Exercise

Fixing a broken index

The data stored in the index and the core data of a time series can be retrieved and manipulated as a vector in R. The index attribute is usually a date or time, but it can be any vector of unique values!

In this exercise, you'll manipulate the bad_card_prices time series, whose index has been incorrectly formatted and requires some work to convert to the standard ISO 8601 date format.

Using lubridate and zoo, you'll retrieve, update, and replace the index of the time series bad_card_prices.

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Retrieve the index of bad_card_prices and assign it to the object bad_index.