Subscript & Indexing Errors

$ operator on atomic vector

Matches: \$ operator is invalid for atomic vectors

WHAT THIS ERROR MEANS

You used $ to access a named element, but the object is a simple vector, not a list or data frame.

1. Check what type your object is with class().

2. Use [ ] indexing for vectors instead of $.

3. If you expected a data frame, check how the object was created.

BAD — THIS CAUSES THE ERROR

x <- c(a = 1, b = 2)
x$a

GOOD — CORRECT APPROACH

x <- c(a = 1, b = 2)
x["a"]

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