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@emitanaka
emitanaka / collapseoutput.js
Created July 20, 2019 04:43
Collapsible Code Output for `xaringan`
<script>
(function() {
var divHTML = document.querySelectorAll(".details-open");
divHTML.forEach(function (el) {
var preNodes = el.getElementsByTagName("pre");
var outputNode = preNodes[1];
outputNode.outerHTML = "<details open class='output'><summary>Output</summary>" + outputNode.outerHTML + "</details>";
})
})();
(function() {
@batpigandme
batpigandme / belchers_listcol.R
Last active March 5, 2023 17:39
Example of using `tidyr::hoist()`.
library(tidyverse)
family <- list(
list(
"name" = "Bob",
"age" = 46,
"mother" = NA,
"father" = "Big Bob",
"siblings" = list(NA),
"children" = list("Tina", "Gene", "Louise"),
@mpjdem
mpjdem / game_of_life.R
Last active October 7, 2021 16:08
Conway's game of life in R, visualised in the terminal
library(data.table)
library(keypress)
## Create the universe. Well, sort of.
dims <- c(49, 49)
universe <- CJ(x = seq(dims[1]), y = seq(dims[2]), k = 1, cell = FALSE)
universe[, cell := sample(c(FALSE, TRUE), prod(dims), TRUE)]
## Neighbourhood to consider for each cell
neighbours <- CJ(xd = -1:1, yd = -1:1, k = 1)[xd != 0 | yd != 0]
@mrecos
mrecos / leaflet_flyTo_Shiny.r
Last active October 1, 2020 19:14
A (mostly) minimal example of using sidebar drop downs to 1) filter counties within states, and 2) `flyTo` the centroid of the selected state in shiny + leaflet
library(shiny)
library(shinydashboard)
# devtools::install_github("nik01010/dashboardthemes")
library(dashboardthemes)
library(tidyverse)
library(sf)
library(leaflet)
library(usmap) # us counties and states as table
library(leaflet)
@moodymudskipper
moodymudskipper / vassign.R
Last active June 13, 2022 21:54
vassign
makeActiveBinding("v", local({
e <- NULL
count <- 1
function(value) {
# increment or reinitialize counter
exec_env <- sys.frame(-1)
if(identical(e, exec_env)) {
count <<- count + 1
} else {
@Enchufa2
Enchufa2 / pong.R
Last active July 24, 2022 12:04
Pong in R
# remotes::install_github("coolbutuseless/eventloop")
Pong <- R6::R6Class(
"pong",
public = list(
initialize = function(width=10, height=7, speed=0.02) {
require(grid)
private$width <- width
private$height <- height