bobthecat

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dsparks

doInstall <- TRUE  # Change to FALSE if you don't want packages installed.
toInstall <- c("ggplot2", "reshape2", "RColorBrewer")
if(doInstall){install.packages(toInstall, repos = "http://cran.us.r-project.org")}
lapply(toInstall, library, character.only = TRUE)

# Generate a random matrix
# This can be any type of numeric matrix,
# though we often see heatmaps of square correlation matrices.
nRow <- 9
nCol <- 16

mattbaggott

library(ggplot2)
library(ggmap)

# blue bottle coffee shops in SF area
latitude <- c(37.782375,37.795933,37.776327,37.762033,37.795966,37.785936)
longitude <- c(-122.407567,-122.273128,-122.42328,-122.411603,-122.394025,-122.400761)
df2 <- data.frame(longitude=longitude,latitude=latitude)

# df to make map title on the water
dflabels <- data.frame(longitude=-122.678,

stephenturner

## See http://gettinggeneticsdone.blogspot.com/2013/06/customize-rprofile.html

## Load packages
library(BiocInstaller)

## Don't show those silly significanct stars
options(show.signif.stars=FALSE)

## Do you want to automatically convert strings to factor variables in a data.frame?
## WARNING!!! This makes your code less portable/reproducible.

hadley

Notes:

• I've tried to break up in to separate pieces, but it's not always possible: e.g. knowledge of data structures and subsetting are tidy intertwined.

• Level of Bloom's taxonomy listed in square brackets, e.g. http://bit.ly/15gqPEx. Few categories currently assess components higher in the taxonomy.

Programming R curriculum

Data structures

dmarcelinobr

# Data latest polls
polls = NULL
polls <- data.frame( rbind(
  Opinium = c(43, 47, 1156),
  Survation = c(44, 48, 1000),
  ICM =  c(41, 45, 1175)
))

# set up for decimals
polls[, 1:2] <- polls[, 1:2]/100

johnmyleswhite

> v <- c(1, 2, 3, 4)
> v[1]
[1] 1
> v[4]
[1] 4
> v[0]
numeric(0)
> v[5]
[1] NA
> v[-1]

jetsonhacks

For this process you will need:

• A host desktop or laptop computer running Ubuntu Linux 12.04. This may be a VM, I've used VirtualBox.
• Micro USB cable provided with the Jetson TK1 kit
• Jetson TK1 and power supply
• Optional: DB9 null modem cable if you want to use the serial console during boot

0. On your host computer open a Terminal, then create a directory to operate from, and switch to it. As an example:

mkdir ~/Grinch
cd ~/Grinch

jennybc

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. 😆

jmcastagnetto

require(RCurl)
require(XML)

# Let's make a special class
NISTBeaconResponse <- function (ts) {
    if(!is.integer(ts) &
       !inherits(ts, "POSIXct") &
       !inherits(ts, "POSIXlt")) {
        stop("We expected a unix timestamp as an integer or a POSIXct or POSIXlt value")
    }