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48 results for “from:mdvaan”

Select elements from text
mdvaan · Jan 25, 2012 · r-help

Thanks. That worked great! -- View this message in context: http://r.789695.n4.nabble.com/Select-elements-from-text-tp4323947p4327711.html Sent from the R help mailing list archive at Nabble.com.

Selections in lists
mdvaan · Sep 1, 2011 · r-help

Thanks David and Jorge for your comments! -- View this message in context: http://r.789695.n4.nabble.com/Selections-in-lists-tp3768562p3784816.html Sent from the R help mailing list archive at Nabble.com.

Reduce(paste, x) question
mdvaan · Nov 2, 2012 · r-help

Thanks Arun, this helps a lot! -- View this message in context: http://r.789695.n4.nabble.com/Reduce-paste-x-question-tp4648151p4648228.html Sent from the R help mailing list archive at Nabble.com.

Selecting and multiplying
mdvaan · Sep 6, 2011 · r-help

Anyone any idea on how to tackle this problem? Thanks a lot! -- View this message in context: http://r.789695.n4.nabble.com/Selecting-and-multiplying-tp3784901p3793908.html Sent from the R help mailing list archive at Nabble.com.

Extract upper case letters
mdvaan · Jun 27, 2012 · r-help

t <- "TheWeatherIsVeryNice" How do I extract the upper case letters? - TWIVN Thanks! -- View this message in context: http://r.789695.n4.nabble.com/Extract-upper-case-letters-tp4634664.html Sent from the R help mailing list archive at Nabble.com.

strapply and characters adjacent to the matched pattern
mdvaan · Jul 26, 2012 · r-help

Thanks Gabor for your invaluable help! I learned a lot. -- View this message in context: http://r.789695.n4.nabble.com/strapply-and-characters-adjacent-to-the-matched-pattern-tp4637673p4637939.html Sent from the R help mailing list archive at...

Merging fully overlapping groups
mdvaan · Mar 14, 2012 · r-help

Hi Jean and Peter, Thanks for the help. Both options are indeed faster than my initial procedure. Best, Mathijs -- View this message in context: http://r.789695.n4.nabble.com/Merging-fully-overlapping-groups-tp4470999p4473013.html Sent from the R...

Divide matrix into multiple smaller matrices
mdvaan · Jun 12, 2011 · r-help

Hi, I still haven't found a solution for this problem. Is there a way in which I can slice the objects in c based on the info in h? Thanks a lot! -- View this message in context: http://r...

evaluate whether function returns error
mdvaan · May 25, 2012 · r-help

Hi, The following returns an error message. How do I evaluate (TRUE or FALSE) the function? require(XML) readHTMLTable("http://www.sec.gov/Archives/edgar/data/2969/000095012399010952/0000950123-99-010952.txt") Thanks in advance! Math -- View this message in...

Adding objects to a list
mdvaan · Jun 20, 2011 · r-help

#Hi list, #From the code below I get two list objects (n$values and n$vectors): dat <- matrix(1:9,3) n<-eigen(dat) n # How do I add another object to n that replicates n$vectors and is called...

Reduce(paste, x) question
mdvaan · Nov 1, 2012 · r-help

I have a question about the Reduce function: x <- list() x[[1]] <- LETTERS[1:5] x[[2]] <- LETTERS[11:15] Reduce(paste, x) [1] "A K" "B L" "C M" "D N" "E O" How do I get this?: [1...

gsub/strsplit with multiple patterns/splits
mdvaan · May 30, 2012 · r-help

Hi, I have a vector like this: DF <- c("Aetna, Inc.", "Alexander's Inc.", "Allegheny Energy, Inc") For each element in the vector I would like to remove the "incorporated" info, so that my vector looks like this: DF <- c...

ggplot axis limit
mdvaan · Mar 16, 2012 · r-help

Hi, This is probably an easy one, but I am new to ggplot2 and cannot find an answer online. I am bar plotting values of 10 groups. These values are all within a 90-100 range, so I would like...

gsub/strsplit with multiple patterns/splits
mdvaan · May 30, 2012 · r-help

Thanks! That works like a charm, but I am not sure if I fully understand the syntax. I looked at the gsub page but still couldn't figure it out. What does the pattern part (",{0,1} Inc[.]{0,1...

Plotting network without overlapping vertices
mdvaan · May 2, 2012 · r-help

Hello, I am using the plot.igraph function in the igraph package to plot a network. How do I keep vertices from overlapping? One option would be to pass an argument that restricts vertices to occupy the same coordinates given...

Scrape data from Scopus: login through R?
mdvaan · Apr 22, 2012 · r-help

Hello, The Scopus bibliographic database allows one to manually download batches of 2000 publications. The data is rich but does not provide one with a field containing the author id. However, author id's can be retrieved through the hyperlinks...

Reduce(paste, x) question
mdvaan · Nov 1, 2012 · r-help

I should have been more specific: y <- list() a <- c("A", "K") b <- c("B", "L") c <- c("C", "M") d <- c("D", "N") e <- c("E", "O") y[[1]] <- a y[[2]] <- b y[[3]] <- c y[[4]] <- d...

Select elements from text
mdvaan · Jan 24, 2012 · r-help

Thanks for the quick response. I get the latter part, but reading the text from MS word into R is problematic. I am able to read in (scan) all unique elements (following sep=" ") from the text, but unable to past...

Counting occurrences in a moving window
mdvaan · Jun 3, 2011 · r-help

Would it be possible to use the sqldf package and the ave function to simply run ave over a limited set? So something like: DF = data.frame(read.table(textConnection(" A B 8025 1995 8026 1995 8029 1995 8026 1996...

Multiply list objects
mdvaan · Jun 16, 2011 · r-help

I am still thinking about this problem. The solution could look something like this (it's net yet working): k<-lapply(h, function (x) x*0) # I keep the same format as h, but set all values to 0 years...

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