by Michy Alice | Jul 20, 2016 | Articles, R blog

Principal components regression (PCR) is a regression technique based on principal component analysis (PCA). The basic idea behind PCR is to calculate the principal components and then use some of these components as predictors in a linear regression model fitted...
by Veronica Giro | Jul 4, 2016 | Articles, R blog

If you want to compute arbitrary operations on a data frame returning more than one number back, use dplyr do()! This post aims to explore some basic concepts of do(), along with giving some advice in using and programming. do() is a verb (function) of dplyr. dplyr is...
by Enrico Pegoraro | Jul 4, 2016 | Articles, R blog

Introduction R is an object-oriented (OO) language. This basically means that R is able to recognize the type of objects generate from analysis and to apply the right operation on different objects. For example, the summary(x) method performs different operations...