Installation

This page will guide you through installing onepower – either as purely a user, or as a potential developer.

Dependencies

onepower has a number of dependencies, all of which should be automatically installed as you install the package itself. You therefore do not need to worry about installing them yourself, except in some circumstances.

The list of major dependencies used by onepower is:

1. The halo mass function calculator, hmf

2. The halomod.

3. (Optionally) The Dark Emulator

The optional input fits files as used in Fortuna et al. 2021 are available here: Luminosity_redshift. Those are required for the IA predictions to agree, as they provide sample properties and fractions of red and blue galaxies. Similar data is required for any luminosity based IA predictions are to be used.

User Install

You may install the latest release of onepower using pip.

pip install onepower

This will install all uninstalled dependencies (see previous section). Note that this will not install Dark Emulator by default, due to its optional nature. To install the onepower with the Dark Emulator, you can do so by runnning:

pip install onepower[bnl]

Alternatively, for the very bleeding edge, install from the main branch of the repo

pip install onepower@git+https://github.com/KiDS-WL/onepower.git

Developer Install

If you intend to develop onepower, clone the repository:

git clone https://github.com/KiDS-WL/onepower.git

or your fork of it:

git clone https://github.com/<your-username>/onepower.git

Move to the directory and install with

pip install -e ".[dev]"

This will install all dependencies – both for using and developing the package (testing, creating docs, etc.). Again, see above about dependencies with conda if you are using a conda environment (which is recommended).