Publications by Fabio Veronesi
R Video Tutorial for Spatial Statistics
Welcome everybody, this is a video tutorial that will try to teach you how to use R for spatial statistics and interpolation. I’m a PhD student in soil science and in particular my project is about digital soil mapping. During my work I often use R particularly for geostatstical interpolation. Despite R being a very powerful statist...
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3D Anisotropy parameters
Hello everyone, I’m trying to create a method for calculating the 5 parameters for the 3D anisotropy in an automatic way. Basically I created a loop for analysing the range of the horizontal variogram in every direction and extrapolating the maximum (for the angle p). Then it computes the vertical variogram in the direction of maximum contin...
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Script for Geostatistics with R
I received requests for the script used during the tutorial.All the material is available in the main page of the course.However, in order to facilitate the availability of the scripts to all the viewers of this blog I’ve put the link to donwnload them at the end of this post.This zip file contains 3 R scripts:– Lesson3: How to ha...
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Textural triangle plot in R
Hi,these days I’m working with soil textural data and one of the key point of these data is the presentation of the results.The best way is a old-school texture triangle!!!Because I like to do all my stuff in R, instead of opening draw software such as corel draw or adobe illustrator, I started looking at packages for this kind of p...
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Box Plot with ggplot2
Hi,in these days I’m creating lots and lots of box plot with ggplot2.The look of them is really good and you can change every bit of code so that you can customize the plot completely.Here is the code I’m using with a test data file to try it:BoxPlot.zipThe result looks like this: Related To leave a comment for the author, pleas...
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CoKriging with gstat – Videotutorial
This is the last lesson of the R Videotutorial for spatial statistics.It is all about cokriging in gstat. For this lesson I used the meuse dataset, available within gstat, for the references to this dataset take a look at the script.The videotutorial is available at this link:Lesson 6The script and the dataset for the lesson are avail...
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Variogram fit with RPanel
During the UseR 2011 conference I saw lots of examples of the use of RPanel to create a GUI in R. Yesterday, because I was a bit bored of the work I was doing I started thinking about this and I decided to try this package.My objective was to create a new panel with all the main setting for fitting a variogram model to an omnidirectio...
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Terrain Attributes with the raster package
Terrain attributes can be derived by elevation values on a small neighbourhood of each DEM point.The major attributes can be calculated from the derivatives of the topographic surface. These derivatives measure the rate of change in elevation in relation with the point location.In literature are available several methods to compute th...
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IntR – Interactive GUI for performing geostatistical analysis in R
In 2011 I presented at the UseR conference, held in Warwick (UK), a piece of software for easing the learning curve of R for geostatistical analysis. It is a very simple attempt to create an interactive interface in R, by using Python as GUI. From the GUI the user can easily create a script to perform some basic geostatistical analysi...
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Box-plot with R – Tutorial
Yesterday I wanted to create a box-plot for a small dataset to see the evolution of 3 stations through a 3 days period. I like box-plots very much because I think they are one of the clearest ways of showing trend in your data. R is extremely good for this type of plot and, for this reason, I decided to add a post on my blog to show how to creat...
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