Atelier RGeostats

Une journée d'introduction au package RGeostats.

Course Outline

This paragraph gives a coarse descritpion of the program covered during this day.

1. Introduction to RGeotats basic concepts.
2. The Variogram and its extension (variogram cloud, variogram map) and the Model selection (fitting procedures)
3. Estimation using an optimal linear predictor: Kriging (simple, ordinary, intrinsic) and its extension (cross-validation). Neighborhood specification.
4. Multivariate Geostatistics. Bivariate statistics (covariance, linear model ...) and multivariate spatial tools (cross-variogram and cross-covariance). Linear Model of Coregionalization. Multivariate estimation technique (Co-Kriging) and its extensions (collocated Co-Kriging, External Drift concept …). Factorial Kriging Analysis.
5. Simulations. Spatial law and Gaussian random function (anamorphosis). Conditional laws. Gibbs technique; Sequential Gaussian Simulation (SGS) algorithms; Turning bands algorithm; Stochastic Partial Derivative Simulations.
6. Simulations of (one or several) categorical variables. Principles and inference of the parameters of the spatial characteristics. Using one or several underlying Gaussian Random Functions (PluriGaussian). Conditioning.
7. New avenues: SPDE

 What should be done before attending

I recall that you must bring your own laptop on which you will use the RGeostats package.

In order to have a good startup, please be sure to install:

• the R package
• the RStudio package
• the RGeostats package

For RGeostats, you can refer to the documentation provided at http://rgeostats.free.fr/forum/viewtopic.php?f=2&t=48.

As mentionned there, you can download the current version (11.2.9 minimum) for your favorite Operating System from this site.

During the course, a cloud will  be used to download some documents, scripts and slide shows. Note that the last software version is also available from this cloud (in Software directory).

Instructors

• Didier RENARD
• Nicolas DESASSIS

The course will be held on Wednesday Septh 18th, from 9h30 to 17h30