#R#

R Programming

Basic Programming
  Loops
  Matrix operations in R
  Symbolic Math - Differentiation in R
  assigns in R
  User written functions in R

Powertools
  3 Ways of Loading SPSS (sav) files into Stata
  Batch Convert files from SPSS into Stata format
  Draw n values from a defined set
  Program Your own Bootstrap Command #R#
  Easy Monte Carlo Sampler Command
  The Power of the Evaluate, Parse, Paste Combination
  A Command for Randomly Creating Sets of Elements from a Vector

Econometrics

Basic Statistics
  Power Analysis
  Computing Expected Values

Baysian Estimation
  My First Bayesian (Markov Chain Monte Carlo) Simulation

Write Your Own Estimators
  Write your own System IV estimator in R (and SOLS)

Probability
  The Importance of Independence
  The DELTA method
  Calculate an Empirical CDF for a random variable
  Maximum Likelihood Using R

Random Walk
  A Visual Exploration of Two Dimensional Random Walks

Spatial Simulations
  Simulating Spatial Data
  Monster Mash - Spatial Multi-Agent Simulation

Meta-Analysis
  Meta-Analysis Simulation - Monte Carlo

Hierarchical Linear Modelling
  A simple simulation of HLM using two different R packages

Psychometrics

Simulating Individual Items
  Playing around with IRT Graphs

  Simulating 3 parameter IRT data

  Generalized Graded Response Model

  Polytomous Rasch Model (Generalized Partial Credit Model)

  Generalized Graded Response Data Generating Command
  Item Information - IRT

Generating Tests
  Generating Tests of Particular Properties
  Matching Test Information

Item Response Theory Parameter Estimation

  Item Response Theory Estimation

  Maximum Likelihoods and Item Response Theory
  Estimating Person Characteristics from IRT Data - 3PL Model

Computer Adaptive Tests
  Selecting your First Item on a Computer Adaptive Test
  CAT using Kullback–Leibler vs Fisher Information
  Computer Adaptive Test Assuming an Infinite Item Pool
  the catR package for Computer Adaptive Test design

Psychometrics' Metrics
  Estimating Reliaility

Concerto

Test Construction
  Concerto v4.b web-based Content Management System for R Users
  Concerto Simple Demonstration Test v4.b
  Non-verbal reasoning test - Concerto

Item Construction

  Non-Verbal Reasoning Test Construction Part 1-Shape Creation

Miscellaneous

Unfiled
  Using Simulations to Maximize Stochastic Models
  Lorenz Attractor Simulation
  Explosive Roommate Combinations

  Optimal Presidential Seeking Behavior
  US Daily Gun Deaths R Animation - Sandy Hook

Social Networks
  Simulating Social Network Data
  Simulating Social Network Hotspots

R & Stata Bridge
  7 commands in R & Stata
  Nested functions in R and Stata
  Stata is to Accounting as R is to Tetris
  R vs Stata Non-linear least squares!
  ANOVAs and MANOVAs

Dynamic Models
  SIR Model - The Flu Season - Dynamic Programming
  A Dynamic Simulation of a Zombie Apocalypse
  Tit for Tat - Axelrod tournament style competitive simulation

Graphics/Animations
  Creating an easy pie chart from data vectors
  Strategic Zombie Simulation
  Spatial Critter Swarming Simulation
  Generate GIP integrated animation: Gun deaths animation