similar to: Convert "\" to "/"?

Hello, All: What can people tell me about converting back slashes to forward slashes in character strings? Several years ago, Prof. Ripley provided a solution, which I lost and have not been able to find. Below please find a function to do this. I do not find this very satisfactory, however, because it uses "scan" and therefore operates on an input not a

Hello, All: The vignette with the sos package used "upquote.sty", required for R Journal when it was published in 2009. Current CRAN policy disallows "upquote.sty", and I've so far not found a way to pass "R CMD check" with sos without upquote.sty. I changed sos.Rnw per an email exchange with Prof. Ripley without solving the problem; see below. The

I have released a new, faster, version of R, which I call pqR (for "pretty quick" R), based on R-2.15.0. Among many other improvements, pqR supports automatic use of multiple cores to perform numerical computations in parallel with other numerical computations, and with the interpretive thread. It also implements a true reference counting scheme to reduce the amount of unnecessary

A new version of pqR is now available at pqR-project.org, which fixes several bugs that are also present in the latest R Core patch release (r66002). A number of bugs found previously during pqR development are also unfixed in the latest R Core release. Here is the list of these bugs that are unfixed in r66002 (including documentation deficiencies), taken from the pqR bug fix and documentation

Dear R forum I have a data.frame as cashflow_df = data.frame(instrument = c("ABC","ABC","ABC","ABC","ABC","ABC","ABC","ABC","ABC","ABC","ABC","ABC","ABC","ABC", "ABC", "PQR", "PQR",

Dear R helpers   After executing the R code, where the last few lines of the code are something like given below.     ## Part of my R code     n = 20   ........ .........   final_output = data.frame(Numbers = numbers, ABC = data1, XYZ = data2, PQR = data3)           write.csv(data.frame(Scenario = paste("Sc_", 1:n, sep = ""), final_output'), 'result.csv', row.names

Is there a good strategy for testing examples which should not be run by default? For instance, I have examples which get data from the Internet. If I wrap them in try() then they can be skipped if the Internet is not available, but may not be tested in cases when I would like to know about the failure. (Not to mention that the example syntax is ugly.) If I mark them \dontrun or \donttest

Dear R helpers   I have some variables say ABC, DEF, PQR, LMN and XYZ. I am choosing any three varaibles at random at a time for my analysis and name these files as input1.csv, input2.csv and input3.csv. So if I choose variables say ABC, DEF and PQR, I am passing the specifications of these variables to input1.csv, input2.csv and input3.csv respectively.   This means in another case even if I

Dear R Forum, I have a data.frame as df = data.frame(date = c("2013-04-15", "2013-04-14", "2013-04-13", "2013-04-12", "2013-04-11"), ABC_f = c(62.80739769,81.04525895,84.65712455,12.78237251,57.61345256), LMN_d = c(21.16794336,54.6580401,63.8923307,87.59880367,87.07693716), XYZ_p = c(55.8885464,94.1358684,84.0089114,98.99746696,64.71083712),

Dmitriy Selivanov (selivanov.dmitriy at gmail.com) wrote: > Consider following example: > > a = matrix(1:2, nrow = 2, dimnames = list(c("row1", "row2"), c("col1"))) > a[1, ] > # 1 > > It returns *unnamed* vector `1` where I would expect named vector. In fact > it returns named vector when number of columns is > 1. > Same issue applicable

I am trying to write a program that uses R and takes a pdb file, and converts it to a pqr file. This task is simple generally, using the website, http://pdb2pqr-1.wustl.edu/pdb2pqr/. How do you use R to input a pdb file (that is on hand) into the upload pdb file input, and run the website and give the return file to be a pqr file. Thanks for your help. -- View this message in context:

Hi, I am new in R, i have a matrix like this MyMatrix <- *ABC PQR XYZ* 10 20 30 40 50 60 70 80 90 And, i have an array containing some conditions like this, MyArray <- c("*ABC*>50","*PQR*<50","*ABC*<30 &* XYZ*<40") "ABC>50" "PQR<50" "ABC<30 & XYZ<40"

Hi again; I have placed many examples in the CTFS Rd pages because my audience really really likes lots of examples in order to understand the options available in a functions. At this time I have set them all to \dontrun{}. however, this isn't because the example command line with its function and options won't work, but rather that CTFS specific datasets must exist to have the

You've answered my question 2 about why the manual was in odd order > R CMD check was more of a check of the latex version of the files, not > the final manual. I was looking at the result of R CMD check, and it was in random order (perhaps file date?), not just a different collation choice. Very odd. I will cease worrying about what I might have "done wrong". I omitted the

Could you please tell me what is the function or method to get count of elements in all the columns in a matrix ? for eg :- ABC XYZ PQR ------ ----- ------ 2 3 4 4 5 5 4 3 2 Result will be like ABC XYZ PQR ------ ----- ------ 2 4 3 Could you please help me

In testing pqR on Solaris SPARC systems, I have found two bugs that are also present in recent R Core versions. You can see the bugs and fixes at the following URLs: https://github.com/radfordneal/pqR/commit/739a4960a4d8f3a3b20cfc311518369576689f37 https://github.com/radfordneal/pqR/commit/339b7286c7b43dcc6b00e51515772f1d7dce7858 The first bug, in nls, is most likely to occur on a 64-bit

I'll go just a bit "fer-er." It appears the anomaly -- I hesitate to call it a bug -- is in the C code for duplicated.default(): > duplicated(letters[1:10],nmax=10) [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > duplicated(letters[1:10],nmax=9) [1] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE > duplicated(letters[1:10],nmax=8) ## for

Well, you won't like this, but it is kind of wimpily (is that a word?) documented: If you check the code of factor(), you will see that nmax appears as an argument in a call to unique(). ?unique says for nmax, "... see duplicated" . And ?duplicated says: "If nmax is set too small there is liable to be an error: nmax = 1 is silently ignored." So sometimes you get an error

Hi, source(file,echo=T) will not echo the last comment in "file" if it is the last line in the file. For instance, when sourcing a file containing the following lines #comment 1 a<-1 #comment 2 R will echo > #comment 1 > a<-1 What is the solution to have R echo all of the comment lines? Specific context: This problem arises e.g. in the context of help files (.Rd) whose

There are websites using python to convert a pdb to a pqr. I was wondering if there is a simpler way to do it. We have a protein in pdb format, and want to convert that to a pqr file so that the program apbs can open it. We want to accomplish this conversion in R. Thank you for your help. -- View this message in context: http://n4.nabble.com/Converting-pdb-to-pqr-tp1475426p1475426.html Sent