Nuflux is a library for calculating atmospheric neutrino fluxes.
nuflux is packaged on conda-forge. Install with conda install -c conda-forge nuflux.
nuflux uses two different build systems: one based on setuptools and one based on meson. Which one you should use depends on whether you need to build C++ libraries against nuflux, or are content to use the Python bindings.
- cfitsio
- photospline
- boost_python
If you only need to use python you can install it directly through pip:
pip install --user git+https://github.com/icecube/nuflux
Note that this may fail if photospline and boost_python are installed in nonstandard locations, e.g. headers in /opt/toolsets/mystuff/include, libraries in /opt/toolsets/mystuff/lib. In this case, set the PREFIX environment variable to the root of your toolset installation:
PREFIX=/opt/toolsets/mystuff pip install --user git+https://github.com/icecube/nuflux
If you are running it in IceCube's cvmfs environment you will want to set PREFIX to the base of the cvmfs envionment which is stored in the envionment variable SROOT:
eval `/cvmfs/icecube.opensciencegrid.org/py3-v4.1.1/setup.sh`
PREFIX=${SROOT} pip install --user git+https://github.com/icecube/nuflux
If you want to use nuflux from a c++ program you need to install it with meson
git clone https://github.com/icecube/nuflux
cd nuflux
meson build
ninja -C build
sudo ninja -C build install
If boost and photospline are installed in nonstandard locations, you might need to let meson know with environment variables. Since photospline is detected with cmake you need to set CMAKE_PREFIX_PATH=/path/to/photospline. Boost uses BOOST_ROOT.
For example, in IceCube's cvmfs envionment you should do:
CMAKE_PREFIX_PATH=${SROOT} BOOST_ROOT=${SROOT}//spack/opt/spack/linux-centos7-x86_64/gcc-9.2.0spack/boost-1.71.0-gcw4axdhsqe44hdnbqiwxgfiinffreka/ meson setup . --prefix=/path/to/instal/to
the option -Ddata_path can be used to install to a directory outside of the PREFIX directory.
If you want to install to a read-only file system you can pass -Dinstall_data=False
You can build the documentation yourself using sphinx:
pip3 install sphinx
In the /nuflux/docs/ directory, run make with the kind of documentation you'd like, e.g.
make html
Run "make help" to see all available documentation formats.
From python:
import nuflux
flux = nuflux.makeFlux('honda2006')
nu_type=nuflux.NuMu
nu_energy=1e3 # in GeV
nu_cos_zenith = 0.5
print(flux.getFlux(nu_type,nu_energy,nu_cos_zenith))
from c++:
#include <nuflux/nuflux.h>
int main(){
boost::shared_ptr<nuflux::FluxFunction> flux;
flux=nuflux::makeFlux("honda2006");
double f=flux->getFlux(nuflux::NuMu,1e3,0);
std::cout << f << '\n';
}