# Fundamentals and usage

- [aPriori Fundamentals](/apriori-documentation-1/fundamentals-and-usage/apriori-fundamentals.md)
- [Data Formatting](/apriori-documentation-1/fundamentals-and-usage/apriori-fundamentals/data-formatting.md)
- [Cut a 3D scalar](/apriori-documentation-1/fundamentals-and-usage/apriori-fundamentals/cut-a-3d-scalar.md)
- [Filter a 3D scalar field](/apriori-documentation-1/fundamentals-and-usage/apriori-fundamentals/filter-a-3d-scalar-field.md)
- [Initialize a DNS field](/apriori-documentation-1/fundamentals-and-usage/apriori-fundamentals/initialize-a-dns-field.md)
- [Data visualization](/apriori-documentation-1/fundamentals-and-usage/apriori-fundamentals/data-visualization.md)
- [Cut a DNS field](/apriori-documentation-1/fundamentals-and-usage/apriori-fundamentals/cut-a-dns-field.md)
- [Filter a DNS field](/apriori-documentation-1/fundamentals-and-usage/apriori-fundamentals/filter-a-dns-field.md)
- [Machine Learning Tutorials](/apriori-documentation-1/fundamentals-and-usage/machine-learning-tutorials.md)
- [Data-Driven Closure for Turbulence-Chemistry interaction](/apriori-documentation-1/fundamentals-and-usage/machine-learning-tutorials/data-driven-closure-for-turbulence-chemistry-interaction.md)
- [Dynamic Data-Driven Smagorinky Closure for LES](/apriori-documentation-1/fundamentals-and-usage/machine-learning-tutorials/dynamic-data-driven-smagorinky-closure-for-les.md)