Suchergebnisse
Suchergebnisse:
25. Nov. 2014 · Update 2 R has defined a |> pipe. Unlike magrittr's %>% it can only substitute into the first argument of the right hand side. Although limited, it works via syntax transformation so it has no performance impact. As of R v4.1.0, |>, is included in base-R and being advocated by the Tidyverse in place of %>% for most use cases. See R for Data ...
\r (Carriage Return) → moves the cursor to the beginning of the line without advancing to the next line \n (Line Feed) → moves the cursor down to the next line without returning to the beginning of the line — In a *nix environment \n moves to the beginning of the line. \r\n (End Of Line) → a combination of \r and \n
386. The infix operator %>% is not part of base R, but is in fact defined by the package magrittr (CRAN) and is heavily used by dplyr (CRAN). It works like a pipe, hence the reference to Magritte's famous painting The Treachery of Images. What the function does is to pass the left hand side of the operator to the first argument of the right ...
in RStudio Server (not CLI R, which works), R cannot load required shared object file (libproj.so.25) even though file exists I've been using RStudio on a cluster for which I do not have sudo rights, which complicates matters.
The operators <- and = assign into the environment in which they are evaluated. The operator <- can be used anywhere, whereas the operator = is only allowed at the top level (e.g., in the complete expression typed at the command prompt) or as one of the subexpressions in a braced list of expressions.
6. Jan. 2016 · in Unix and all Unix-like systems, \n is the code for end-of-line, \r means nothing special. as a consequence, in C and most languages that somehow copy it (even remotely), \n is the standard escape sequence for end of line (translated to/from OS-specific sequences as needed) in old Mac systems (pre-OS X), \r was the code for end-of-line ...
14. Aug. 2009 · They're different characters. \r is carriage return, and \n is line feed. On "old" printers, \r sent the print head back to the start of the line, and \n advanced the paper by one line. Both were therefore necessary to start printing on the next line. Obviously that's somewhat irrelevant now, although depending on the console you may still be ...
26. Nov. 2012 · Configure the language for R: Open or create the .Renviron file in your home directory with the following command: nano ~/.Renviron. Add the following line to set the default language of R to French: LANGUAGE=fr_FR. Restart R: Close and reopen your R session for the changes to take effect.
You can test it in big datasets and it is relatively fast. Of course, it won't be as fast as data.table::setnames(), but this is a useful solution for base R work. The nice thing about this approach is that the new and old names can be in any order and the old names do not even need to be present in the data, they are just ignored. The only ...
26. Juli 2012 · I am wondering how and why the operator %% and %/% are for the remainder and the quotient. Is there any reason or history that R developer had given them the meaning they have?
