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I have been looking for a solution to put my Google Scholar citations on my personal website for quite some time now. Some apps/gadgets seem to have existed to do so (e.g. citations-gadget), but none seem to be functioning today because of chan... [Read more...]

The RGLUEANN package is now available on GitHub at http://github.com/rogiersbart/RGLUEANN. The package provides an R implementation of the coupling between general likelihood uncertainty estimation (GLUE) and artificial neural networks (ANNs)... [Read more...]

The PMPATH particle tracking output, with a file format similar to the pathline output mode of MODPATH (see above), can be transformed easily into a GIF animation using R and ImageMagick (see below for a simple example).First of all, you... [Read more...]

The popular geostatistical software SGeMS has some options for working with non-point support (block) data through the BGeost set of algorithms by Yongshe Liu (see his PhD thesis), and published in Liu and Journel (2009). A specific but ... [Read more...]

AbstractVarious approaches exist to relate saturated hydraulic conductivity (Ks) to grain-size data. Most methods use a single grain-size parameter and hence omit the information encompassed by the entire grain-size distribution. This study compares two data-driven modelling methods—multiple linear regression and artificial neural networks—that use the entire grain-size distribution ... [Read more...]

Working on a paper, I ran into the problem of needing data from a graph that was not mine, and for which no underlying table was published. With today's software packages, it is however not very difficult to digitize a figure yourself. I remembered rea... [Read more...]

Here is a follow-up of my first post about using R. For our yearly KU Leuven Geology PhD Seminar (08-09/05/2012), I quickly pasted this script together from several examples I had run into in the past, as well as some things that I have been doing myse... [Read more...]

Here are some functions for reading and writing MODFLOW files from R. I hope to update this in the future!################################################################################### read.modflow.pval ############################################... [Read more...]

Quite some time ago now, I wrote this function to read some *.gef files into R. "gef" stands for Geotechnical Exchange Format. Details on this data format can be found at http://www.geffiles.nl/, as well as several software tools. I had a long list of ... [Read more...]

In short: R is a free intuitive programming language that is used by practitioners in a plethora of academic disciplines. Therefore, it is on the cutting edge, and expanding rapidly. It creates stunning visuals, works seamlessly together with LaTeX, has really good online documentation and the community is unparalleled. [1, 2, 3, 4] A ... [Read more...]

The *.gslib file format originates from the Geostatistical Software Library, but is also used in the follow-up of that software, i.e. the Stanford Geostatistical Modelling Software (SGeMS). Since not all geostatistical algorithms are implemen... [Read more...]