Deedle

Deedle is an open-source data manipulation library for the .NET platform, with a primary focus on data science tasks in F# and other .NET languages. It provides efficient, flexible structures for handling tabular data and time series within .NET applications.

Core concepts include Frame and Series. A Frame is a two-dimensional labeled container of data, with rows and columns identified by labels, while a Series represents a single labeled vector. TimeSeries is a specialization for time-indexed data. Deedle supports functional-style operations, composition of transformations, and robust handling of missing values. It includes features for indexing, slicing, joining and aligning data, grouping and aggregation, and reshaping frames and series.

Typical workflows involve cleaning, transforming, and aggregating data, performing time-based analyses, and preparing data for visualization or modeling. Deedle integrates with the .NET ecosystem, allowing use from F#, C#, and other languages, and can be used in interactive environments and scripts.

Development and distribution: Deedle is maintained as an open-source project with a public repository and documentation. It runs on modern .NET runtimes across Windows, Linux, and macOS, and is commonly used in notebooks and data-processing pipelines that run on the .NET platform.