Now that the US Government shutdown is over, it is time to download NOAA weather daily summaries in bulk and store them somewhere safe so that at the next shutdown we do not need to worry.Below is the code to download data for a series of years:NOAA_Bu...

Now that the US Government shutdown is over, it is time to download NOAA weather daily summaries in bulk and store them somewhere safe so that at the next shutdown we do not need to worry.Below is the code to download data for a series of years:NOAA_Bu...

My second Shiny app is dedicated to data visualization.Here users can simply upload any csv or txt file and create several plots:Histograms (with option for faceting) Barchart (with error bars, and option for color with dodging and faceting) BoxPlots (with option for faceting) Scatterplots (with options for color, ...

Introduction This is a shiny app to visualize heat maps of Street Crimes across Britain from 2010-12 to 2018-01 and test their spatial pattern. The code for both ui.R and server.R is available from my GitHub at: https://github.com/fveronesi/StreetCrimeUK_Shiny Usage Please be aware that ...

Power analysis is extremely important in statistics since it allows us to calculate how many chances we have of obtaining realistic results. Sometimes researchers tend to underestimate this aspect and they are just interested in obtaining significant p-values. The problem with this is that a significance level of 0.05 does not ...

IntroductionIn the previous post I explored the use of linear model in the forms most commonly used in agricultural research.Clearly, when we are talking about linear models we are implicitly assuming that all relations between the dependent variable y and the predictors x are linear. In fact, in a ...

Assessing the accuracy of our model There are several ways to check the accuracy of our models, some are printed directly in R within the summary output, others are just as easy to calculate with specific functions. R-Squared This is probably the most commonly used statistics and allows us to ...

This post was originally part of my previous post about linear models. However, I later decided to split it into several texts because it was effectively too long and complex to navigate.If you struggle to follow the code in this page please refer to this post (for example for ...

After publishing my previous post, I realized that it was way too long and so I decided to split it in 2-3 parts. If you think something is missing in the explanation here it may be related to the fact that this was originally part of the previous post (http://...

As part of my new role as Lecturer in Agri-data analysis at Harper Adams University, I found myself applying a lot of techniques based on linear modelling. Another thing I noticed is that there is a lot of confusion among researchers in regards to what technique should be used in ...

This post would probably be the last in my series about merging R and ArcGIS. In August unfortunately I would have to work for real and I will not have time to play with R-Bridge any more.In this post I would like to present a toolbox to perform some ...

This post would probably be the last in my series about merging R and ArcGIS. In August unfortunately I would have to work for real and I will not have time to play with R-Bridge any more.In this post I would like to present a toolbox to perform some ...

In this post I will introduce another toolbox I created to show the functions that can be added to ArcGIS by using R and the R-Bridge technology.In this toolbox I basically implemented the functions I showed in the previous post about time series analysis in R.Once again I ...

In this post I will introduce another toolbox I created to show the functions that can be added to ArcGIS by using R and the R-Bridge technology.In this toolbox I basically implemented the functions I showed in the previous post about time series analy...

In this post I present my third experiment with R-Bridge. The plotting toolbox is a plug-in for ArcGIS 10.3.x that allows the creation of beautiful and informative plot, with ggplot2, directly from the ESRI ArcGIS console.As always I not only provide the toolbox but also a dataset to try ...

In this post I present my third experiment with R-Bridge. The plotting toolbox is a plug-in for ArcGIS 10.3.x that allows the creation of beautiful and informative plot, with ggplot2, directly from the ESRI ArcGIS console.As always I not only provide t...