User Guide Meerkat Basics Introduction to Data Structures Column DataPanel Data Selection Selecting Columns Selecting Rows Lambda Columns and Lazy Selection Lambda Columns Lazy Selection Overview of Column Types I/O Writing to Disk Reading from Disk Importing into Meerkat Exporting from Meerkat Map, Filter, and Update Map Filter Update Operations Merge Concat GroupBy Visualization Configuring Meerkat Configuring with YAML Configuring Programmatically Patterns and Anti-patterns Common Use Cases Creating Machine Learning Datasets with Meerkat Training Models with Meerkat Evaluating Models with Meerkat Performing Error Analysis with Meerkat Advanced Topics Copy vs. View Behavior Copies, Views, and Coreferences Behavior when Indexing Subclassing DataPanel and AbstractColumn Subclassing AbstractColumn Subclassing DataPanel