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:
# define mapper function | |
map <- function(list, fn) { | |
i <- 0; | |
len <- length(list); | |
result <- vector(length = len); | |
while (i < len) { | |
i <- i + 1; | |
result[i] <- fn(list[i]); | |
} |