TableMetadataTools.jl

Tools for working with metadata of Tables.jl tables in Julia.

Currently it defines and exports:

• label, label!, labels, and findlabels functions for convenient work with column label metadata;
• caption and caption! functions for convenient work with table caption metadata;
• note and note! functions for convenient work with note metadata both on table and column level;
• unit (re-exported from Unitful.jl), unit!, and units functions for convenient work with column unit metadata;
• setmetadatastyle!, setcolmetadatastyle!, setallmetadatastyle! for group setting style for keys matching a passed pattern; usually needed when working with metadata that initially has :default style set and one wants it to have :note style (common when reading metadata from storage formats that do not support metadata style information);
• meta2toml and toml2meta! for storing and loading metadata in TOML format;
• dict2metadata!, dict2colmetadata! for setting table and column level metadata stored in a dictionary (e.g. earlier retrieved from some storage format or by using metadata or colmetadata functions).
• the @track macro for tracking operations applied to table and the tracklog function for convenient printing of tracking metadata.

Installation

This package is still in experimental phase (gathering users' feedback).

To install it write:

] add TableMetadataTools.jl

(] switches you to package manager mode in Julia REPL.)

Usage

All exported functions have docstrings explaining their behavior.

You can find a demo how the package can be used to work with metadata in /docs/demo.ipynb Jupyter Notebook.

To run it have your terminal in the /docs folder and do the following steps:

• start Julia with julia --project
• to make sure all packages are instantiated correctly run using Pkg; Pkg.instantiate() (this has to be done only the first time you run the demo)
• start Jupyter Notebook by writing using IJulia; notebook(dir=pwd()).
• open demo.ipynb notebook.