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Query and Transform

At its core, Rerun is a database. The OSS server is a local catalog that keeps catalog metadata in memory and reads data from RRDs with a footer on demand. It can therefore serve datasets larger than RAM, while Rerun Hub provides managed persistent storage for production use.

In this three-part guide, we explore a query workflow by implementing an "open jaw detector" on top of our face tracking example. This process is split into three steps:

  1. Explore a recording with the dataframe view
  2. Export the dataframe
  3. Analyze the data and send back the results

If you just want to see the final result, jump to the complete script at the end of the third section.