pystac-ext-view
View extension for PySTAC
Decision gist · record as of 2026-08-14
Yes, if you are building or consuming STAC catalogs that include satellite or aerial imagery and need to standardize view geometry metadata. The low install friction, active maintenance, permissive license, and zero known vulnerabilities make it a safe choice. Install only if your workflow actually requires view geometry fields; base PySTAC alone is sufficient for simpler use cases.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later; pystac-core must be installed as a runtime dependency.
- Low friction install with a single runtime dependency on pystac-core.
- Active maintenance with a recent release and no known vulnerabilities.
License · maintenance · safety
Apache-2.0 (permissive) — Apache-2.0 permissive license allows commercial and private use with minimal restrictions.
last release 2026-08-10 (4 days) · last repo commit 2026-08-10 · 454 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 3,981,935 downloads/mo, #2,409 on PyPI
Alternatives
Verify before relying
pip install pystac-ext-view
import pystac
from pystac_ext_view import ViewExtension
item = pystac.Item(...)
view_ext = ViewExtension.ext(item, add_if_missing=True)
view_ext.off_nadir = angle_value- Whether this extension is required for your specific STAC use case or if base PySTAC suffices
- Compatibility with other PySTAC extensions you may need simultaneously
- Specific API methods and parameters for attaching view geometry fields to items
What it is and what it does
pystac-ext-view is a PySTAC extension package that implements the View Geometry Extension specification (v1.0.0). It provides a structured way to attach observation metadata to geospatial imagery items—specifically off-nadir angle, incidence angle, azimuth, and sun geometry information. This is useful when working with satellite or aerial imagery where the angle and direction of capture matter for analysis or processing.
The package is a thin, focused layer on top of pystac-core that handles serialization and validation of view-related fields according to the STAC specification. You install it alongside PySTAC when your catalog or item processing needs to record or read view geometry metadata. The package version tracks the extension specification version it targets, with post-releases for code updates that don't change the spec version.
Use it for
- Catalog satellite imagery with off-nadir and incidence angles for quality or processing decisions
- Record sun geometry in STAC items for shadow analysis or radiometric correction workflows
- Build STAC-compliant geospatial metadata pipelines that standardize observation angle capture
- Query or filter imagery collections by viewing geometry constraints in a STAC catalog
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are building or consuming STAC catalogs that include satellite or aerial imagery and need to standardize view geometry metadata.
The low install friction, active maintenance, permissive license, and zero known vulnerabilities make it a safe choice. Install only if your workflow actually requires view geometry fields; base PySTAC alone is sufficient for simpler use cases.
Install
pystac-ext-view on PyPI
Before you install
Low friction install with a single runtime dependency on pystac-core. Active maintenance with a recent release and no known vulnerabilities.
Requires Python 3.10 or later; pystac-core must be installed as a runtime dependency.
License in practice
Apache-2.0 permissive license allows commercial and private use with minimal restrictions.
Quickstart
pip install pystac-ext-view
import pystac
from pystac_ext_view import ViewExtension
item = pystac.Item(...)
view_ext = ViewExtension.ext(item, add_if_missing=True)
view_ext.off_nadir = angle_valueVerify before relying
- Whether this extension is required for your specific STAC use case or if base PySTAC suffices
- Compatibility with other PySTAC extensions you may need simultaneously
- Specific API methods and parameters for attaching view geometry fields to items
Package facts
| License | Apache-2.0 permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagepystac-core |
| Maintenance | Actively maintained 4 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 3,981,935 / month, #2,409 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: Apache Software LicenseNatural Language :: EnglishProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13 |
Evidence: pystac_ext_view-1.0.1-py3-none-any.whl
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See also pystac-ext-projection · pystac-ext-raster · pystac-ext-pointcloud · pystac-ext-sat · pystac-ext-mgrs · pystac-ext-sar · pystac-ext-xarray-assets · pystac-ext-eo · pystac-client · pystac