content_image/787571.jpg
<img src='content_image/787571.jpg'>

See also: 

$let , $redact , $map 

## 7.5 Additional Resources 

• MongoDB Analytics: Learn Aggregation by Example: Exploratory Analytics and Visualization Using Flight Data 25 

• MongoDB for Time Series Data: Analyzing Time Series Data Using the Aggregation Framework and Hadoop 26 

• The Aggregation Framework 27 

• Webinar: Exploring the Aggregation Framework 28 

• Quick Reference Cards 29 

