Posts

Aggregation library(magrittr) set.seed(1) ex_dat <- data.frame(group = rep(1:3, each = 2), y = rnorm(6), x = rnorm(6)) ex_dat ## …
data-manipulation

Introduction Structured Query Language (SQL) is a standard computer language for relational database management and data manipulation. …
data-manipulation

Classes and objects In Scala, a class is a blueprint for objects. Once you define a class, you can create objects from the class …
programming

Function Syntax Scala is a functional programming language, which means that functions are first-class citizens and you can pass them …
programming

Data types Boolean true or false Byte 8 bit signed value Short 16 bit signed value Char 16 bit unsigned Unicode character Int 32 bit …
programming

Configuration Set up global configuration variables if you haven’t done so $ git config --global user.name …
programming

Introduction The R programming language, along with RStudio, has become one of the most popular tools for data analysis as it contains …
programming

Introduction The ARIMA (autoregressive integrated moving average) models are also known as Box–Jenkins models. ARIMA models are applied …
statistics

Introduction State-space models were originally developed by control engineers, particularly for applications that require continuous …
statistics