Counting and Aggregating with data.table: Efficient Data Manipulation in R

Selecting Values Below and After a Certain Value in a DataFrame

Comparing Values of a Certain Row with a Certain Number of Previous Rows in R's data.table

Summarizing Multiple Columns with dplyr: A Categorical Version

Understanding Data.table Joining Mechanism with Unkeyed Tables and Key Determination for Efficient Data Manipulation.

Mastering the <code>:=(</code> Operator for Efficient Data Manipulation in R

Subsetting Time Series Objects in R: 5 Effective Methods for Filtering Data

Optimizing Row Filtering with OR Conditions in Data.table

Using Variables in Formula Syntax with R: A Flexible Solution

Collapsing BLAST HSPs Dataframe by Query ID and Subject ID Using dplyr and data.table