Integration¶

ROOT RDataFrame¶

The HipoDataFrame extension provides a ROOT RDataSource for HIPO files, enabling analysis with RDataFrame:

#include "RHipoDS.hxx"

auto df = MakeHipoDataFrame("data.hipo");
auto h = df.Histo1D("REC::Particle_px");
h->Draw();

Column Naming¶

RDataFrame flattens HIPO bank columns using underscores:

• REC::Particle column pid becomes REC::Particle_pid
• REC::Event column startTime becomes REC::Event_startTime

Building with ROOT¶

ROOT support is auto-detected during build. Ensure ROOT is in your PATH:

source /path/to/root/bin/thisroot.sh
meson setup build

Python (hipopy)¶

A Python wrapper is available for basic HIPO operations:

import hipopy

reader = hipopy.open("data.hipo")
for event in reader:
    particles = event["REC::Particle"]
    pid = particles["pid"]
    px  = particles["px"]

Julia¶

using Hipo

reader = HipoReader("data.hipo")
for event in reader
    particles = event["REC::Particle"]
    # process...
end

Fortran¶

A Fortran wrapper provides basic read functionality:

program read_hipo
    use hipo_module
    implicit none

    type(hipo_reader) :: reader
    call reader%open("data.hipo")
    ! ...
end program

See the extensions/ directory for wrapper implementations.

pkg-config¶

After installation, use pkg-config to link against HIPO in other build systems:

# Get compiler flags
pkg-config --cflags hipo4

# Get linker flags
pkg-config --libs hipo4

CMake¶

find_package(PkgConfig REQUIRED)
pkg_check_modules(HIPO4 REQUIRED hipo4)

target_include_directories(myapp PRIVATE ${HIPO4_INCLUDE_DIRS})
target_link_libraries(myapp ${HIPO4_LIBRARIES})

Makefile¶

CXXFLAGS += $(shell pkg-config --cflags hipo4)
LDFLAGS  += $(shell pkg-config --libs hipo4)