Welcome to simmr!
simmr is a Bayesian stable isotope mixing model implemented in R which also uses JAGS. It is intended as a replacement to the SIAR package. You can install the development version of the package in R with the commands:
library(devtools)
install_github('andrewcparnell/simmr',build_vignettes =TRUE)
You can then load the package with
library(simmr)
A vignette (i.e. a simple user manual) is available via:
vignette('simmr')
If you want the official stable version of the package from CRAN then go to R and type:
install.packages('simmr')
You can then load the package and view the vignette with:
library(simmr)
vignette("simmr")