Position-Velocity Diagram Extractor
Full docs are available here
Tool to slice through data cubes and extract position-velocity (or other) slices.
There are a few utilities related to header trimming & parsing. Otherwise, there’s one main function, pvextractor, that takes a data cube and a series of points and returns a PV array. It is based on scipy’s map_coordinates.
For an example use case, see [this notebook] (http://nbviewer.ipython.org/urls/raw.github.com/radio-astro-tools/pvextractor/main/examples/IRAS05358Slicing.ipynb) (for a permanent, compiled version, look here)
Minimal Install Instructions
pip install pvextractor
To install the latest development version instead:
pip install https://github.com/ericmandel/pyds9/archive/main.zip pip install https://github.com/radio-astro-tools/spectral-cube/archive/main.zip pip install https://github.com/radio-astro-tools/pvextractor/archive/main.zip
The pvextractor GUI
Run it like this:
from pvextractor.gui import PVSlicer
pv = PVSlicer('L1448_13CO.fits')
pv.show()
Click to select “control points” along the path, then press “enter” to expand the width of the slice, then click. Optionally, “y” will show the exact regions extracted.
Using pvextractor in ds9
There is a python script that will be installed along with pvextractor. You can invoke it from the command line, but the preferred approach is to load the tool into ds9. First, determine the path to ds9_pvextract.ans; it is in scripts/ds9_pvextract.ans. Then start up ds9 with the analysis tool loaded
ds9 -analysis load /path/to/pvextractor/scripts/ds9_pvextract.ans &
Then load any cube in ds9, draw a line, and press ‘x’ or press “PV Extractor” in the menu.
Example DS9 use
Build status
3 maintainers
Metadata
3 maintainers
Release files for pvextractor 0.5
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| pvextractor-0.5.tar.gz | 1.5 MB | With provenance | Details for pvextractor-0.5.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| pvextractor-0.5-py3-none-any.whl | Python 3 | none | any | Details for pvextractor-0.5-py3-none-any.whl |
Total release size: 1.5 MB
Release files / pvextractor-0.5.tar.gz
| Download URL | pvextractor-0.5.tar.gz |
|---|---|
| Size | 1.5 MB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
04019430bca5e66af762dd21f230dd292c87c5934a64774912c18da70a071ea2
|
|
BLAKE2b-256 checksum How to use checksums |
f7f1b88ee8ffc9bf96edea639203e1c337883145883e31423753916d29ab9eff
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 17, 2026.
Transparency logRelease files / pvextractor-0.5-py3-none-any.whl
| Download URL | pvextractor-0.5-py3-none-any.whl |
|---|---|
| Size | 31.1 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
ded2cb5ba775b63fdfc2fd3d96712f92e65492e6e63bdab908b49ca54b0382be
|
|
BLAKE2b-256 checksum How to use checksums |
71e6ba9bc25a645f781e17f3d256cbfedc59ebd5746b9373c9c312c3e35cc514
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 17, 2026.
Transparency logSecurity for pvextractor 0.5
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
Full provenance
All 2 files in this release have been uploaded with provenance metadata.
Attestation for pvextractor-0.5.tar.gz
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 17, 2026.
Transparency logA note on package security
PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.
To learn more about protecting yourself from malicious actors, visit our package security documentation.
