Error in x[[1]] : subscript out of bounds

ghz 8months ago ⋅ 69 views

I am working on the Chapter 5.2 example in the book: https://otexts.com/fpp3/simple-methods.html, getting errors when testing the code that the instructor is using:

  filter(!is.na(Bricks)) %>%
  model(
    Seasonal_naive = SNAIVE(Bricks),
    Naive = NAIVE(Bricks),
    Drift = RW(Bricks - drift()),
    Mean = MEAN(Bricks)
  ) ```

Here below is an extract of the error message from RStudio whenever I run the code:

> Error in x[[1]] : subscript out of bounds

Answers

It seems like there might be an issue with the Bricks data object that you are using in your code. The error message "subscript out of bounds" typically occurs when you are trying to access an element of a vector or list using an index that is out of range.

Here are a few things you can check and try to resolve the issue:

  1. Check Data Structure: Make sure that Bricks is a valid data object with the correct structure. You can use str(Bricks) or class(Bricks) to inspect the structure and class of the object.

  2. Inspect Data: Examine the first few rows of the Bricks data object to ensure that it contains the expected values and does not have any missing or invalid entries.

  3. Ensure filter() Works Correctly: The filter() function might not be filtering out NA values as expected. Ensure that there are no missing values in the Bricks data object or consider using alternative methods to handle missing values.

  4. Verify Variable Names: Double-check that the variable name Bricks matches the name of the variable in your dataset. Case sensitivity matters in R, so ensure that the variable name is spelled correctly and matches the case used in your dataset.

  5. Check Package Versions: Ensure that you are using the correct versions of the packages mentioned in the book. Sometimes, differences in package versions can lead to unexpected behavior.

  6. Inspect Previous Code: If the issue persists, inspect any previous code that might affect the Bricks object or the environment in which the code is running. Make sure that there are no conflicting assignments or modifications to the Bricks object earlier in your script.

By carefully checking these aspects, you should be able to identify and resolve the issue causing the "subscript out of bounds" error. If you're still unable to resolve the problem, providing more details about the Bricks object and any relevant code surrounding its creation and usage would be helpful for further diagnosis.

#r