vizath

There is not a lot of doc or posts about making an headless renderer with webgl support. Here are few of my findings

I tried things on Heroku, but I was not able to make anything work.

Next, I tried EC2 t2.micro, only to find out that OpenGL needs a graphic card to execute (sure, there are things like mesa that I didn't tried, but it looked like I needed to build Chrome and I didn't want to go that way).

The only easy solution that I found was AWS EC2 GPU Instances. They are pretty much overpriced for what I'm trying to acheive, but it worked. You need to use an AMI that support the Nvidia GRID thing. eg https://aws.amazon.com/marketplace/pp/B00FYCDDTE and its CentOS.

Slimer need Firefox and Firefox need shared libraries that we need to install (we will use a custom repo).

robertjpayne

#import <Foundation/Foundation.h>
#import "RCTBridgeModule.h"

#define RCT_EXTERN_MODULE(objc_name, objc_supername) \
  RCT_EXTERN_REMAP_MODULE(objc_name, objc_name, objc_supername)

#define RCT_EXTERN_REMAP_MODULE(js_name, objc_name, objc_supername) \
  objc_name : objc_supername \
  @end \
  @interface objc_name (RCTExternModule) <RCTBridgeModule> \

vicapow

This demo uses d3.layout.force() to calculate the node positions and then passes those to webGL to render them on the GPU.

mgold

This is a fork of Mike Bostock's Multi-Series Line Chart, which adds circles along the line for each data point. The circles help anchor us to the real datapoints (rather than extrapolations) when comparing across lines.

But this is really an exercise in nested selections, leveraging selections as groups. The data consists of multiple lines, which each have multiple data points. We call .data twice: first with the data for all cities, binding the array for each city as a single datum. This is good enough for D3's line generators but not for placing circles. So we selectAll circles from the merged enter-update selection, and then bind the data for each line using a function, which is passed each datum from the prior join. This step produces a new data join, and you need to do it even if the function you pass is the identity. Since there are no circles, we skip straight to the enter selection and append them. Then we assign them x and y positions based on the accessor

wincent

2015-01-29 Unofficial Relay FAQ

Compilation of questions and answers about Relay from React.js Conf.

Disclaimer: I work on Relay at Facebook. Relay is a complex system on which we're iterating aggressively. I'll do my best here to provide accurate, useful answers, but the details are subject to change. I may also be wrong. Feedback and additional questions are welcome.

What is Relay?

Relay is a new framework from Facebook that provides data-fetching functionality for React applications. It was announced at React.js Conf (January 2015).

jonathantneal

Local SSL websites on macOS Sierra

These instructions will guide you through the process of setting up local, trusted websites on your own computer.

These instructions are intended to be used on macOS Sierra, but they have been known to work in El Capitan, Yosemite, Mavericks, and Mountain Lion.

NOTE: You may substitute the edit command for nano, vim, or whatever the editor of your choice is. Personally, I forward the edit command to Sublime Text:

alias edit="/Applications/Sublime\ Text.app/Contents/SharedSupport/bin/subl"

mbostock

license: gpl-3.0
redirect: https://observablehq.com/@d3/map-zooming

ccagrawal

# For each day, find the appropriate Poisson Parameter and use it to calculate the likelihood of the actual view count
# Likelihood = P(D|H)

Calc.Likelihood <- function(changes, poissons, stats, periods) {
  likelihood <- 0
  for (day in 1:nrow(stats)) {
    proceed <- FALSE
    period <- 1
    while (!proceed) {
      if (day < changes[period]) {

gdamjan

What

A lot of times you are developing a web application on your own laptop or home computer and would like to demo it to the public. Most of those times you are behind a router/firewall and you don't have a public IP address. Instead of configuring routers (often not possible), this solution gives you a public URL that's reverse tunnelled via ssh to your laptop.

Because of the relaxation of the sshd setup, it's best used on a dedicated virtual machine just for this (an Amazon micro instance for example).

Requirements

leecrossley

/*
THIS GIST IS OUT OF DATE AND NOT MONITORED
PLEASE SEE https://github.com/leecrossley/cordova-plugin-shake-detection
*/

var shake = (function () {
	var shake = {},
		watchId = null,
		options = { frequency: 300 },
		previousAcceleration = { x: null, y: null, z: null },