During the meeting we plan to have a tutorial on Gammapy.
This brief guide explains all the main steps needed to configure your machine for the Gammapy session at the VHEGAM meeting.
STEP 1 – Gammapy v1.3 installation
We suggest installing the latest stable version of Gammapy (v.1.3) through conda; in this way, you will also have all the required additional packages (numpy, scipy, Astropy, regions, click, PyYAML, pydantic). You can run:
curl -O https://gammapy.org/download/install/gammapy-1.3-environment.yml
conda env create -f gammapy-1.3-environment.yml
NB: sometimes this error may happen “curl: (60) SSL certificate problem: certificate has expired”.
To solve it launch:
curl -O -k https://gammapy.org/download/install/gammapy-1.3-environment.yml
conda env create -f gammapy-1.3-environment.yml
Finally activate this environment, by executing:
conda activate gammapy-1.3
You can check that installation was successfully by typing:
gammapy info
You should get something like the following:
System:
python_executable : /opt/anaconda3/envs/gammapy-1.3/bin/python
python_version : 3.11.10
machine : arm64
system : Darwin
Gammapy package:
version : 1.3
path : /opt/anaconda3/envs/gammapy-1.3/lib/python3.11/site-packages/gammapy
Other packages:
numpy : 2.1.3
scipy : 1.14.1
astropy : 6.1.6
regions : 0.10
click : 8.1.7
yaml : 6.0.2
IPython : 8.27.0
jupyterlab : 4.2.6
matplotlib : 3.9.2
pandas : 2.2.3
healpy : 1.18.0
iminuit : 2.30.1
sherpa : not installed
naima : 0.10.0
emcee : 3.1.6
corner : 2.2.3
ray : 2.39.0
Gammapy environment variables:
GAMMAPY_DATA : not_set
STEP 2 – Download notebooks
The data to be used for the hands-on can be downloaded from the google drive folder
https://drive.google.com/drive/folders/0AGYTElmXuGuWUk9PVA
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You are now ready for the Gammapy session!
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If you want to open the notebooks, you might want to use the jupyter-lab (or alternatively jupyter-notebook if you prefer) from command line:
jupyter-lab Notebook.ipynb
See you on Tuesday!
