sudo apt-get install python-numpy python-scipy
    sudo wget -O /usr/lib/python2.7/seglinreg.py https://raw.github.com/undera/segmented-linear/master/seglinreg.py
    sudo git clone https://github.com/undera/customfunctions.git /usr/lib/python2.7/customfunctions
    echo "from graphite.app_settings import *" | sudo tee -a /opt/graphite/webapp/graphite/local_settings.py
    echo "INSTALLED_APPS+=('customfunctions',)" | sudo tee -a /opt/graphite/webapp/graphite/local_settings.py
    sudo service apache2 restart