Object not found: R

An infographic with some tips for managing the 'object not found' error in R.


Full text for those using screen readers:

R Error Frustration?

Object not found.

This means R couldn’t find something it went looking for – a function or a variable/data frame usually.

Have you tried?

  • Spelling errors. Some are obvious, some less so in a block of code e.g. lamdba for lambda. Tip: mark each place in your code block where the ‘unfound object’ is and then use “find” in the editor to make sure you’ve caught them all.
  • Where is your object defined? In which environment? Tip: draw a diagram that explains the relationships between your functions and then step through it line by line.
  • Is the object where R thinks it should be? Where did you tell R it was – a search path, a data frame or somewhere else? Can you physically check if the object is in that space?