similar to: Character position command

Let's say that I have a bunch of matrices. They look like this (pardon using fruit for examples, my actual data tables are far too enormous): Matrix1 Apples Oranges Pears A 5 6 7 B 5 3 4 C 8 9 10 D 11 13 14 E 15 3 8 F 1 4 5

Hi all, I have a very simple problem that I cannot seem to find the answer to. Consider the following toy dataset: x <- read.table(textConnection("V1 apples bananas cherries indv.1 7 8 4 3 indv.2 7 7 4 9"), header = TRUE) How would I change the column name of ONLY the first column, not the others? Surely I should not have to re-specify the names of ALL the columns -- e.g.,

Hi all, I'm trying to find something like the "==" operator that will work on vectors or something equivalent to SQL's "IN" function. For e.g., if I have: x <- c(1,2,3,4,5) y <- c("apples", "oranges", "grapes", "bananas", "pears") z <- data.frame (x,y) w <- c(2,4,5) I want R to return the values

df=data.frame(country=c("A","A","A","B","B","B"), food=rep(c("Apples","Pears","Bananas"),2), X2000=c(4,5,6,7,6,8), X2001=c(4,5,6,7,6,8), X2002=c(4,5,6,7,6,8), X2003=c(4,5,6,7,6,8)); I have data in the above form trying to get a plot of each fruit over time year conditioned on country and

I'm working on the installer code, but I don't know Perl well enough. What is a good Perl equivalent of the R statement if ( s %in% c('string1', 'string2', 'string3') ) ... I can do it with if (s == "string1" || s == "string2" || s == "string3") ... but I've got a feeling there's a better way to do it using associative

Hello, I would like to combine two strings while using R. For instance, string1 <- "abcde" string2 <- "WXYZ" I'd like to combine string1 and string2 into Sting3; and string3 should be "abcdeWXZY". Would you please tell me how to do it? Thank you very much Ben-Yang [[alternative HTML version deleted]]

I hope that somebody can help me with this - I think very simple - issue...? I am running a package that only accepts one line at a time, but I would like to run this package on a dataframe of >500 lines. Dataframe "d" is a single column: APPLES PEARS AUBERGINES KUMQUATS I would like to read one line of my dataframe "d", individually into a new frame "f", then

I want to assign different colors to different strings using mtext(...). However, when I use something like mtext(text=c("string1","string2","string3"), col=c("black","blue","red"), side=3, line=0) string2 and string3 are printed over string1. When I use paste("string1","string2","string3"), the series

Hello everyone, I am attempting to use the %in% operator with the ! to produce a NOT IN type of operation. Why does this not work? Suggestions? > data2[data1$char1 %in% c("string1","string2"),1]<-min(data1$x1) > data2[data1$char1 ! %in% c("string1","string2"),1]<-max(data1$x1)+1000 Error: unexpected '!' in "data2[data1$char1

Hi! I am in a bit of trouble, I have moved a samba installation from one virtual host to another keeping the configuration files and filesystems. But during the transition something broke, now windows users are no longer able to access their shares. I think it has to do with the AD integration. I do not know it it because some state is missing on this host related to the AD integration or if

Hello R-help - I have vec <- c("string1", "string2", "string3") ind <- list(c(1,2),c(1,2,3)) I want "vec" indexed by each vector in the list "ind". The first element of the list I want would be vec[c(1,2)], the second element would be vec[c(1,2,3)], like the following. [[1]] [1] "string1" "string2" [[2]] [1]

Dear R Group Here is what i am trying to do.. but couldnt figure out how.. string<-"ABC DEFG HIJKLM NOPQ RSTUV WXY" string1<-substr(string,1,4) I want to create an R object string 2 ( following the logic shown).. R does not allow string subtraction.. any suggestions how to achieve this? string2<-string-string1 (it should now hold "DEFG HIJKLM NOPQ RSTUV WXY" I

Colleagues, I am trying to create a PDF document in which I use margin text with two different fonts. The resulting text might be: XXXXXyZZZ where X and Z are one font and Y is the other. My plan was to do this in the following manner: mtext("XXXXX ZZZ", cex=2, adj=0.5, family=SOMEFONT) mtext("Y", cex=2, adj=??, family=DIFFERENTFONT) My question regards how to calculate

I'm a relative R novice, and sometimes the simple things trip me up. Suppose I have a <- c("apple", "pear") and I want a logical vector of whether each of these strings contains "ear" (in this case, F T). What is the idiom? Quizzically, Mark Lindeman

This may be offtopic to Rails, but what are people doing to find records based on fuzzy string matches? For example, if you wanted to find a Person with name "David Heinemeier Hansson" but searched using the string "Dave Hansson". Currently I am find_by_sql that calls the PostgreSQL function "levenshtein(string1, string2)" which returns results with a score

Hi, I am considering using R to integrate with a Java application. However, before deciding upon R I need to understand if R is capable of dealing with multiple requests simulataneously. Is a single instance of R capable of dealing with multiple simulataneous requests or does a new instance of R have to be started for each request? I have read Luke Tierney's 2001 notes on threading at

Dear All, I need to estimate the level of similarity of two strings. For example: string1 <- c("depending","audience","research", "school"); string2 <- c("audience","push","drama","button","depending"); The words in string may occur in different order though. What function would you recommend to use

Can someone help me with the code I can use to extract word preceded by hash tag in live tweets download from twitteR. An example of what I require is: [[9]] [1] "HollandUKTrade: #Dutch companies striking Olympic gold at London 2012 http://t.co/XsvvXAzT #london2012 #olympics #sport @hollandtrade @dutchembassyUK" (Tweet download) I want a code that will extract this: #Dutch companies

what does this mean in R-1.8.1 release notes? o median() no longer `works' for odd-length factor variables.

libswfdec/swfdec_as_context.c | 24 +++ libswfdec/swfdec_as_context.h | 2 libswfdec/swfdec_as_frame.c | 56 +++++-- libswfdec/swfdec_as_frame.h | 4 libswfdec/swfdec_as_interpret.c | 18 +- libswfdec/swfdec_as_object.c | 85 +++------- libswfdec/swfdec_as_object.h | 16 +-