hgg-core

Core of hgg: VisualSpec / PlotData / Layout / Render primitives

Stackage Nightly 2026-08-13:	0.2.0.0
Latest on Hackage:	0.2.0.0

BSD-3-Clause licensed by Toshiaki Honda

Maintained by [email protected]

This version can be pinned in stack with:hgg-core-0.2.0.0@sha256:1b6582bede6ac4e7aa0077159de2d21517452e9fe8aca5ea39f8d910c3346cee,3612

Depends on 6 packages(full list with versions):

Used by 3 packages in nightly-2026-08-13(full list with versions):

The backend-independent core of hgg — plot spec / data / layout / render primitives.

Depends only on base / vector / text / containers. Backends (SVG / PDF / Rasterific / LaTeX / …) are implemented as separate packages.

Module structure

Module	Role
`Graphics.Hgg.Spec`	`VisualSpec` ADT (declarative spec for every chart kind)
`Graphics.Hgg.Data`	`PlotData` ADT (Vector-based, DataFrame-independent)
`Graphics.Hgg.Layout`	`computeLayout` pure function (viewport / scale / axis)
`Graphics.Hgg.Render`	`Primitive` ADT + `Renderer` class (backend interface)
`Graphics.Hgg.Easy`	matplotlib-style `scatter` / `bar` / `line` / `histogram`

See the repository README for a gallery and getting-started guide.

Breaking: theme constructors ThemeCanvas / ThemeCanvasDark renamed to ThemeParchment / ThemeParchmentDark.
Generalized coordinate systems: ternary coordinates (ternaryScatter / ternaryLine marks, encZ channel), polar start angle / direction / rotation, polygon clipping; crossbar renders through the projection layer (correct in polar coordinates).
Theme extensions (cowplot parity): base-size scaling, font family, plot margins, subplot relative widths and tags, three new presets; grid and axis line widths are now theme-controlled.
Fixes: facets now split inline (non-DataFrame) layer data; boxplot outliers are included in the axis domain.
Bilingual (English / Japanese) haddock across the public API.

First public release on Hackage.

Backend-independent core: VisualSpec / layers / marks / encoding / scales / themes.
Depends only on base / vector / text / containers.