R - The Drafting Table

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R

A collection of 10 posts

Graphical Methods

Nomography

Nomography is the art/science (both are involved) of graphical calculators. Using a nomogram, you can quickly solve an equation (but only the one it was designed for) with the aid of nothing more than a straightedge. It's something I've been interested in for quite a

Most Probable Number

I wrote an R script for calculating MPN. The Most Probable Number [https://en.wikipedia.org/wiki/Most_probable_number] (MPN) method is a long-standing way of calculating the concentration of bacteria in a sample (usually expressed as cells/100 mL). Its distinctive is that it doesn't require

Graphical Methods

Deffeyes Diagram

This post is intended to complement the previous one [https://danbscott.ghost.io/diy-co2-aq/] with a more theoretical look at dissolving carbon dioxide in water. I wrote a script in R to draw a Deffeyes diagram. This diagram shows the interplay between CO2, pH, and alkalinity [https://en.wikipedia.org/

The Rains of Quinault

One of the highlights of my trip to the West Coast [https://danbscott.ghost.io/seattle-trip-2015/] was spending a long weekend in Olympic National Park with a couple of friends. This enormous park (bigger than the state of Rhode Island, apparently) has everything from mountains, to temperate rainforests, to coastline.

Introduction to Non-Parametric Statistics

Non-parametric statistics are something that I don't recall learning much about in any classes I took—just picked them up from my advisors and literature I read while I was working on my master's thesis [https://danbscott.ghost.io/my-masters-thesis/]—but they're something I

A Minimalist Map of the US Interstate System

Since I've been travelling in the United States quite a bit recently (for business), I thought it would be useful to learn a bit more about the interstate highway system, specifically how the numbering scheme works. It's actually very well-organized and systematic. I made the map

Water Quality Profile Along an Entire River

I previously [https://danbscott.ghost.io/up-the-creek-with-a-paddle/] blogged about an expedition [http://riogrande.texastribune.org/] to travel the entire length of the Rio Grande, by reporter Colin McDonald. That expedition has now come to an end [http://www.texastribune.org/2015/01/27/disappearing-rio-grande-expedition-recap/] , having reached its destination: the Gulf

Calibrating a homemade probe

This post is a continuation of the previous one [https://danbscott.ghost.io/a-home-made-probe-for-dissolved-solids-in-water/] on making a homemade probe for dissolved solids in water. Here I explain how I calibrated it after I got it working. After printing off a new probe tip [http://www.thingiverse.com/thing:440005], I

Sim City's Laffer Curve

This post is something I originally wrote for a Facebook note a few years ago, but I'm planning to do more to explore economic concepts in video games. Introduction I dug out an old computer game recenty (i.e. before I originally wrote this note ), Sim City 2000.

Chaos Game Sierpinski Triangle

The following figure is a representation of the fractal known as the Sierpinski Triangle. It was drawn using the chaos game [http://en.wikipedia.org/wiki/Chaos_game] technique with 100,000 iterations. The way this technique works is: 1. A random starting point is chosen; 2. The next point