tomhopper

#' When plotting multiple data series that share a common x axis but different y axes,
#' we can just plot each graph separately. This suffers from the drawback that the shared axis will typically
#' not align across graphs due to different plot margins.
#' One easy solution is to reshape2::melt() the data and use ggplot2's facet_grid() mapping. However, there is
#' no way to label individual y axes.
#' facet_grid() and facet_wrap() were designed to plot small multiples, where both x- and y-axis ranges are
#' shared acros all plots in the facetting. While the facet_ calls allow us to use different scales with
#' the \code{scales = "free"} argument, they should not be used this way.
#' A more robust approach is to the grid package grid.draw(), rbind() and ggplotGrob() to create a grid of 
#' individual plots where the plot axes are properly aligned within the grid.

benmarwick

Commonly used scientific symbols in pandoc markdown

encoding is UTF-8, needs xelatex, like this:

---
output:
  pdf_document:
    latex_engine: xelatex
---

nutterb

#### Intended for use with the `redcapAPI` package
#' @name missingSummary
#' @aliases missingSummary.redcapApiConnection
#' @aliases missingSummary.redcapDbConneciton
#' @aliases missingSummary_offline
#' @export missingSummary
#' @export missingSummary.redcapApiConnection
#' @export missingSummary.redcapDbConnection
#' @export missingSummary_offline
#' 

jefferys

#===================================================
# Demo multi-function roxygen2 - three ways to do it
#===================================================

# This shows how things do work, including wierd corner cases, not
# how they should be done.  Most of the information comes from
#    http://r-pkgs.had.co.nz/man.html

#====================================================
# Demo multi-function roxygen2 page using @describeIn

PurpleBooth

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

tjmahr

library(ggplot2)

# preview a file that would be created by ggsave()
ggpreview <- function(...) {
  fname <- tempfile(fileext = ".png")
  ggsave(filename = fname, ...)
  system2("open", fname)
  invisible(NULL)
}

clauswilke

library(rlang)

# Functions with names ending in `_impl` take quoted expressions as input.
# This removes the need for constant quoting and unquoting
simplify_sum_impl <- function(e1, e2) {
  if (is_syntactic_literal(e1) & is_syntactic_literal(e2)) {
    return(eval_bare(e1 + e2))
  }
  
  if (e1 == 0) {

benmarwick

# Adapted from https://stackoverflow.com/a/7267364/1036500 by Andrie de Vries

# This is it: theme(axis.text.x = element_text(angle = 90, hjust = 1, vjust = 0.5))

library(ggplot2)

td <- expand.grid(
  hjust=c(0, 0.5, 1),
  vjust=c(0, 0.5, 1),
  angle=c(0, 45, 90),

dpseidel

Default ggplot2 aesthetics by geom.

geom	alpha	angle	colour	family	fill	fontface	height	hjust	lineheight	linetype	shape	size	stroke	vjust	weight	width	xmax	xmin	ymax	ymin
GeomAbline	NA		black							1		0.5
GeomAnnotationMap	NA		NA		grey20					1		0.5
GeomArea	NA		NA		grey20					1		0.5
GeomBar	NA		NA		grey35					1		0.

jenniferthompson

---
title: "Example Data Dictionary"
author: "Jennifer Thompson"
date: "11/1/2018"
output:
  html_document:
    theme: yeti
    code_folding: hide
---