American Musical and Dramatic Academy User Defined Function Questions
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10. Create a user-defined function that can clean up almost any
data frame using a loop. The function inputs are the dataset name
and the column indexes that we want to clean up. An example of
the function call might look like this:
function_name(x=mydata, col_idx=c(1,2,3))
The loop inside the function will take column indexes (from the
call inputs) and remove observations with empty values.
Hint: inside the loop, use:
new_df <– x[–which(is.na(x[ ,col_idx[i]]))]
Test your function with any dataset found on the
www.images.aqr.com/Insights/Datasets website.
