![Comparing Efficiency and Speed of `data.table`: Adding variables, filtering rows, and summarizing by group · TysonBarrett.com Comparing Efficiency and Speed of `data.table`: Adding variables, filtering rows, and summarizing by group · TysonBarrett.com](https://tysonbarrett.com/assets/RMD/2019-10-06-datatable_memory_files/fig2.png)
Comparing Efficiency and Speed of `data.table`: Adding variables, filtering rows, and summarizing by group · TysonBarrett.com
![Comparing Efficiency and Speed of `data.table`: Adding variables, filtering rows, and summarizing by group · TysonBarrett.com Comparing Efficiency and Speed of `data.table`: Adding variables, filtering rows, and summarizing by group · TysonBarrett.com](https://tysonbarrett.com/assets/RMD/2019-10-06-datatable_memory_files/fig1.png)
Comparing Efficiency and Speed of `data.table`: Adding variables, filtering rows, and summarizing by group · TysonBarrett.com
![Matt Dowle 🌻 on X: "Now is a good time to please test data.table-dev before release. Current grouping benchmark results for dev versions (including pandas, dplyr, dask, julia, spark) are at https://t.co/1JujkTWVfJ. # Matt Dowle 🌻 on X: "Now is a good time to please test data.table-dev before release. Current grouping benchmark results for dev versions (including pandas, dplyr, dask, julia, spark) are at https://t.co/1JujkTWVfJ. #](https://pbs.twimg.com/media/DupBVv8UUAA28Kc.jpg)