Aggregating Time Series Data with xts Objects in R

Understanding the Issue with xts Timestamps in R: A Guide to Minimizing Discrepancies

Converting Daily Data to Monthly Averages with xts in R: Two Efficient Approaches

Overcoming Date Assignment Challenges with XTS Objects in R

Converting Daily OHLCV Data to Monthly Expiration Values Using quantmod in R

Creating a Consistent Indicator in R Time Series Analysis Using na.locf and apply.daily