You can also download the.rsf file from the Wolves home page . I downloaded it here: https://drive.google.com/open?id=0B9JvG3_hgt4bHZ1YUF2bU9Jd1h0VHc . I also used the file as the basis for the mixsiar_script_wolves.R script below. Note that the Wolves have a different set of runs from those used in the MixSIAR tutorial and the.rsf file I downloaded from the Wolves' site has runs from a different time period than those in the tutorial. I have modified the script to make it work with the runs in the.rsf file I downloaded.
# Script that can be used to do a mixing model analysis
# Example script for use with the MixSIAR package
# R version 3.2.3 (2015-12-10)
# Copyright (C) 2015 The R Foundation for Statistical Computing
# Source: Paul Rosenberg, MIT, email@example.com
# Author: Paul Rosenberg, MIT, firstname.lastname@example.org