students are in both data sets. So I did: intersect(pretest$StuNum, posttest$StuNum) -> common.id At this point I need

Hi, Sorry if this is already known... contour() sometimes draws contour lines that intersect. Is there a temporary fix? A dataset which causes problems is at http://www.maths.uwa.edu.au/~adrian/dumpdata.R If you try just source("dumpdata.R") image(huh) contour(huh) the 100 x 100 matrix 'huh' contains an hourglass-shaped region of values around 0.8. The contour plot

Dear R users; Is there any way to intersect a filled contour image and a polygon? My problem is that I want to create a kriging map and the boundaries of my map are given by the coordinates of the polygon. So far I can superompose the polygon in the filled.contour image but I don't know how to get rid of the contour image outside of the polygon boundaries. Any hint will be appreciated PM

hola, tengo dos vectores de 1134 y 385 elementos que se corresponden con números de accesión de genes. Necesito saber que números son comunes o intersección de vectores. He utilizado intersect(x,y) y me da todo el rato un único valor: V1 V1.1 V1.2 V1.3 V1.4 V1.5 V1.6 V1.7 V1.8 V1.9 V1.10 V1.11 V1.12 1 AJ558305 AJ558305 AJ558305 AJ558305 AJ558305

Hi all, As far as I can tell, the only canned way to do an intersect between two vectors of ints is the intersect(vec1, vec2) function -- is there another function I'm missing for intersecting more than two vectors?? TIA, Ken

useR's, First, I would like to say thanks to John Fox for providing this segment of code to perform intersection for multiple sets: intersection <- function(x, y, ...){ if (missing(...)) intersect(x, y) else intersect(x, intersection(y, ...)) } I want to execute this function on the rows of a matrix I have: Ik.mat.test <- matrix(c(2,3,6,1,2,6,6,1,2),byrow=T,nrow=3) > Ik.mat.test

Hi all, I don't know if this is the correct venue for this question, but I am sure that someone will correct me if I am in the wrong list. I have been searching throughout R for a function that can find the intersection of multiple sets of "things". Say for instance, I have a list of $n$ character vectors and would like to find the intersection of all $k$ subsets. I don't

Know that if I have List_1 and List_2 that I can check to see if the intersect via the code below: List _1: a, b, c, d, e, f, g List_2: z, y, x, w, v, u, b length(intersect(List_1, List_2)) > 0 return = true If instead I wanted to check a dataframe that is a "list of lists," how would I do that by record without looping? List _1: a, b, c, d, e, f, g List_2: z, y, x, w, v,

v1<-c("a","b","c","d") v2<-c("a","b","e") v3<-c("a","f","g") I want to get the intersection of v1,v2,v3,ie "a" How can I do then? What I know is only for 2 vectors via "intersect" function,but don't know how to deal with multiple vectors. Many thanks

Hi, Is there a command to get the indices of intersecting elements of two vectors as intersect() will give the elements and not its indices. Thanks in advance. Praveen Surendran School of Medicine and Medical Sciences University College Dublin Belfield, Dublin 4 Ireland. [[alternative HTML version deleted]]

This is not a bug, nor is the subject line true: both do accept factors but what they do with factors is undocumented. From the help (not 'man') page Performs *set* union, intersection, (asymmetric!) difference, equality and membership on two vectors. ^^^^^^^ so it is not said to work on factors. I disagree that what intersect() for