Michael Pereira monkeycycle

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PostgreSQL and PostGIS queries
CartoCSS styles
CARTO.js blocks
DI.js blocks
Leaflet.js blocks
Other blocks
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Installing Node.js on Amazon Linux AMI

The following will guide you through the process of installing Node.js on an AWS EC2 instance running Amazon Linux AMI 2016.09 - Release Notes

For this process I'll be using a t2.micro EC2 instance running Amazon Linux AMI (ami-d41d58a7). Once the EC2 instance is up-and-running, connect to your server via ssh

Make sure our server has the latest packages : sudo yum update -y

Himawari-8 animation tutorial

Here’s how to make animations like this one. It requires intermediate Unix command-line knowledge, to install some tools and to debug if they don’t work. You’ll need these utilities:

curl (or you can translate to wget)
convert and montage, part of ImageMagick
ffmpeg, plus whatever codecs
parallel, for iteration that’s nicer than shell for loops or xargs
run everything in zsh for leading 0s in numerical ranges to work

How to setup mount / auto-mount USB Hard Drive on Raspberry Pi

Follow the simple steps in the order mentioned below to have your USB drive mounted on your Raspberry Pi every time you boot it.

These steps are required especially if your are setting up a Samba share, or a 24x7 torrent downloader, or alike where your Raspberry Pi must have your external storage already mounted and ready for access by the services / daemons.

Step 0. Plug in your USB HDD / Drive to Raspberry Pi If you are using a NTFS formatted drive, install the following

Reusable waffle charts

Basic waffle charts using Mike Bostock's [http://bost.ocks.org/mike/chart/](reusable charts) convention. Waffles are configurable, as you can see below:

var waffle = new WaffleChart()
  .selector(".chart")
  .data(data)
  .useWidth(false)
 .label("Value of producers' sales in 2013, in thousands of dollars")

	syntax on
	set ruler " Show the line and column numbers of the cursor.
	set formatoptions+=o " Continue comment marker in new lines.
	set textwidth=0 " Hard-wrap long lines as you type them.
	set modeline " Enable modeline.
	set esckeys " Cursor keys in insert mode.
	set linespace=0 " Set line-spacing to minimum.
	set nojoinspaces " Prevents inserting two spaces after punctuation on a join (J)
	" More natural splits
	set splitbelow " Horizontal split below current.

	{
	"name": "project-name",
	"description": "Template for static sites",
	"version": "1.0.0",
	"homepage": "http://www.project-name.com",
	"author": {
	"name": "Adam Reis",
	"url": "http://adam.reis.nz"
	},
	"license": "UNLICENSED",

	#cloud-config

	# In order to access RStudio server via the web interface, you must log on with
	# a user account that allows password access. This script does not add that user
	# by default. You may either ssh as root into the server and `adduser` as
	# normal, or script a user addition here:

	# users:
	# - name: # username #
	# lock-passwd: false # allow login with password

	license: gpl-3.0
	height: 1100
	border: no