Error could not find function - R Programming

Question

I keep getting this error

Error: could not find function

I just don't understand why?

Comments

Hii
My query I practice rstudio some errors occur : could not find function... please tell me how to solve this problem!!

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Hey, @Anshu,

Did you write the name of your function correctly? Names are case sensitive. And do try the other solutions suggested  below.

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I'm having the same thing now with the function effect_plot() in ggplot2, and even with these answers can't work out the problem: I've copy and pasted the name of the function direct from the CRAN page so it's definitely not a misspelling, and I've checked the package is definitely loaded and up to date.

Any suggestions?

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Hi,

You may miss one package to install named jtools. Install this package in your environment and then try to use effect_plot() function.

install.packages('jtools')

Answer 1

This error usually occurs when a package has not been loaded into R via library, so R does not know where to find the specified function. It’s a good habit to use the library functions on all of the packages you will be using in the top R chunk in your R Markdown file, which is usually given the chunk name setup.

Answer 2

Yes, Just like @Maverik said, It happens when you have used a function that does not exist or in other words, no such function is available in R library.

One trick you can do is while writing the function, write the starting few characters and press ctrl+Enter buttons to see available functions as you type the function for better use and reduce errors.