Michael Rossetti s2t2

This is the map of Nielen Designated Marketing Areas using D3.js. Hover over for data related to each area.

See map here

See code here

###Credits

Map adapted from Mike Bostock's map example
Topojson made by converting shapefile from here to topojson via Mike Bostock's instructions

On Tue, Mar 12, 2013 at 1:26 PM, Martin Fowler [email protected] wrote:

The term pops up in some different places, so it's hard to know what it means without some context. In PoEAA I use the pattern Service Layer to represent a domain-oriented layer of behaviors that provide an API for the domain layer. This may or may not sit on top of a Domain Model. In DDD Eric Evans uses the term Service Object to refer to objects that represent processes (as opposed to Entities and Values). DDD Service Objects are often useful to factor out behavior that would otherwise bloat Entities, it's also a useful step to patterns like Strategy and Command.

It sounds like the DDD sense is the sense I'm encountering most often. I really need to read that book.

The conceptual problem I run into in a lot of codebases is that rather than representing a process, the "service objects" represent "a thing that does the process". Which sounds like a nitpicky difference, but it seems to have a real impact on how people us

Color scheme picker using ColorBrewer scales

A color scheme picker based on Mike Bostock's visual reference to every ColorBrewer scale (colors by Cynthia Brewer). Not perfect, but just a first try.

Mike Bostock's color brewer scales are available in CSS and JS format.

Click on a palette to change the color scheme. The data is based on 2010 US Census blocks for Georgia aggregated into grid squares.

This is a more wordy, narrative accompaniment to my pretty bare presentation about d3 that I gave to the jQuery DC Meetup.

What is d3?

Not a chart library (though you can make charts with it)
Not a map library (though you can make maps with it)

Which is to say, d3 can be used for building things, but the 'atomic parts' are lower-level than bar graphs or projections or so on. This is a powerful fact. It also means that d3 is a good basis for simple interfaces, like Vega.js, that make its power accessible in other ways.

Not a compatibility layer (it doesn't work with bad browsers)

Here's an example of how to embed a Gist on GitHub Pages:

{% gist 5555251 %}

All you need to do is copy and paste the Gist's ID from the URL (here 5555251), and add it to a gist tag surrounded by {% and %}.

Ruby 1.9.3 stable, RVM, nginx, passenger on Amazon Linux AMI (CentOS, 03-2013)

This combines the instructions on a few different tutorials:

Tabula EC2 AMI quickstart - A nice illustrated How-To for a basic EC2 setup, including permissions setup. The instructions apply to a specific demo app but apply to any EC2 usage
Code by Zack » Getting RVM set up on Amazon EC2 - How to install the latest stable version of Ruby (1.9.3p392) with RVM
Code by Zack » Setting up Passenger with rvm on Ubuntu - Installing Passenger and using it to set up nginx. The instructions at the end of Zack's guide on creating an init script apply to Ubuntu only.
[Slicehost Articles: Cen

	<!DOCTYPE html>
	<html>
	<head>
	<title>Marker Leaflet Map</title>
	<meta charset="utf-8" />
	<link
	rel="stylesheet"
	href="http://cdn.leafletjs.com/leaflet-0.7/leaflet.css"
	/>
	</head>

	# Put this method in your helper file to render inline SVG

	def inline_svg(path)
	file = File.open("app/assets/images/#{path}", "rb")
	raw file.read
	end

	<!DOCTYPE html>
	<html>
	<head>
	<title>Testmap</title>
	<meta charset="utf-8" />
	<script src="http://cdn.leafletjs.com/leaflet-0.6.1/leaflet.js"></script>
	<script src="http://d3js.org/d3.v3.min.js"></script>
	<style>
	@import url(http://cdn.leafletjs.com/leaflet-0.6.1/leaflet.css);
	</style>

	license: gpl-3.0
	redirect: https://observablehq.com/@d3/d3-color-schemes