Articles by Fellgernon Bit - rstats

Simple mortgage calculator

April 22, 2014 | 0 Comments

Have you ever thought of borrowing some money? A common case is when you have to borrow money for buying a house, which is called a mortgage. Wikipedia ('Mortgage loan' entry) goes into much more detail about the definition than what I'll cover. One o... [Read more...]

rMaps Mexico map

February 26, 2014 | 0 Comments

It's exciting when great people help each other get things done This is a simple networking story, which not be surprising to some but I was happily surprised by it. This is how the story goes: Two weeks ago rMaps (Vaidyanathan, 2014) was released. After making a blog post about it ...
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rMaps released

February 10, 2014 | 0 Comments

Ramnath Vaidyanathan just released his new R interactive package, rMaps (Vaidyanathan, 2014). The packages relies on the development version of his widely known rCharts package (Vaidyanathan, 2013) as well as javascript libraries that specialize in maps. If you don't know Ramnath, he is one of the most active R developers out there!! ... [Read more...]

How to upload files to Dropbox and Google Docs from R

February 5, 2014 | 0 Comments

Have you ever wondered whether you can upload files from R to Dropbox and/or Google Docs? I recently asked myself this question while making my most recent Shiny app (more later). The answer is yes, you can upload files from R to these cloud services! Dropbox As far as ...
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Trying to reduce the memory overhead when using mclapply

November 14, 2013 | 0 Comments

I am currently trying to understand how to reduce the memory used by mclapply. This function is rather complicated and others have explained the differences versus parLapply (A_Skelton73, 2013; lockedoff, 2012 ) and also made it clear that in mclapply each job does not know if the others are running out of ... [Read more...]

Creating your Jekyll-Bootstrap powered blog for R blogging

November 9, 2013 | 0 Comments

As you might have noticed, I recently decided to move Fellgernon Bit from Tumblr to GitHub. There are a couple of reasons why I made this change. I wanted a more professional-looking blog. There are not many R blogs on Tumblr, and well, long text posts are not really meant ...
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ggplot Tutorial

June 21, 2013 | 0 Comments

ggplot Tutorial I liked the following ggplot2 tutorial which is featured in Gabriela de Queiroz’s blog called unbiasedestimator. The tutorial looks very neatly presented and I’m sure that it will be very helpful to anyone just getting started with ggplot2 before they jump into ggplot2: Elegant Graphics for ... [Read more...]

userR2013 data analysis contest: data exploration

June 12, 2013 | 0 Comments

Description The useR2013 conference is organizing a data analysis contest, check the rules here. They have a package called useR2013DAC with two data sets: one from La Liga and the other one from the Formula 1. Once you download and install the package (available here), you can quickly explore the ...
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Reading an R file from GitHub

May 9, 2013 | 0 Comments

Lets say that I want to read in this R file from GitHub into R. The first thing you have to do is locate the raw file. You can do so by clicking on the Raw button in GitHub. In this case it’s
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Using plyr and doMC for quick and easy apply-family functions

April 26, 2013 | 0 Comments

A few weeks back I dedicated a short amount of time to actually read what plyr (Wickham, 2011) is about and I was surprised. The whole idea behind plyr is very simple: expand the apply() family to do things easy. plyr has many functions whose name ends with ply which is ...
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Predicting who will win a NFL match at half time

March 23, 2013 | 0 Comments

It was great to have a little break, Spring break, although the weather didn’t feel like spring at all! During the early part of the break I worked on my final project for Jeff Leek’s data analysis class, which we call 140.753 here. Continuing my previous posts on the ... [Read more...]

And so begins English Composition I

March 21, 2013 | 0 Comments

This week started the English Composition I: Achieving Expertise course (Comer, 2013) that I have been looking forward to. I am not sure yet how long I will last, but I hope to enjoy it as much as I can. Plus, it should help me with my posting and other writing ...
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FBit: GitHub repo for posts with R code for this blog

March 11, 2013 | 0 Comments

This is a test post since I want to improve upon Jeffrey Horner’s strategy for posting R code in Tumblr. The only minor improvement I wanted to try out is hosting the images directly on the web. I mean, right now the images won’t show in RSS readers. ... [Read more...]

Analyzing SimplyStatistics visits info

March 9, 2013 | 0 Comments

Recently we had to analyze the data of the number of visits per day to There were two goals: Estimate the fraction of visitors retained after a spike in the number of visitors Identify (if any) any factors that influence the fraction estimated in 1. For me it was ... [Read more...]

Sharing my work for “Advanced Methods III”

February 13, 2013 | 0 Comments

This semester I’m taking the live version of the Data Analysis class by Jeff Leek. His more popular version of the course is available through Coursera.  One of the things that Jeff promotes is reproducibility and sharing code. I share that tendency and thus created a Git repository for ...
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Introduction to R and Biostatistics (2012 version): presentation

November 12, 2012 | 0 Comments

To follow my Introducing R and Biostatistics to first year LCG students (2012 version) post,  you can now find the presentation online from my site either in presentation format, in a single webpage format, or the raw Rmd file. To prove the point that publishing to RPubs is super easy, you ...
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Visualizing colors()

October 19, 2012 | 0 Comments

The other day I learnt about the existance of the colors() vector in R which specifies all the character-based colors like “light blue”, “black”, etc. So I made a simple plot to visualize them all. Here’s the code: mat [Read more...]
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