SIAR v4.2.4.XXXX

Stable Isotope Analysis in R - package


rstudio mirror downloads rstudio mirror downloads DOI

Parnell, A.C., Inger R., Bearhop, S. & Jackson, A.L. 2010. Source partioning using stable isotopes: coping with too much variation. PLoS ONE, 5(3), e9672 . doi

Version 4.2.4.XXXXX * SIAR is now defunct. * Please use the packages SIBER for fitting of ellipses and convex hulls. * Please use the package MixSIAR for fitting mixing models which offers the latest suite of options for including linear covariates and hierarchical random effects among other new developments. You may also use the package simmr for fitting simple or lite versions of mixing models.

Version 4.2.4 add 'color.src' argument (with 20 different colors set as default) to 'siarplotdatawrapper' and 'siarplotdata' functions, while user can set the colors for source items by themselves. changed the output in 'siarhdrs' function from c("Low 95% hdr","High 95% hdr","mode","mean") to c("Mean", "SD", "2.5%", "5%", "25%", "50%", "75%", "95%", "97.5%") as default . * add Return value for 'siarhdrs' function.

Version 4.2.3 20-February-2018 bugs from incorporated. bugs on labelling of credible intervals output by siarproportionbysourceplot and siarproportionbygroupplot fixed.

Version Hotfix 28-March-2017 * update to to the package spatstat broke siar. This is swapped to spatstat.utils in a hotfix on the master branch.

Version 4.2.2 fixes: * bug in call to .C() for the single group of consumer data arising due to dataframe not being automatically coerced to double format. The coersion is now as.double(as.matrix( This addresses the message error: not a matrix

Version 4.2.1 fixes: bug in SIBER routines in Linux distirubutions on call to bayesm:rmultireg via siar:bayesMVN that was spotted by siardensityplot()'s main="my awesome graph" argument now works. linewidths in all .Rd files now within 90 char limit for pdf creation. * cleaned up some instances of quartz() calls that are not used in any case.

Installing SIAR

You can install directly from GitHub if you have the devtools package installed. But you really shouldn't. This package is no longer supported, nor encouraged, and it is only

    install_github("andrewljackson/[email protected]", build_vingettes = TRUE)

Tutorials, help and assistance

There is a range of materials available for getting started with SIAR with links to example files, video podcasts, tutorials etc... available from There are also more files and examples at and i will consolidate these various files into this git repo and/or accompanying git website at some point in the future. Note also that I am currently working on a major update to SIBER which will see it removed from the SIAR package at some point


Thanks to Natalie Cooper for help with Github installation instructions and general Git advice!


Jackson, A.L., Parnell, A.C., Inger R., & Bearhop, S. 2011. Comparing isotopic niche widths among and within communities: SIBER – Stable Isotope Bayesian Ellipses in R. Journal of Animal Ecology, 80, 595-602. doi

Parnell, A.C., Inger R., Bearhop, S. & Jackson, A.L. 2010. Source partioning using stable isotopes: coping with too much variation. PLoS ONE, 5(3), e9672 . doi

AndrewLJackson/siar documentation built on May 5, 2019, 5:59 a.m.