lenspyx 2.0.5

lensed CMB sims pipe

# lenspyx

[](https://badge.fury.io/py/lenspyx)[](https://lenspyx.readthedocs.io/en/latest)[](https://travis-ci.com/carronj/lenspyx)

Curved-sky python lensed CMB maps simulation package by Julien Carron.

This allows one to build very easily lensed CMB simulations.

The package explicitly provides two methods for most basic usage. Check the [doc](https://lenspyx.readthedocs.io/en/latest). There is also an example notebook [demo_lenspyx](examples/demo_lenspyx.ipynb).

There are further tools for CMB lensing reconstruction (adjoint lensing etc.)

From v2 onwards (april 2023):

Lenspyx now essentially only wraps extremely efficient routines from [DUCC](https://gitlab.mpcdf.mpg.de/mtr/ducc) by M.Reinecke, with massive speed-ups and accuracy improvements (see Reinecke, Belkner & Carron 2023), in a way incompatible to v1 which is now abandoned.

Required is ducc0 version >= 0.30.0. For best performance, please refer to the [DUCC page](https://gitlab.mpcdf.mpg.de/mtr/ducc) for installation instructions making profit of compiler-specfic optimizations.

### Installation

Editable installation from source: clone the repo and

pip install –no-binary ducc0 -e ./ [–user]

From pypi

pip install –no-binary ducc0 lenspyx [–user]

The –-user is required only if you don’t have write permission to your main python installation.