Skip to main content

Programming in R

Image saved from my new ShinyApp
Over the past few days I've been playing around with R, a statistical language which is essentially an offshoot of S, which was created in the 1980's. R has some powerful features which enable to it rapidly create meaningful graphical illustrations. I've really enjoyed manipulating some of the datasets on Kaggle with it. Here's a ShinyApp I published to demonstrate a simple R program to track where different plant and animal species live within the US national parks.

Comments

Post a Comment

Popular posts from this blog

How NOT To Write Code / How To Decipher Bad Code

Confusing code is bad code. In this post I'll be talking about one of the worst coding practices: using nondescript variables. As an example, we'll be looking at a simple problem from Project Euler (#28). I'll give you an example using really bad code and then we'll look at how we can decipher it and make it more clear and understandable. First, here's the problem: Starting with the number 1 and moving to the right in a clockwise direction a 5 by 5 spiral is formed as follows: 21  22 23 24  25 20   7   8   9  10 19  6   1   2 11 18   5   4   3  12 17  16 15 14  13 It can be verified that the sum of the numbers on the diagonals is 101. What is the sum of the numbers on the diagonals in a 1001 by 1001 spiral formed in the same way? Ok, so now check out this solution:             int i = 1; int j = 1; int s = 0; ...
Post a Comment
Read more

Book Review: Learn WPF MVVM - XAML, C# and the MVVM pattern by Arnaud Weil

Last week I was looking for inexpensive ways to learn about applying the MVVM pattern to WPF programming (I still am; please leave any tips in the comments section) and ran across Arnaud Weil's $10 digitial book on Amazon. It is brief, less than two hundred pages, but obviously economical and I was impressed with how interactive it was. Pros: The book teaches the user how to design a XAML page, how to use data binding, and how to set up the Model-View-View Model structure to conform to commonly accepted standards. The feature that impressed me the most was that Weil has provided a number of interactive exercises to teach you how to create a WPF-MVVM application. After each block of material, there are "Now it's your turn to code:" sections in which you are expected to create a XAML control, write a method, bind a control to a data object, etc. Afterward there is a "Solution" section in which Weil leads you step-by-step through the assignment, in ca...
Post a Comment
Read more

Project Euler Problem #19 Counting Sundays

Spoiler Alert: As the About page of Project Euler says, "Real learning is an active process and seeing how it is done is a long way from experiencing that epiphany of discovery." If you are currently attempting to solve this problem in the archives, please do not continue to read this post. I personally worked through all the problems I post on this blog and it has brought me immense satisfaction.  Problem: You are given the following information, but you may prefer to do some research for yourself. 1 Jan 1900 was a Monday. Thirty days has September, April, June and November. All the rest have thirty-one, Saving February alone, Which has twenty-eight, rain or shine. And on leap years, twenty-nine. A leap year occurs on any year evenly divisible by 4, but not on a century unless it is divisible by 400. How many Sundays fell on the first of the month during the twentieth century (1 Jan 1901 to 31 Dec 2000)? Solution:  Although this problem sounds a little ...
Post a Comment
Read more