This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.
To capture the video (filesize: 19MB), using the free "QuickTime Player" application:
# Load the MNIST digit recognition dataset into R | |
# http://yann.lecun.com/exdb/mnist/ | |
# assume you have all 4 files and gunzip'd them | |
# creates train$n, train$x, train$y and test$n, test$x, test$y | |
# e.g. train$x is a 60000 x 784 matrix, each row is one digit (28x28) | |
# call: show_digit(train$x[5,]) to see a digit. | |
# brendan o'connor - gist.github.com/39760 - anyall.org | |
load_mnist <- function() { | |
load_image_file <- function(filename) { |
library(dplyr) | |
library(tidyr) | |
library(magrittr) | |
library(ggplot2) | |
"http://academic.udayton.edu/kissock/http/Weather/gsod95-current/NYNEWYOR.txt" %>% | |
read.table() %>% data.frame %>% tbl_df -> data | |
names(data) <- c("month", "day", "year", "temp") | |
data %>% | |
group_by(year, month) %>% |