Articles by Fabio Veronesi

Accessing, cleaning and plotting NOAA Temperature Data

December 11, 2014 | Fabio Veronesi

In my previous post I said that my students are using data from NOAA for their research.NOAA in fact provides daily averages of several environmental parameters for thousands of weather stations scattered across the globe, completely free. In details, NOAA provides the following data: Mean temperature for the day ... [Read more...]

World Point Grid

December 10, 2014 | Fabio Veronesi

These days I am following a couple of master projects dealing with renewable energy potentials at the global scale. We wanted to try and compute these potential using only free data and see how far we could go.For wind speed there are plenty of resourc... [Read more...]

Merge .ASC grids with R

April 2, 2014 | Fabio Veronesi

A couple of years ago I found online a script to merge several .asc grids into a single file in R.I do not remember where I found it but if you have the same problem, the script is the following: setwd("c:/temp") library(rgdal) library(raster) # ... [Read more...]

Interfacing R and Google maps

July 30, 2013 | Fabio Veronesi

Introduction I couple of weeks ago I had an idea for a website where people can collaborate to create the first real Audio Atlas, using the power of the Google Maps API. The problem was that I do some programming in R but I did know very few things about ... [Read more...]

Box-plot with R – Tutorial

June 6, 2013 | Fabio Veronesi

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 ... [Read more...]

Variogram fit with RPanel

September 21, 2011 | Fabio Veronesi

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 ... [Read more...]

CoKriging with gstat – Videotutorial

April 13, 2011 | Fabio Veronesi

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 i... [Read more...]

Box Plot with ggplot2

April 12, 2011 | Fabio Veronesi

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 ... [Read more...]

Textural triangle plot in R

March 16, 2011 | Fabio Veronesi

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... [Read more...]

Script for Geostatistics with R

March 11, 2011 | Fabio Veronesi

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... [Read more...]

3D Anisotropy parameters

March 3, 2011 | Fabio Veronesi

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 ... [Read more...]
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