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isis_emcee is an S-Lang implementation of theaffine-invariant Markov chain Monte Carlo (MCMC) ensemble sampler proposed byGoodman & Weare (2010), implemented in Python (emcee) byForeman-Mackey et al. (2013), which has then been implemented in theInteractive Spectral Interpretation System (ISIS) in S-Lang byM. A. Nowak, modified by T. Beuchert, L. Corrales, and M. Kuehnel. The S-Lang MCMC hammer (emcee) is included in theRemeis ISISscripts.

1- Install HEASoft: downloadthe HEASOFT Software

gunzip -c heasoft6.19.tar.gz | tar xf -cd heasoft-6.19/BUILD_DIR/./configuremakemake install

2- Install ISIS:

wget http://space.mit.edu/cxc/isis/install-isis.shsetenv HEADAS /usr/local/headas/x86_64-unknown-linux-gnu-libc2.7/sh install-isis.sh DIR

3- Install ISISscripts: downloadthe Remeis ISISscripts

or obtain the developing version from the ISISscripts git-repository:

git clone http://www.sternwarte.uni-erlangen.de/git.public/isisscripts tar xfz isisscripts.tgz

Add it to to your personal~/.isisrc startup file

add_to_isis_load_path("/path/to/isisscripts/");

Load the ISISscripts in your S-Lang script:

require("isisscripts");

4- Install the S-lang MCMC Hammer:

Obtain the developing version from the github:

git clone https://github.com/mcfit/isis_emcee.git

Load the S-lang MCMC Hammer in your S-Lang script:

require("isis_emcee");