TestPackage

A small package to experiment with.

To build within RStudio, click the "Build" tab to right and then click "Install and Restart".

To run the example

library(TestPackage)
dat <- WWWusage
littleforecast(dat, nyears=100)

Try to add a function

Add hello.R to the R folder. Use File > New File > R Script to create a new script file.

#' Hello!
#' 
#' This just says hello.
#' @export
hello <- function(){ cat("HELLO") }

Rebuild the package and then type

hello()

Then try

?hello

Add a function with a new package

#' dplyr example
#' 
#' This adds a new function that needs {dplyr}
#' @param col which column to average
#' @export
irisaverages <- function(col = c("Sepal.Length", "Sepal.Width", "Petal.Length", "Petal.Width")){
col <- match.arg(col)
iris$col <- iris[[col]]
iris %>% dplyr::group_by(Species) %>% 
   dplyr::summarize(mean = mean(col))
}

Installing a package that is hosted on GitHub

To install, use this code. You might need to install the devtools package. For example,

devtools::install_github("RVerse-Tutorials/TestPackage")