4914 search results for "git"

Analyze your Google+ Posts with R [Update]

December 28, 2013
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Analyze your Google+ Posts with R [Update]

Hey everybody, today I show you how you can start working with the Google+ API and R. We create a personal API key, get our own stats and plot them in a nice looking graph. Get the API Key You can get our API key on the Google Developer console here: https://code.google.com/apis/console There you can see …

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Sundial calculations

December 28, 2013
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Sundial calculations

After experimenting with calculations for what I eventually came to realize were analemma-based sundials (with shadow cast by a vertical pole), I remembered that the common sundial has a wedge as the shadow-maker. A bit of research told me that the wedge is called a gnomon. It is a right triangle with one vertex (the centre vertex, shall...

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Top Songs by Artist on CD102.5 in 2013

December 27, 2013
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Top Songs by Artist on CD102.5 in 2013

In a previous post, I showed you how to scrape playlist data from Columbus, OH alternative rock station CD102.5. Since it's the end of the year and best-of lists are all the fad, I thought I would share the most popular songs and artists of the year, a...

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Points, Polygons and Power Outages

December 27, 2013
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Points, Polygons and Power Outages

Most of my free coding time has been spent tweaking a D3-based live power outage tracker for Central Maine Power customers (there’s also a woefully less-featured Shiny app for it, too). There is some R associated with the D3 vis, but it’s limited to a cron job that’s makes the CSV files for the sparklines

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Sinterklaas and Santa Claus gave presents

December 27, 2013
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Sinterklaas and Santa Claus gave presents

In December my nice little netbook acquired a shiny new openSUSE 13.1, including all the goodies I might want to use in 2014; R, Stan, Julia and Jags. So here is what you might get when you set up a computer for statistics today.JagsI have been using J...

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Coxcomb plots and ‘spiecharts’ in R

December 27, 2013
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Coxcomb plots and ‘spiecharts’ in R

I was contacted recently by a housing organisation who wanted an attractive visualisation of their finances, arranged in a circular form. Because there were two 4 continuous variables to include, all of which were proportions of each other, the client suggested a plot similar to a pie chart, but with each segment extending out a different radius from the segment. I realised...

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Coxcomb plots and ‘spiecharts’ in R

December 27, 2013
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Coxcomb plots and ‘spiecharts’ in R

I was contacted recently by a housing organisation who wanted an attractive visualisation of their finances, arranged in a circular form. Because there were two 4 continuous variables to include, all of which were proportions of each other, the client suggested a plot similar to a pie chart, but with each segment extending out a different radius from the segment. I realised...

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Top Songs by Artist on CD102.5 in 2013

December 26, 2013
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Top Songs by Artist on CD102.5 in 2013

In a previous post, I showed you how to scrape playlist data from Columbus, OH alternative rock station CD102.5. Since it's the end of the year and best-of lists are all the fad, I thought I would share the most popular songs and artists of the year, ...

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Tips on Computing with Big Data in R

December 26, 2013
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by Joseph Rickert The Revolution R Enterprise 7.0 Getting started Guide makes a distinction between High Performance Computing (HPC) which is CPU centric, focusing on using many cores to perform lots of processing on small amounts of data, and High Performance Analytics (HPA), data centric computing that concentrates on feeding data to cores, disk I/O, data locality, efficient threading,...

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Response Time Percentiles for Multi-server Applications

December 25, 2013
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Response Time Percentiles for Multi-server Applications

In a previous post, I applied my rules-of-thumb for response time (RT) percentiles (or more accurately, residence time in queueing theory parlance), viz., 80th percentile: $R_{80}$, 90th percentile: $R_{90}$ and 95th percentile: $R_{95}$ to a cellphone application and found that the performance measurements were not completely consistent. Since the data appeared in a journal blog, I...

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