Jasper Schellingerhout's Blog

Jasper Schellingerhout

Technical Director at SigmaTEK Systems

Getting Started with R - Part 9: Lists and the [[]] operator

2 minute read

Lists allows us to keep a collection of various objects together

Getting Started with R - Part 8: Data frames - Construction, Subsetting and Structure

5 minute read

Vectors and matrices are designed to hold single types. When we need to mix data types in a tabular form we can use a data frame.

Getting Started with R - Part 7: Factors - Levels and Labels

5 minute read

Factors are like vectors but with values classed into levels. When vectors have a limited number of repeated values they fit the bill.

Getting Started with R - Part 6: Matrices - Captions

4 minute read

Adding Captions to matrices make them more readable and allows us to retain information when we subset the matrix.

Getting Started with R - Part 5: Matrices - Creating, Filling and Subsetting

6 minute read

Often we have the need to arrange data in a structure with rows and columns, or we need to represent a collection of vectors. R has a built-in matrix type th...