Error: could not find function … in R

I am using R and tried some.function but I got following error message:

Error: could not find function "some.function"

This question comes up very regularly. When you get this type of error in R, how can you solve it?

The possible reasons for getting r could not find function error solved are as follows:

You did not spell the function name correctly.

The function is contained in a library which is not installed.

The library of the function is not loaded with either library() or require().

The version of R you are using is obsolete where that function does not exist.

You can use the following code to check the package in which the function is contained:

help.search("function_name") or ??function_name

 To find the function, use the following functions:

find(function_name)

    getAnywhere(function_name)

You can also use the findFn from the sos package to display the packages containing the function as follows:

    install.packages("sos") library("sos") findFn("function_name")

It will open a web page that will show all the libraries where the function is contained.

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