Witcher 3 Could Not Find Function
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Aug 17, 2015 - Error content0gametemp.ws(8410): Could not find function 'AddSessionTag'. Error content0gametemp.ws(10152): Cannot call exec function 'XDPPrintUserStats' from scripts instead of the console. Error content0gameplayerr4player.ws(7621): Could not find function.
I am using R and tried some.function but I got following error message:
This question comes up very regularly. When you get this type of error in R, how can you solve it?
10 Answers
There are a few things you should check :
- Did you write the name of your function correctly? Names are case sensitive.
- Did you install the package that contains the function?
install.packages('thePackage')(this only needs to be done once) - Did you attach that package to the workspace ?
require(thePackage)orlibrary(thePackage)(this should be done every time you start a new R session) - Are you using an older R version where this function didn't exist yet?
If you're not sure in which package that function is situated, you can do a few things.
- If you're sure you installed and attached/loaded the right package, type
help.search('some.function')or??some.functionto get an information box that can tell you in which package it is contained. findandgetAnywherecan also be used to locate functions.- If you have no clue about the package, you can use
findFnin thesospackage as explained in this answer. RSiteSearch('some.function')or searching with rdocumentation or rseek are alternative ways to find the function.
Sometimes you need to use an older version of R, but run code created for a newer version. Newly added functions (eg hasName in R 3.4.0) won't be found then. If you use an older R version and want to use a newer function, you can use the package backports to make such functions available. You also find a list of functions that need to be backported on the git repo of backports. Keep in mind that R versions older than R3.0.0 are incompatible with packages built for R3.0.0 and later versions.
Another problem, in the presence of a NAMESPACE, is that you are trying to run an unexported function from package foo.
For example (contrived, I know, but):
Firstly, you shouldn't be calling S3 methods directly, but lets assume plot.prcomp was actually some useful internal function in package foo. To call such function if you know what you are doing requires the use of :::. You also need to know the namespace in which the function is found. Using getAnywhere() we find that the function is in package stats:
So we can now call it directly using:
I've used plot.prcomp just as an example to illustrate the purpose. In normal use you shouldn't be calling S3 methods like this. But as I said, if the function you want to call exists (it might be a hidden utility function for example), but is in a namespace, R will report that it can't find the function unless you tell it which namespace to look in.
Compare this to the following:stats::plot.prcompThe above fails because while stats uses plot.prcomp, it is not exported from stats as the error rightly tells us:
Error: 'plot.prcomp' is not an exported object from 'namespace:stats'
This is documented as follows:
pkg::name returns the value of the exported variable name in namespace pkg, whereas pkg:::name returns the value of the internal variable name.
I can usually resolve this problem when a computer is under my control, but it's more of a nuisance when working with a grid. When a grid is not homogenous, not all libraries may be installed, and my experience has often been that a package wasn't installed because a dependency wasn't installed. To address this, I check the following:
- Is Fortran installed? (Look for 'gfortran'.) This affects several major packages in R.
- Is Java installed? Are the Java class paths correct?
- Check that the package was installed by the admin and available for use by the appropriate user. Sometimes users will install packages in the wrong places or run without appropriate access to the right libraries.
.libPaths()is a good check. - Check
lddresults for R, to be sure about shared libraries - It's good to periodically run a script that just loads every package needed and does some little test. This catches the package issue as early as possible in the workflow. This is akin to build testing or unit testing, except it's more like a smoke test to make sure that the very basic stuff works.
- If packages can be stored in a network-accessible location, are they? If they cannot, is there a way to ensure consistent versions across the machines? (This may seem OT, but correct package installation includes availability of the right version.)
- Is the package available for the given OS? Unfortunately, not all packages are available across platforms. This goes back to step 5. If possible, try to find a way to handle a different OS by switching to an appropriate flavor of a package or switch off the dependency in certain cases.
Having encountered this quite a bit, some of these steps become fairly routine. Although #7 might seem like a good starting point, these are listed in approximate order of the frequency that I use them.
If this occurs while you check your package (R CMD check), take a look at your NAMESPACE.
You can solve this by adding the following statement to the NAMESPACE:
Witcher 3 Mods Unification Patch
This exports everything that doesn't start with a dot ('.'). This allows you to have your hidden functions, starting with a dot:
I had the error
Error: could not find function some.function
happen when doing R CMD check of a package I was making with RStudio. I found adding
exportPattern('.')
to the NAMESPACE file did the trick. As a sidenote, I had initially configured RStudio to use ROxygen to make the documentation -- and selected the configuration where ROxygen would write my NAMESPACE file for me, which kept erasing my edits. So, in my instance I unchecked NAMESPACE from the Roxygen configuration and added exportPattern('.') to NAMESPACE to solve this error.
This error can occur even if the name of the function is valid if some mandatory arguments are missing (i.e you did not provide enough arguments).
I got this in an Rcpp context, where I wrote a C++ function with optionnal arguments, and did not provided those arguments in R. It appeared that optionnal arguments from the C++ were seen as mandatory by R. As a result, R could not find a matching function for the correct name but an incorrect number of arguments.
Rcpp Function : SEXP RcppFunction(arg1, arg2=0) {}
R Calls :RcppFunction(0) raises the errorRcppFunction(0, 0) does not
Rdocumentation.org has a very handy search function that - among other things - lets you find functions - from all the packages on CRAN, as well as from packages from Bioconductor and GitHub.
Witcher 3 Could Not Find Function In Windows 10
If you are using parallelMap you'll need to export custom functions to the slave jobs, otherwise you get an error 'could not find function '.
If you set a non-missing level on parallelStart the same argument should be passed to parallelExport, else you get the same error. So this should be strictly followed:
You may be able to fix this error by name spacing :: the function call Payday 2 hotline miami mod.
to
I got the same, error, I was running version .99xxx, I checked for updates from help menu and updated My RStudio to 1.0x, then the error did not come
So simple solution, just update your R Studio
protected by Bhargav Rao♦Sep 28 '16 at 11:04
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