Subscript & Indexing Errors
Incorrect number of dimensions
Matches: incorrect number of dimensions
WHAT THIS ERROR MEANS
You used multi-dimensional indexing (like [row, col]) on an object that doesn't have that many dimensions.
HOW TO FIX IT
1. Check dimensions with dim(), nrow(), ncol().
2. Use single brackets for vectors: x[i] not x[i, j].
3. Convert to matrix or data frame if needed.
CODE EXAMPLES
BAD — THIS CAUSES THE ERROR
x <- 1:10 x[1, 2] # x is a vector, not a matrix
GOOD — CORRECT APPROACH
x <- 1:10 x[1] # single index for vectors
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