4699 search results for "git"

Shiny Server on CentOS

June 29, 2013
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I’ve been enjoying working with Joe Cheng’s Shiny Server and wanted to create a quick step-by-step guide on installing it on an AWS CentOS EC2 instance as the standard Shiny Server instructions assume the typical dependencies are installed: 1. Shiny’s instructions say to install libssl-dev (sudo yum install libssl-dev), here is the CentOS equivalent : sudo yum install openssl-devel

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rCharts Remake of NYT

June 28, 2013
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rCharts Remake of NYT

For those wondering if I have forsaken finance, the answer is no.  I just don’t think there is much to do in here besides watch and wait.  So more d3 and R as I try to distract myself from doing something dumb in the markets. This time I used rCharts and slidify to  recreate another...

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Create Word documents from R with R2DOCX

June 28, 2013
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If you work in a corporate environment, then the Word document format is still pretty ubiquitous. Personally, I've switched to Google Docs for most of my own documents, but I still receive a couple of Words docs from others via email every day. And it's common request from clients of our Services team to generate documents in the Word...

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dimple d3 and rCharts

June 27, 2013
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dimple d3 and rCharts

I put together a quick tutorial combining my two favorite things: finance and interactive visualizations.  I show how to use the new dimplejs d3 library with rCharts to create some nice interactive plots of US Treasury yield data.  ...

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Analyses of the Best Undergraduate (US-based) Business Schools of 2013

June 27, 2013
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Analyses of the Best Undergraduate (US-based) Business Schools of 2013

Link to the code for the analysis program is given at the very end.I teach in a business school and am always fascinated by rankings published by different outlets. As much as one would like to think that they are meaningless, they seem to influence ho...

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?help! Instant R search on Rdocumentation.org

June 26, 2013
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?help! Instant R search on Rdocumentation.org

Last week, I was working on an educational R project when I needed to consult the help files of different R packages and functions online. After doing some Google searches, it appeared to me that finding an easy-to-use tool was not as simple as I had expected. The closest that I got, were the websites

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R snippets for vim-SnipMate

June 26, 2013
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Vim is my editor of choice, reasonable so, whether it be for coding C++, LaTeX or even R. I’ve used RStudio, which even has a Vim-Mode, but I still prefer to use Vim. Vim has it’s own R plugin, namely Vim-R-plugin, but this post is about snippets. SnipMate is an awesome auto-completion plugin for Vim The post R...

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Technical(and not technical) strategy testing

June 25, 2013
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Technical(and not technical) strategy testing

I got "hooked" on OOP approach of R in particular reference classes. And after my last little project on option scenario analysis I reconstructed my messy technical strategy testing code.Now to begin I would like to reason why I have done this while there exists a nice "blotter" and "quantstrat" packages.First of all "quantstrat" is faster than blotter, which...

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Natural language processing tutorial

June 25, 2013
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Natural language processing tutorial

Introduction This will serve as an introduction to natural language processing. I adapted it from slides for a recent talk at Boston Python. We will go from tokenization to feature extraction to creating a model using a machine learning algorithm. The goal is to provide a reasonable baseline on top of which more complex natural language processing can be...

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Natural Language Processing Tutorial

June 25, 2013
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Natural Language Processing Tutorial

Introduction This will serve as an introduction to natural language processing. I adapted it from slides for a recent talk at Boston Python. We will go from tokenization to feature extraction to creating a model using a machine learning algorithm. The goal is to provide a reasonable baseline on top of which more complex natural language processing can be done, and...

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