# CDSHealpix
[](https://github.com/cds-astro/cds-healpix-python/actions/workflows/test.yml)
[](https://github.com/cds-astro/cds-healpix-python/actions/workflows/deploy_pypi.yml)
[](https://badge.fury.io/py/cdshealpix)
[](https://cds-astro.github.io/cds-healpix-python/)
This is a BSD-licensed HEALPix package which is wrapped around the [cdshealpix Rust crate](https://github.com/cds-astro/cds-healpix-rust).
[cdshealpix](https://pypi.org/project/cdshealpix/) is multi-platform and is currently deployed on PyPI for i686, x86_64 and aarch64 archs.
```bash
pip install cdshealpix
```
Or
```bash
conda install -c conda-forge cdshealpix
```
Reminder on conda activation/deactivation:
```bash
conda config --set auto_activate_base false
conda activate base
conda deactivate
```
Test:
```python
import cdshealpix
from cdshealpix import healpix_to_lonlat
lon, lat = healpix_to_lonlat(0, 0)
assert lon.rad[0] == 0.7853981633974483
```
## Features
* [Nested and Ring HEALPix notation](https://cds-astro.github.io/cds-healpix-python/api.html#cdshealpix) supported
* [Cone search](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.cone_search.html#cdshealpix.nested.cone_search)
* [Elliptical-Cone search](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.elliptical_cone_search.html#cdshealpix.nested.elliptical_cone_search)
* [Polygon search](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.polygon_search.html#cdshealpix.nested.polygon_search)
* [Bilinear interpolation](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.bilinear_interpolation.html#cdshealpix.nested.bilinear_interpolation)
* [lonlat_to_healpix](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.lonlat_to_healpix.html#cdshealpix.nested.lonlat_to_healpix) and [healpix_to_lonlat](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.healpix_to_lonlat.html#cdshealpix.nested.healpix_to_lonlat) supports numpy broadcasting
* Rust allows easy concurrency. A ``num_threads`` optional parameter can be used to allow parallelism. By default, concurrency is disabled.
* Get the [world vertices corresponding to an HEALPix cell](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.vertices.html#cdshealpix.nested.vertices)
* Get the [neighbours of an HEALPix cell](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.neighbours.html#cdshealpix.nested.neighbours)
## Documentation
Here is the link to the [documentation](https://cds-astro.github.io/cds-healpix-python/) for informations about how to use this package.
Raw data
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"author": "Matthieu Baumann <matthieu.baumann@astro.unistra.fr>, F.-X. Pineau <francois-xavier.pineau@astro.unistra.fr>",
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"description": "# CDSHealpix\r\n\r\n[](https://github.com/cds-astro/cds-healpix-python/actions/workflows/test.yml)\r\n[](https://github.com/cds-astro/cds-healpix-python/actions/workflows/deploy_pypi.yml)\r\n[](https://badge.fury.io/py/cdshealpix)\r\n[](https://cds-astro.github.io/cds-healpix-python/)\r\n\r\nThis is a BSD-licensed HEALPix package which is wrapped around the [cdshealpix Rust crate](https://github.com/cds-astro/cds-healpix-rust).\r\n\r\n[cdshealpix](https://pypi.org/project/cdshealpix/) is multi-platform and is currently deployed on PyPI for i686, x86_64 and aarch64 archs.\r\n\r\n```bash\r\npip install cdshealpix\r\n```\r\n\r\nOr\r\n\r\n```bash\r\nconda install -c conda-forge cdshealpix\r\n```\r\n\r\nReminder on conda activation/deactivation:\r\n\r\n```bash\r\nconda config --set auto_activate_base false\r\nconda activate base\r\nconda deactivate\r\n```\r\n\r\nTest:\r\n\r\n```python\r\nimport cdshealpix\r\nfrom cdshealpix import healpix_to_lonlat\r\nlon, lat = healpix_to_lonlat(0, 0)\r\nassert lon.rad[0] == 0.7853981633974483\r\n```\r\n\r\n## Features\r\n\r\n* [Nested and Ring HEALPix notation](https://cds-astro.github.io/cds-healpix-python/api.html#cdshealpix) supported\r\n* [Cone search](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.cone_search.html#cdshealpix.nested.cone_search)\r\n* [Elliptical-Cone search](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.elliptical_cone_search.html#cdshealpix.nested.elliptical_cone_search)\r\n* [Polygon search](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.polygon_search.html#cdshealpix.nested.polygon_search)\r\n* [Bilinear interpolation](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.bilinear_interpolation.html#cdshealpix.nested.bilinear_interpolation)\r\n* [lonlat_to_healpix](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.lonlat_to_healpix.html#cdshealpix.nested.lonlat_to_healpix) and [healpix_to_lonlat](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.healpix_to_lonlat.html#cdshealpix.nested.healpix_to_lonlat) supports numpy broadcasting\r\n* Rust allows easy concurrency. A ``num_threads`` optional parameter can be used to allow parallelism. By default, concurrency is disabled.\r\n* Get the [world vertices corresponding to an HEALPix cell](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.vertices.html#cdshealpix.nested.vertices)\r\n* Get the [neighbours of an HEALPix cell](https://cds-astro.github.io/cds-healpix-python/stubs/cdshealpix.nested.neighbours.html#cdshealpix.nested.neighbours)\r\n\r\n## Documentation\r\n\r\nHere is the link to the [documentation](https://cds-astro.github.io/cds-healpix-python/) for informations about how to use this package.\r\n\n",
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