DataCamp .. R you learning?

This week I noticed Datacamp had a half price special, only$200 AUD for a years subscription. So I have cut down on playing games (sorry Battlefield V) and used that time to learn the tidyverse on datacamp.

Visualizing median GDP per capita over time

A line plot is useful for visualizing trends over time. In this exercise, you'll examine how the median GDP per capita has changed over time.
The interactive environment where you can write R code and see the results.

According to Datacamp’s website it is “the smartest way to learn Data Science Online. The skills people and businesses need to succeed are changing. No matter where you are in your career or what field you work in, you will need to understand the language of data. With DataCamp, you learn data science today and apply it tomorrow.

Ergonomics

After breaking my last chair (is someone telling me I am too fat?) I decided to buy a new chair.

It seems there is an official standard for chairs if you want a government or corporate contract. My chair meets it and has a seven year warranty compared with the standard one year warranty.

At time like this I wish I had a car. To get my chair I cycled 15km into the city and wheeled the chair and bicycle to the train station, took the train back home and then walked another kilometre back to my house.

Price(Inc GST):$390.00 
http://www.melbofficefurniture.com.au/office-chairs/task-chairs/oxley/243/productview.aspx

Description:
Fully ergonomic office chair. 
Heavy duty
4 levers
Seat slide
Adjustable arms
Moulded back and seat
Black
7 Year Warranty
140kg rated

When I was shopping for the chair yesterday I decided to have lunch at my favourite Korean restaurant. It had gone out of business, the inside was gutted … it felt a little demoralizing.
So I went to my favourite computer shop, the usual guys weren’t there and I was talking with salesman about business. He said the rent for the small shop was over AUD $200,000 per year.

That’s highway robbery, so wandered down another few doors to an old chinese restaurant I really liked near RMIT … it had bloody closed, in its place another Korean restaurant 🙁
In disgust  I wander back down the street and ate at the big Korean restaurant .. yummy

More Mac software

Just purchased  StackSocials  Mac Bundle 3.0 Ft. Camtasia 2 for $11. I purchased it mainly for Camtasia 2, a screen capture utility used for screencasts (video tutorials of computer programs). It is a PC port to the Mac of an excellent package. The main competition on the Mac is ScreenFlow.
But since both cost $99 and I got it for $11 I can’t complain even if I don’t use it much.

Continue reading “More Mac software”

Playing music on the Mac

Just installed version 1.0 of Vox a lightweight music player for OS X.

I like it a lot, even through it initially crashed a lot.

Solution is at https://www.macupdate.com/app/mac/24852/vox

– Open /Application folder.
– Locate Vox.app
– With control+click (right click) on Vox icon select ‘Show Package Content’
– Open enclosed folder Contents->XPCServices
– Remove com.coppertino.Vox.GNTPClientService.xpc
– Restart Vox

For today only I think, you can unlock the radio function for free – http://coppertino.com/vox/unlockradio.php?code=VOXRUMORS

To get around sandbox restrictions, an add-on for hardware control is downloadable at http://coppertino.com/vox/addon.html

Statistics and Programming Tutorials

Statistics and Programming Tutorials

From my point of view I am only interested in three languages for stats, R, Python and Excel. Excel I won’t cover here, but there are many fine books on it on Amazon.

R and Python are free open source languages. R is a language for statistics, whilst Python is a more general purpose programming language.

I prefer the syntax of Python over R any day, but for statistical modelling and making pretty graphs, R has a great mindshare.

Books about Python and statistics

Think BayesThink Bayes is an introduction to Bayesian statistics using computational methods. This version of the book is a rough draft. The author is making the draft available for comments, but it comes with the warning that it is probably full of errors.

Think Stats: Probability and Statistics for ProgrammersThink Stats emphasizes simple techniques you can use to explore real data sets and answer interesting questions. Think Stats is based on a Python library for probability distributions (PMFs and CDFs). Many of the exercises use short programs to run experiments and help readers develop understanding. Most introductory books don’t cover Bayesian statistics, but Think Stats is based on the idea that Bayesian methods are too important to postpone. By taking advantage of the PMF and CDF libraries, it is possible for beginners to learn the concepts and solve challenging problems.

Think Python: How to Think Like a Computer ScientistThink Python is an introduction to Python programming for beginners.

R

R is used a lot in academia and science. A lot of online stats courses use R for teaching statistics.

A Crash Course in R | (R news & tutorials)single program with many examples of syntax

Getting staRted with R. | (R news & tutorials)lots of links to good tutorials

twotorials by anthony damicoexcellent tutorial screencasts on R

Flowingdata TutorialsFlowing data is a great site, not just for R, but statistics and presentation in general

The Guerilla Guide to RIt’s basically a number of Stack Overflow links organized and ordered in a way to help R programmers learn their way to the next level. If you are proficient in R, I hope these resources will help you get closer to being amazing. If you are just getting started with R, I’d suggest adding this page to your bookmarks and returning when you are familiar with the basics of R programming.
This “book” essentially writes itself since most of the experts (and peer-reviewers) are answering the questions. Most of the questions are “real-world” and are asked by novice or intermediate programmers.

Books

IPSUR – Introduction to Probability and Statistics Using Ra textbook written for an undergraduate course in probability and statistics.

Learning Statistics with R | Computational Cognitive Science LabA free book form the university of Adelaide, designed for an introductory statistics class for psychology students, using the R statistical package as the primary tool 

Introduction to Data ScienceThis book provides non-technical readers with a gentle introduction to essential concepts and activities of data science. For more technical readers, the book provides explanations and code for a range of interesting applications using the open source R language for statistical computing and graphics.
Available in PDF and ibook format 

Reader is dead, long live ?

 

Google Reader dies tomorrow. The king is dead, long live the pretenders

 

http://katiefloyd.me/blog/how-to-download-your-google-reader-data
http://www.leancrew.com/all-this/2013/06/feedle-dee-dee/

 

TidBits – The state of Google Reader Replacements
The Feed Reader Reviews: Feedl
The Feed Reader Reviews: Feedbin
The Feed Reader Reviews: Newsblur 
http://readerisdead.com

 

iOS Readers 

http://www.macstories.net/news/mr-reader-2-0-adds-support-for-feedly-feed-wrangler-fever-and-more/
Bye-bye, Google Reader: Alternative RSS solutions for Mac and iOS users