## MuDiSc: __Mu__lti-__Di__mensional __Sc__aling with `Matlab` and `R`

`Matlab`(Section 1) and

`R`(Section 2). Further detail about these methods is provided in an accompanying paper:

Vermeesch, P., 2013, Multi-sample comparison of detrital age distributions.
Chemical Geology, v.341, 140-146. doi:10.1016/j.chemgeo.2013.01.010.

#### 1. A user-friendly Matlab-GUI:

Downloads: - MuDiSc.zip - a Matlab GUI to generate MDS and QQ plots of detrital age distributions. - DZages.xls - example input file for MuDiSc containing the U-Pb dataset from China. |

#### 2. MDS (and more!) with the `provenance` package in `R`:

The

`DZages.Rdata`dataset needed to run the example code in the

*Chemical Geology*paper can be downloaded from the bottom of this page. However, for practical purposes, it is more convenient to use the newly released

`provenance`package. In addition to ordinary Multidimensional Scaling of detrital zircon age distributions, this package performs a host of other tasks as well, including MDS/PCA analysis of compositional data such as heavy mineral counts, Procrustes Analysis and 3-way MDS, and data visualisation as Kernel Density Estimates, Cumulative Age Distributions, pie charts and ternary diagrams. For further details about this comprehensive toolbox, see http://provenance.london-geochron.com.

Downloads: - DZages.Rdata - input data for the R code in the paper - DZages.csv - .csv-file with the same data - HMdata.csv - .csv-file with the heavy mineral data - BigData.Rdata - 5-proxy dataset from Namibia |