Calculating 2SD in iolite and Selection Matrices

A question that appears from time to time in iolite circles is how to report the 2SD instead of the default 2SE for each selection. This is something that we hope to automate in the future but, as is usually the case in iolite, the information is there, you just need to work out where…

Uncertainty propagation – how it works

We’ve had a bit of interest in propagation of uncertainties in Iolite, so I thought I’d try to do two things in this post and the next. In this post, I’ll have a go at describing our protocol for propagating uncertainties. There is a description of the method in Paton et al. (2010), but I’ll…

Using splines in a DRS

In this post I’m going to give a description of how someone making or modifying a DRS can take advantage of the DRS support functions included in Iolite for working with splines. I’ll use the existing “Sr_isotopes_REE” DRS as an example – it’s distributed with Iolite, which should make life easy for anyone that wants…