This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
f1 <- function(x) (3*x - 40) / 10 | |
f2 <- function(x) (-20 - 2*x) / 2 | |
# f1 <- function(x) (24000 - 200*x) / 350 | |
# f2 <- function(x) (130 - x) / 2 | |
x_limits <- c(-10, 100) | |
########## Don't change anything below this line ######################### | |
g <- function(x) f1(x) - f2(x) | |
y_range <- range(0, f1(x_limits), f2(x_limits)) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#' This code checks the user's installed packages against the packages listed in | |
#' https://github.com/OuhscBbmc/RedcapExamplesAndPatterns/blob/master/utility/package-dependency-list.csv | |
#' These packages are necessary for most of the analyses run by the OUHSC BBMC (https://github.com/OuhscBbmc). | |
#' | |
#' CRAN packages are installed only if they're not already; then they're updated if available. | |
#' GitHub packages are installed regardless if they're already installed. | |
#' | |
#' If anyone encounters a package that should be on there, please add it to | |
#' https://github.com/OuhscBbmc/RedcapExamplesAndPatterns/blob/master/utility/package-dependency-list.csv | |
#' |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
library(tidyverse) | |
library(DBI) | |
library(odbc) | |
# connect to database | |
cn <- dbConnect(odbc::odbc(), driver = "ODBC Driver 13 for SQL Server", | |
server="MYSQLSERVER\\SQLEXPRESS", | |
database = "myTestDB", | |
Trusted_Connection="Yes") |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This post examines the features of [R Markdown](http://www.rstudio.org/docs/authoring/using_markdown) | |
using [knitr](http://yihui.name/knitr/) in Rstudio 0.96. | |
This combination of tools provides an exciting improvement in usability for | |
[reproducible analysis](http://stats.stackexchange.com/a/15006/183). | |
Specifically, this post | |
(1) discusses getting started with R Markdown and `knitr` in RStudio 0.96; | |
(2) provides a basic example of producing console output and plots using R Markdown; | |
(3) highlights several code chunk options such as caching and controlling how input and output is displayed; | |
(4) demonstrates use of standard Markdown notation as well as the extended features of formulas and tables; and | |
(5) discusses the implications of R Markdown. |