SatViz

SatSim source code was developed under contract with AFRL/RDSM, and is approved for public release under Public Affairs release approval #AFRL-2022-1116.

The SatSimJS widget for Jupyter and Marimo.

Installation

pip install satviz

or with uv:

uv add satviz

Usage

SatViz loads SatSimJS from https://cdn.jsdelivr.net/npm/satsim@0.15.1/dist by default. Override satsim_base to point at a mirrored or locally served SatSimJS bundle that contains satsim.js and Cesium assets.

Jupyter

from satviz import SatSimJS
w = SatSimJS(height="1000px")
w

SatViz is a browser-embedded scenario widget. It does not wrap SatSimJS SimulationRuntime; applications that need authoritative sessions, runtime commands, or external control should run that SatSimJS runtime separately.

Marimo

import marimo as mo
from satviz import SatSimJS

widget = SatSimJS(height="900px")
w = mo.ui.anywidget(widget)
w

Example Notebook

From a checkout of this repository, install the development dependencies:

uv sync --group dev

The example notebook reads SATSIM_BASE from the environment and defaults to http://127.0.0.1:8080/dist for local development.

For local SatSimJS development, serve the SatSimJS repository root in a separate terminal:

cd $SATSIMJS_PATH
npm run build:cdn
npm run serve

Then open the notebook:

SATSIM_BASE=http://127.0.0.1:8080/dist uv run --group dev env PATH="$PWD/.venv/bin" jupyter lab examples/satviz_example.ipynb

Configuring fullscreen rectangle

Reserve space for headers/footers by customizing the overlay fullscreen rectangle from Python. Values can be numbers (pixels) or CSS strings.

from satviz import SatSimJS

w = SatSimJS(
    height="600px",                      # height when not fullscreen
    fullscreen_rect={
        "top": 64,                       # e.g., top banner height
        "left": 0,
        "width": "100vw",                # or e.g., "100vw"
        "height": "calc(100vh - 96px)",  # subtract top+bottom banners
        "zIndex": 10000,                 # optional overlay stacking order
    },
)
w

Release

To build and publish a release to PyPI:

1. Confirm satsim@0.15.1 has been published to npm/jsDelivr.

2. Bump version in pyproject.toml.

3. Build and validate locally:

   uv pip install --upgrade build twine
   uv run python -m build
   uv run twine check dist/*
   

4. Publish:

   • Manual: twine upload dist/* (requires a __token__ PyPI API token)