bfit 4.6.4

B-NMR/B-NQR Data Fitting and Visualization

bfit

A Python application for the analysis of β-NMR and β-NQR data taken at TRIUMF.

Run Instructions

To run the graphical user interface, call bfit in a terminal.

bfit also provides the following classes and functions at the top level:

Functions

• bfit.pulsed_exp
• bfit.pulsed_biexp
• bfit.pulsed_strexp
• bfit.lorentzian
• bfit.bilorentzian
• bfit.quadlorentzian
• bfit.gaussian

Curve Fitting

• bfit.minuit
• bfit.global_fitter
• bfit.global_bdata_fitter
• bfit.fit_bdata

A full description of the API is here.

Setup

Dependencies needed pre-install

• Cython: pip3 install --user Cython
• numpy: pip3 install --user numpy
• Tkinter for python3: sudo apt-get install python3-tk (for example),
• python version 3.6 or higher

Install instructions

pip3 install --user bfit

Optional setup

You may want to tell bfit where the data is stored. This is done by defining environment variables BNMR_ARCHIVE and BNQR_ARCHIVE (for convenience add this to your .bashrc script). The expected file format is as follows:

/path/
    bnmr/
    bnqr/
        2017/
        2018/
            045123.msr

In this example, you would set BNQR_ARCHIVE=/path/bnqr/ to the directory containing the year directories.

If bfit cannot find the data, it will attempt to download the files from musr.ca according to the defaults set in the bdata package.