3979 search results for "git"

9 reasons to use RStudio

October 16, 2012
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9 reasons to use RStudio

In no particular order, here are nine reasons why I really like the RStudio IDE for the R statistical programming language. 1) R benefits from an IDE – I accept that in some languages an IDE is unnecessary—Perl is the first example … Continue reading →

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Life on the Big International Frontier

October 16, 2012
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Life on the Big International Frontier

Although I have used the Kenneth French data library extensively in various posts, I have not yet used the international data sets paired with the wonderful paper. Eugene F. Fama and Kenneth R. French (2012) "Size, Value, and Momentum in International...

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analyze the national health interview survey (nhis) with r

October 16, 2012
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the national health interview survey (nhis) is a household survey about health status and utilization.  each annual data set can be used to examine the disease burden and access to care that individuals and families are currently experiencing acro...

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Flag space: a scatter plot of raster images

October 16, 2012
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Flag space: a scatter plot of raster images

(Click for a bigger version) I’m not sure when plotting raster images in an R scatter plot will end up being useful. It’s not something I expect to need to do in my day-to-day research, and I think in general probably adds more complexity ...

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Getting taxonomic names downstream

October 16, 2012
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It can be a pain in the ass to get taxonomic names. For example, I sometimes need to get all the Class names for a set of species. This is a relatively easy problem using the ITIS API (example below). The much harder problem is getting all the taxono...

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Not Much of a Grand Finale. What if We Go To 0?

October 15, 2012
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Not Much of a Grand Finale. What if We Go To 0?

When I ask the question “What if the US 10 year goes to 0?", most do not know the effect, the catalyst, or if 0 has ever happened before.  The math is fairly simple to do in Excel or with an old-school calculator, but let’s use RQuantLib to do...

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The Shape of Floating Point Random Numbers

October 15, 2012
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The Shape of Floating Point Random Numbers

Over the weekend, Viral Shah updated Julia’s implementation of randn() to give a 20% speed boost. Because we all wanted to test that this speed-up had not come at the expense of the validity of Julia’s RNG system, I spent some time this

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Gale-Shapley Deferred Acceptance in R

October 15, 2012
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Gale-Shapley Deferred Acceptance in R

In honor of today’s announcement of the Nobel Prize for Roth and Shapley, I found an illustration of the deferred acceptance algorithm from 1962 in R. Credit for the code goes to the blogger at Letters from London, and I’ve included a Gi...

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Banking to n degrees

October 15, 2012
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Banking to n degrees

As often happens, I have learned of a technique just as it is being called into question. In this case, the technique is changing the aspect ratio of a line plot such that the typical slope of each segment is 45° (see), a rule of thumb which has bee...

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New version of httr: 0.2

October 14, 2012
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New version of httr: 0.2

We’re happy to announce a new version of httr, a package designed to make it easy to work with web APIs. Httr is a wrapper around RCurl, and provides: functions for the most important http verbs: GET, HEAD, PATCH, PUT, DELETE and POST. automatic cookie handing across requests, connection sharing, and standard SSL config. a

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