davan690

A collection of README.md templates for projects in R, Ruby and Markdown

davan690

---
type: post
title: "Data Wrangling"
subtitle: "For Stoat control in Beech forest paper"
author: "Anthony Davidson"
date: '2019-05-16'
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Vignette Title}
  %\VignetteEngine{knitr::rmarkdown}

davan690

library(xml2)

page_post_links = function(
  page = 1, baseurl = 'https://www.rstudio.com/rviews',
  xpath = '//h2[@class="entry-title"]/a'
) {
  html = read_html(sprintf('%s/page/%d/', baseurl, page))
  xml_attr(xml_find_all(html, xpath), 'href')
}

davan690

## Curated stuff:
## * MetaCran: http://www.r-pkg.org/
## * List of Packages gathered by Garret G.: https://github.com/rstudio/RStartHere
## * List of popular packages https://awesome-r.com/
## * List of DataScience R tutorials https://github.com/ujjwalkarn/DataScienceR
## * List of machine elearning tutorials by subject: https://ujjwalkarn.github.io/Machine-Learning-Tutorials/

## Reproducible package management for R:
install.packages("devtools")
install.packages("tidyverse")

davan690

library(dplyr)
iris_char <- iris %>%
  mutate(Species=as.character(Species),
         char_column=sample(letters[1:5], nrow(iris), replace=TRUE))
sum(sapply(iris_char, is.character)) # 2

iris_factor <- iris_char %>%
  mutate_if(sapply(iris_char, is.character), as.factor)
# Sepal.Length  Sepal.Width Petal.Length  Petal.Width      Species  char_column 
# "numeric"    "numeric"    "numeric"    "numeric"  "character"  "character" 

davan690

davan690

t-test Shiny App

Base R code created by Jimmy Wong
Shiny app files created by Jimmy Wong

Cal Poly Statistics Dept Shiny Series 
http://statistics.calpoly.edu/shiny

davan690

There are packages for this now!

2017-08-03: Since I wrote this in 2014, the universe, specifically Kirill Müller (https://github.com/krlmlr), has provided better solutions to this problem. I now recommend that you use one of these two packages:

• rprojroot: This is the main package with functions to help you express paths in a way that will "just work" when developing interactively in an RStudio Project and when you render your file.
• here: A lightweight wrapper around rprojroot that anticipates the most likely scenario: you want to write paths relative to the top-level directory, defined as an RStudio project or Git repo. TRY THIS FIRST.

I love these packages so much I wrote an ode to here.

I use these packages now instead of what I describe below. I'll leave this gist up for historical interest. 😆

davan690

Hey there, apparently people are still using this Gist from 2013! It's out of date! Consult the Github docs.

Steps for Hosting a Website on GitHub

1. Create a GitHub account on github.com.
2. Download either [GitHub for Mac][1] or [GitHub for Windows][2], depending on your operating system. Open the app and log in using the account you just created.
3. (On Mac): After you login, click advanced and make sure that your name and email are correct. Then, click "Install Command Line Tools", just in case you want to start using the command line later in life.
4. Create a new repository in your GitHub application. Name it your-username.github.io. The name is very important. Note the folder that GitHub is saving the repository to. Make sure the "Push to GitHub?" box is checked.
5. Move your website's files into the folder that GitHub just created when you made the repository. IMPORTANT: Your homepage HTML file must be called "index.html", and it must exist in the top-level

davan690

3D Regression Shiny App

Base R code created by Irvin Alcaraz
Shiny app files created by Irvin Alcaraz

Cal Poly Statistics Dept Shiny Series 
http://statistics.calpoly.edu/shiny