pharminv 0.4

Requirements:

• BLAS & LAPACK

• libharminv-dev

• numpy

Installation:

Make sure that you have the requirements above, then

pip install pharminv

See below for help with installing harminv.

Usage:

harminv.invert contains the basic functionality of the harminv tool. This function should remain stable but the API elsewhere is subject to change.

import numpy as np
import harminv

time = np.linspace(0, 1, 1000)

signal = np.cos(2 * np.pi * time * 10) + np.cos(2 * np.pi * time * 20)

inversion = harminv.invert(signal, fmin=1, fmax=100, dt=0.001)

inversion.freq        # mode frequencies
inversion.decay       # decay rates
inversion.Q           # Q factor
inversion.amplitudes  # absolute amplitudes
inversion.phase       # phase shift

License:

harminv was written by Steven G. Johnson and is licensed under the GNU GPLv2+, copyright 2005 by the Massachusetts Institute of Technology.

This python interface to harminv is licensed under the standard BSD 3-clause license.

Installing libharminv

On Debian / Ubuntu this is available with

sudo apt-get install libharminv-dev

Otherwise you’ll need to build it yourself. Download the sources from here.

You need to install libharminv somewhere that python can find it at runtime. This should happen by default (installs to /usr/local), but you may need to change this to /usr:

PREFIX=/usr

Now install with the following:

./configure --with-pic --enable-shared --prefix=$PREFIX
make
make install

./configure --with-pic --enable-shared --prefix=$HOME/.local --with-blas=$HOME/.local/lib/libopenblas.so
make
make install

export LD_LIBRARY_PATH=$HOME/.local

CFLAGS="-I$HOME/.local/include -L$HOME/.local/lib" pip install pharminv