daattali

#+ spinme-chunk, eval = FALSE, echo = FALSE
.scriptName <- basename(sys.frame(1)$ofile)
.spinOutput <- knitr::spin(.scriptName, knit = TRUE)
stop(sprintf("Ignore this error - your output is ready at:\n%s",
             normalizePath(.spinOutput)),
     call. = FALSE)
#+ spinme-done, eval = TRUE, echo = TRUE

daattali

# There are two humans: `human` and `angry_human`. They only differ in the fact
# that angry humans have a frown on their face.

# Example code:
# dean <- human("Dean")
# ex <- angry_human("Ex")
# plot(dean)
# plot(ex)

# When plotting `dean`, RStudio shows me all the available parameters.

daattali

# rasmusab/beepr package is great for telling you when your R code finishes running.
# But if the code throws an error, the beep will never come, and you won't know that
# it finished running until you visually check.
# Solution: change the error handler to a failure beep.

# Example
foo <- function(success = TRUE) {
  if (!success) {
    stop("Error!")
  }

daattali

# Suppose a function has an argument "x". If a "child function" has multiple
# argument beginning with "x" and I want to pass the param "x" to its parent,
# I get error: `argument n matches multiple formal arguments`
# The reason this happens is clear, but at 3am my brain is firing blanks
# trying to find a solution.  Help!

library(magrittr)

foo <- function(x, ...) UseMethod("foo")
foo.parent <- function(x, n = 5, ...) n

daattali

daattali

n <- 50
a <- 2
b <- -3
sigSq <- 0.5
x <- runif(n)
norm <- rnorm(n, sd = sqrt(sigSq))
y <- a + b * x + norm
plot(x,y)
abline(a, b, col = "blue")

daattali

n <- 50
a <- 2
b <- -3
sigSq <- 0.5
x <- runif(n)
norm <- rnorm(n, sd = sqrt(sigSq))
y <- a + b * x + norm
plot(x,y)
abline(a, b, col = "blue")

daattali

Dean Attali's View of the World
========================================================

First, let's load the data and the required libraries (in this case, just lattice for plotting)  
**Note:** The data is available [here](http://www.stat.ubc.ca/~jenny/notOcto/STAT545A/examples/gapminder/data/gapminderDataFiveYear.txt)

```{r}
library("lattice")
gDat <- read.delim("gapminderDataFiveYear.txt")
```

daattali

Dean Attali
=================================
**STAT 545A hw 3**  
**Sept 22 2013**

Exercises done:
* Average GDP/cap in each continent when the data was first and last collected **(easy)**
* Trimmed mean statistics for life expectancy in each continent for every year **(fun)**
* Absolute and relative world population in each of the continents **(very fun)**
* A list of all countries that at some point had their population size decrease **(very fun)**

daattali

Dean Attali
=================================
**STAT 545A hw 3**  
**Sept 22 2013**

Exercises done:
* Average GDP/cap in each continent when the data was first and last collected **(easy)**
* Trimmed mean statistics for life expectancy in each continent for every year **(fun)**
* Absolute and relative world population in each of the continents **(very fun)**
* A list of all countries that at some point had their population size decrease **(very fun)**