similar to: list concatenation

Hi, first time poster here. During my time using R, I have always found string concatenation to be (what I feel is) unnecessarily complicated by requiring the use of the paste() or similar commands. When searching for how to concatenate strings in R, several top search results show answers that say to write your own function or override the '+' operator. Sample code like the following

Dear RRRRRrrrrrrrrlist! I?ve got two lists which contain sets of DNA-sequences. They look something like this: List of 33 $ Cunonia_atrorubens : chr [1:247] "t" "t" "n" "t" ... $ Cunonia_balansae : chr [1:254] "t" "c" "c" "c" ... $ Cunonia_capensis : chr

Dear all, I would like to concatenate the lists below str(Part2$dataset) List of 3  $ : num [1:16001] 0 0 0 0 0 0 0 0 0 0 ...  $ : num [1:16001] 0 0 0 0 0 0 0 0 0 0 ...  $ : num [1:16001] 0 0 0 0 0 0 0 0 0 0 ... str(Part1$dataset) List of 3  $ : num [1:16001] 0 0 0 0 0 0 0 0 0 0 ...  $ : num [1:16001] 0 0 0 0 0 0 0 0 0 0 ...  $ : num [1:16001] 0 0 0 0 0 0 0 0 0 0 ... I tried concatenating

Hi, I have a problem loading RMySQL 0.5-5 on Mac OS 10.4.2 running R 2.1.1. I installed RMySQL using: export PKG_CPPFLAGS="-I/usr/local/mysql/include" export PKG_LIBS="-L/usr/local/mysql/lib -lmysqlclient" R CMD INSTALL /Users/gwo/Desktop/RMySQL_0.5-5.tar.gz The installation seemed to work ok, but when I load RMySQL in R I get an error message: >library(RMySQL)

I have this: <%= @tech_standard.category + " " + @tech_standard.point + "." + @tech_standard.subpoint %> I get this error: cannot convert Fixnum into String point and subpoint are number. How do I concatenate those values? Seth Buntin Web Resources Coordinator Kentucky Academy of Technology Education Murray State University --------------

Hi How do I concatenate two lists element-by-element? Example: list.1 <- list(temperature=c("hot","cold") , size=c("big","medium")) list.2 <- list(temperature=c("lukewarm") , size=c("massive","tiny")) list.wanted <- list(temperature=c("hot","cold","lukewarm") ,

Hi Joshua, On 06/16/2015 03:32 PM, Joshua Bradley wrote: > Hi, first time poster here. During my time using R, I have always found > string concatenation to be (what I feel is) unnecessarily complicated by > requiring the use of the paste() or similar commands. > > > When searching for how to concatenate strings in R, several top search > results show answers that say to

On Tue, Jun 16, 2015 at 8:24 PM, Herv? Pag?s <hpages at fredhutch.org> wrote: [...] > > If I was to override `+` to concatenate strings, I would make it stick > to the recycling scheme used by arithmetic and comparison operators > (which is the most sensible of all IMO). Yeah, I agree, paste's recycling rules are sometimes painful. This could be "fixed" with a nice

Hi, I have a dataframe with some 800 rows and 14 columns. Could you please advise how I can concatenate the rows - one after another. Similarly for columns, one below the other. Many thanks. Cheers, Santana [[alternative HTML version deleted]]

Just to clarify, primitive (C-level) generics do not support dispatch on basic classes (like character). This is for performance (no need to consider dispatch on non-objects) and for sanity (in general, redefining fundamental behaviors is dangerous). It is of course possible to define a "+" method with a signature containing a class not in the set of basic classes. On Tue, Jun 16, 2015

Gabor Csardi writes: > Btw. for some motivation, here is a (surely incomplete) list of > languages with '+' as the string concatenation operator: > > ALGOL 68, BASIC, C++, C#, Cobra, Pascal, Object Pascal, Eiffel, Go, > JavaScript, Java, Python, Turing, Ruby, Windows Powers hell, > Objective-C, F#, Sc-ala, Ya. The situation for R is rather different from that of a

A general problem i run into, i know there must be a simple solution. I like to create a variable by appending a 1 for example, (i need to loop later on from 1 to X, thus the reason for this). So i assign the variable vplot with this value, however it has quotes and when i use it in a barplot, it throws an error. but the tcenter$X1 does exist, its an element of a data frame. So if i type

Hello all, I've run into what I bet is a silly problem; however, I've been trying to get around it now for a couple weeks and every time I think I have the answer it still doesn't work. So I apologize in advance if this is painfully obvious, but I've run out of ideas and would really appreciate any input. My situation is this, I'm importing a number of tab

Bad choice of words I'm afraid. What I'm ultimately pushing for is a feature request. To allow string concatenation with '+' by default. Sure I can write my own string addition function (like the example I posted previously) but I use it so often that I end up putting it in every script I write. It is ultimately a matter of readability and syntactic sugar I guess. As an example, I

"c" an extremely commonly-used function. Functions are first-class objects that occupy the same namespaces that variables do, so they can obscure each other. In short, don't use variables called "c" (R is case sensitive, so "C" has no such problem). Wherever possible, avoid incremental concatenation like the plague. If you feel you must use it, at least

Hi! Short version of my question: How to produce Opus frames which can be safely concatenated and how to embed them into a WebM file? Long version: I'm currently implementing a web-based audio player which streams audio as opus/WebM using the HTML5 media source extensions. Currently, the server decodes a set of input files to a fixed RAW audio format (stereo, 48000 kHz) and encodes the

Hello, Suppose the you need a loop to create a new variable , i.e., you are not reading data from outside the loop. This is a simple example in Matlab code, for i=1:5 r1=randn r2=randn r=[r1 r2] c(i,:)=r; % creation of each row of c , % the ":" symbol indicates all columns. In R this would be [i,] end The output of interest is c which I'm creating inside the "for" loop

Gabor, Thanks much. Your solution is elegant. My overall scheme is to take present date, and check whether it is a weekend, if not, then create a string based on the date, to concatenate into a url link for download.file( ). The files I need to download have a part which is in the format: mmddyy. I am working to make myself a system to connect to exchanges, and download end of day files from

Dear R-users, I am developing a plotting function, which receives expressions and character/numerical vectors as part of the many input arguments and which tries to concatenate them before displaying the result to the plot. I currently cannot find a way to make this concatenation works. I have read several posts in the list that solved this problem by pasting the different elements together

Dear all, I am trying to run Wilcoxon Rank-Sum Test with Bonferroni's correction. I have two lists: l0, l1: mapply(function(x,y)wilcox.test(x,y)$p.value, l0, l1) How do I run Bonferroni's correction on mapply? Any help is much apperciated. Thanks, -Raj