The recommended way to install Gammapy is to install the Anaconda distribution from https://www.anaconda.com/download/ and then to install the Gammapy and it’s dependencies by executing these commands in a terminal:
curl -O https://gammapy.org/download/install/gammapy-0.15-environment.yml conda env create -f gammapy-0.15-environment.yml
On Windows, you have to open up the conda environment file and delete the
healpy. Those are optional dependencies that
currently aren’t available on Windows.
This creates a conda environment called
gammapy-0.15 which you can activate via:
conda activate gammapy-0.15
Note that you have to execute that activation command (but not the environment cration command) every time you open a new terminal window, because the default with conda is the base environment, which doesn’t have Gammapy installed.
To check your Gammapy installation, you can use this command:
Congratulations! You are all set to start using Gammapy!
The following pages contain detailed information about Gammapy dependencies in various installation options: