https://github.com/juliahep/edm4hep.jl

Julia interface to EDM4hep (generic Event Data Model for HEP experiments)
https://github.com/juliahep/edm4hep.jl

edm root-cern

Last synced: 5 months ago
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Julia interface to EDM4hep (generic Event Data Model for HEP experiments)

• Host: GitHub
• URL: https://github.com/juliahep/edm4hep.jl
• Owner: JuliaHEP
• License: apache-2.0
• Created: 2023-12-05T11:25:44.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2025-11-27T07:49:12.000Z (7 months ago)
• Last Synced: 2025-11-30T01:33:42.274Z (7 months ago)
• Topics: edm, root-cern
• Language: Julia
• Homepage: https://juliahep.github.io/EDM4hep.jl/
• Size: 153 MB
• Stars: 4
• Watchers: 1
• Forks: 6
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
[![Dev](https://img.shields.io/badge/docs-dev-blue.svg)](https:///JuliaHEP.github.io/EDM4hep.jl/dev/)

[![Build Status](https://github.com/JuliaHEP/EDM4hep.jl/workflows/CI/badge.svg)](https://github.com/JuliaHEP/EDM4hep.jl/actions)

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# EDM4hep in Julia

Prototype interface to [EDM4hep](https://github.com/key4hep/EDM4hep) (generic Event Data Model for HEP experiments part of Key4hep) for Julia with the goal to have very simple structures (isbits) with the purpose to evaluate its ergonomic design and implementation performance.

See recent presentations: 

- [FCC Software meeting 26/2/2024](https://indico.cern.ch/event/1351111/contributions/5687785/attachments/2807853/4899861/EDM4hep.jl-20240226.pdf)

- [EDM4hep developers 26/03/2024](https://indico.cern.ch/event/1398635/contributions/5879405/attachments/2826751/4938272/EDM4hep.jl-20240326.pdf)

- [CHEP24 Poster](https://indico.cern.ch/event/1338689/contributions/6016139/attachments/2951973/5189367/EDM4hep.jl-CHEP24.pdf)

> **Note:**

> The `main` branch of this project is work-in-progress towards the > version 1 of EDM4hep. To read current EDM4hep data files you need > to use registered versions of the package being the latest tag `0.4.2`, in the `v0-patches` branch. 

## Installation

The package has been registered in the General Julia registry therefore its installation is simply using the `Pkg` packager manager.

```

julia -e ‘import Pkg; Pkg.add(“EDM4hep”)’

```

## Getting Started

```julia

julia> using EDM4hep

julia> using EDM4hep.RootIO

julia> file = "root://eospublic.cern.ch//eos/experiment/fcc/ee/generation/DelphesEvents/winter2023/IDEA/p8_ee_ZZ_ecm240/events_000189367.root"

julia> reader = RootIO.Reader(file)

┌───────────────┬────────────────────────────────────────────────────────────────────────────────────────────┐

│ Attribute     │ Value                                                                                      │

├───────────────┼────────────────────────────────────────────────────────────────────────────────────────────┤

│ File Name(s)  │ root://eospublic.cern.ch//eos/experiment/fcc/ee/generation/DelphesEvents/winter202....     │

│ n of events   │ 100000                                                                                      

│ IO Format     │ TTree                                                                                      │

│ PODIO version │ 0.16.2                                                                                     │

│ ROOT version  │ 6.26.6                                                                                     │

└───────────────┴────────────────────────────────────────────────────────────────────────────────────────────

julia> events = RootIO.get(reader, "events");

julia> evt = events[1];

julia> recps = RootIO.get(reader, evt, "ReconstructedParticles");

julia> recps.energy[1:5]

5-element Vector{Float32}:

...

```