ephemvis

CI PyPI Python License: MIT

Themeable SVG rendering for astrological chart data — the display layer that pairs with openephem (the calculation core). ephemvis turns a chart dict into a self-contained chart wheel and a triangular aspect grid.

The split is deliberate: openephem computes, ephemvis draws. The math core stays small and auditable; the visuals can be forked and restyled freely without touching (or destabilising) the calculations.

Install

pip install ephemvis            # pure renderer, zero runtime deps
pip install ephemvis[compute]   # also pulls openephem to compute charts

Use

from openephem import resolve, assemble          # needs ephemvis[compute]
from ephemvis import render_svg, render_aspect_grid_svg

chart = assemble(resolve(date=(1990, 5, 15), time=(14, 30),
                         place="New York, NY"))
open("wheel.svg", "w", encoding="utf-8").write(render_svg(chart, theme="prism"))
open("grid.svg",  "w", encoding="utf-8").write(render_aspect_grid_svg(chart, theme="prism"))

render_svg and render_aspect_grid_svg accept any dict with the openephem ChartResult shape (angles, cusps, bodies, aspects), so any engine that emits that shape can be rendered — ephemvis has no dependency on how the chart was computed.

Themes

light, dark, auto, and eight pastel "pretty" modes with a prism-halo ring: prism, twilight, aurora, opal, seafoam, meadow, dawn, blossom. See ephemvis.PALETTES.

The data contract

ephemvis reads the chart dict openephem's assemble() returns:

{
  "angles": {"asc": float, "mc": float, ...} | None,   # ecliptic longitude, degrees
  "cusps":  [float] (12) | None,                        # house cusp longitudes
  "bodies": {name: {"lon": float, "retro": bool}},      # ecliptic longitude, degrees
  "aspects": [{"a": name, "b": name, "aspect": str, "orb": float}],
  "warnings": [str],
}

MIT © 2026 Elizabeth Huston, Ph.D. and Noah Christian, Ph.D.
Contact: elpisastrology@gmail.com · elpisastrology.com and noahchristian@gmail.com

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Credits

Author: Elizabeth Huston, Noah Christian

GitHub Statistics

Data verified by PyPI on Jul 24, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

MIT
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Requires

Python >=3.10

Provides Extra

compute test

Tags

aspectarian astrology chart wheel natal chart openephem svg visualization

Classifiers

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