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Alex Shum

PhD Student in statistics at Iowa State University.

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Reactive Programming with R Shiny

Introduction to Shiny and reactive programming with examples.


Creating a database for data with dplyr

Creating a mysql database, loading data and reading to dplyr

Numpy and Scipy Super Simple Examples

Numpy-Scipy examples

Simple introduction to Python from R

Python from R


Setting up sublime for R and other languages

Some configuration options for sublime

Parallel processing in Julia

Basics of parallel processing in Julia

Solving problems with data structures in Julia

Maps in Julia and R

Memoization and Recursion


I hate non-standard evaluation

non-standard evaluation in R is stupid

Maps with ggvis

small example of maps with ggvis

Data visualization contest 2014

UseR 2014 Data contest