3868 search results for "git"

Multi-species dynamic occupancy model with R and JAGS

February 24, 2013
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Multi-species dynamic occupancy model with R and JAGS

This post is intended to provide a simple example of how to construct and make inferences on a multi-species multi-year occupancy model using R, JAGS, and the ‘rjags’ package. This is not intended to be a standalone tutorial on dynamic community occupancy modeling. Useful primary literature references include MacKenzie et al. (2002), Kery and Royle (2007), Royle and Kery...

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Pareto plot with ggplot2

February 23, 2013
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A Pareto chart, named after Vilfredo Pareto, is a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line (quoted from Wikipedia). ...

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The Financial Crisis on Tape Part I

February 23, 2013
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The Financial Crisis on Tape Part I

Hello and welcome to Joe's Data Diner's first ever post!Today, I will touch on both R and Finance, but I'll try and make it accesible for those with an interest in either and not just Quants like myself!Almost everyone is now aware that asset correlati...

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Simulating Population Growth in Cities Using R

February 23, 2013
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Simulating Population Growth in Cities Using R

R is great for anyone who wants to get started on learning Simulation. (Both Discrete Event or Agent-based, with stochastic elements in the process.) This post is inspired by Matt Asher's "quick-and-dirty" R simulation work on Population Growth. Matt u...

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Free e-book on Data Science with R

February 22, 2013
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Free e-book on Data Science with R

A new book by Jeffrey Stanton from Syracuse Iniversity School of Information Studies, An Introduction to Data Science, is now available for free download. The book, developed for Syracuse's Certificate for Data Science, is available under a Creative Commons License as a PDF (20Mb) or as an interactive eBook from iTunes. The book begins with the following clear definition...

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Shiny 0.4.0 now available

February 22, 2013
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Shiny 0.4.0 now available

Shiny version 0.4.0 is now available on CRAN. The most visible change is that the API has been slightly simplified. Your existing code will continue to work, although Shiny will print messages about how to migrate your code. Migration should be straightforward, as described below. It will take a bit of work to switch to

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knitr: Changing chunk options like fig.height programmatically, mid-chunk

February 22, 2013
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Knitr is a great tool for doing reproducible research. You can produce all kinds of output inside a single knitr chunk, e.g. you can write a loop to produce lots of figures or tables. The only catch is if you want your figures to have differing captions, heights, etc (and usually you do). The standard

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Additional Plots on French Breakpoints as Valuation

February 21, 2013
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Additional Plots on French Breakpoints as Valuation

I feel like there might be some merit in Slightly Different Measure of Valuation using Ken French’s Market(ME) to Book(BE) Breakpoints by percentile to offer an additional valuation metric for US stocks.  I thought some additional plots might he...

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Elevation Profiles in R

February 21, 2013
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Elevation Profiles in R

First, let's load up our data. The data are available in a gist. You can convert your own GPS data to .csv by following the instructions here, using gpsbabel.gps <- read.csv("callan.csv",  header = TRUE)Next, we can use the function SMA fr...

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Examining Overlapping Meetup Memberships with Venn Diagrams

February 21, 2013
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Examining Overlapping Meetup Memberships with Venn Diagrams

As of the beginning of 2013, Data Community DC ran three Meetup groups: Data Science DC, Data Business DC, and R Users DC. We’ve often wondered how much these three groups overlapped. In this post, I’m going to show you … Continue reading → The post Examining Overlapping Meetup Memberships with Venn Diagrams appeared first on Data...

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