This question already has answers here:
What does "The following object is masked from 'package:xxx'" mean?
(2 answers)
Closed 5 years ago.
This is a newbie question in R. If you have two libraries in R with same function name (and one masking the other) then how do you use the masked function.
A concrete example:
Both UsingR and QRMlib have the function QQPlot(), and UsingR's QQplot is masking that of QRMlib. How can I use the QQplot function of QRMlib.
Thank you
Addition: Just found out that QRMlib::QQplot() works, thus modifying the question that I found in the web. What if they don't have a namespace in which case the above approach will not work.
Link to the original question posed in google:
https://stat.ethz.ch/pipermail/r-help/2005-March/067710.html
UsingR::QQPlot() and/or QRMlib::QQPlot()
Try to load preferred library last, since it will mask the "unwanted" function...
All the best!
Related
This question already has an answer here:
How to find the package name in R for a specific function?
(1 answer)
Closed 2 years ago.
Due to the characters, I'm having a hard time googling for which package the %||% function comes from.
I have tried googling the string literal, as well as 'percent bar bar percent' and similar.
It is present in rlang package. See
?rlang::`%||%`
It behaves like dplyr::coalesce but for NULL values instead of NAs.
This question already has answers here:
How can I view the source code for a function?
(13 answers)
Closed 6 years ago.
I am running the following code
x=wilcox.test(rnorm(10), rnorm(10))
Now my question is: How to see the R code of this test? When I am running "wilcox.test" in console, it is printing
function (x, ...)
UseMethod("wilcox.test")
<bytecode: 0x3d73148>
<environment: namespace:stats>
This question may be very trivial but I am stuck here.
Use
methods("wilcox.test")
to find out which methods are implemented. Then use getAnywhere to see the method you are interested in:
getAnywhere("wilcox.test.default")
This question already has answers here:
Why is using `<<-` frowned upon and how can I avoid it?
(2 answers)
Closed 8 years ago.
What's the difference between "<-" and "<<-" in R? I have read the help file in R. But I still don't understand their difference. Could any one provide an example? Thanks a lot!
used inside a function, the standard "<-" operator defines a variable inside this function and the variable will not be available outside.
Using "<<-" enables your function to define a variable outside, aka in the global environment, for further use.
That is quite useful in fact!
This question already has answers here:
Show names of everything in a package
(4 answers)
Closed 9 years ago.
My question is similar to this question and in fact, is answered there. But because it took me a lot effort to find the answer there. I preferred to create a new more organized one and answer it myself.Now the question is:
If I want to see all methods, dataframes, etc of a package that I only know its name, what should I do to access them very easily?
Just enter this code:
help(package='PACKAGENAME', help_type='html')
for example to see all you have in the R basic package, stats:
help(package='stats',help_type='html')
This question already has answers here:
Figure out what version of R a function was introduced in
(2 answers)
Closed 9 years ago.
Is there a way to determine rather easily when an R function was added (what version number). Take for instance when were:
paste0 and browseVignettes added?
I'm not really looking for when these were added but a way to see when they were added.
Converting my comment to an answer as requested:
You can use the news() function
news(grepl("paste0", Text))
Go here: http://cran.r-project.org/src/base/NEWS.html
paste0 was in 2.15.0 and browseVignettes was 2.13.0 but it doesn't seem to mention browseVignettes.