443 search results for "knitr"

Using Dates and Times in R

February 10, 2014
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Using Dates and Times in R

Today at the Davis R Users’ Group, Bonnie Dixon gave a tutorial on the various ways to handle dates and times in R. Bonnie provided this great script which walks through essential classes, functions, and packages. Here it is piped through knitr::spin. The original R script can be found as a gist here. Date/time classes Three...

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rMaps released

February 10, 2014
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rMaps released

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...

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Sochi Olympic Medals

February 9, 2014
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Sochi Olympic Medals

For those who are addicted to R and haven’t the time to click the mouse on a web browser you too can still be informed about the results of the 2014 Sochi Winter Olympics. I was inspired by a SO … Continue reading →

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After 1st semester of Statistics PhD program

February 9, 2014
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After 1st semester of Statistics PhD program

Have you ever wondered whether the first semester of a PhD is really all that busy? My complete lack of posts last fall should prove it Some thoughts on the Fall term, now that Spring is well under way: The … Continue reading →

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Another skewed normal distribution

February 8, 2014
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Another skewed normal distribution

At the CLRS last year, Glenn Meyers talked about something very near to my heart: a skewed normal distribution. In loss reserving (and I'm sure, many other contexts) standard linear regression is less than ideal as it presumes that deviations from the mean are equally distributed. We rarely expect this assumption to hold (though we

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R Studio and "Advanced R Development"

February 5, 2014
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R Studio and "Advanced R Development"

Well, I am tuning back in after a brief hiatus (what's a year-or-two-or-four between friends)?  Among other things, I just wrapped up a book for O'Reilly Media (Client-Server Web Apps with JavaScript and Java) due out in the Spring.   Please ...

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How to upload files to Dropbox and Google Docs from R

February 5, 2014
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How to upload files to Dropbox and Google Docs from R

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 I know, the best R package for uploading files to...

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Caching API calls offline

February 2, 2014
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I've recently heard the idea of "offline first" via especially Hood.ie. We of course don't do web development, but primarily build R interfaces to data on the web. Internet availablility is increasinghly ubiqutous, but there still are times and places where you don't have internet, but need to get work done. In the R packages we write there...

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An idiot learns Bayesian analysis: Part 2

February 1, 2014
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An idiot learns Bayesian analysis: Part 2

A week ago, I wrote a bit about my personal journey to come to grips with Bayesian inference. I referred to the epiphany that when we're talking about Bayesian analysis, what we're talking about- in a tangible way- is using and modifying multivariate distributions. This reminds me of the moment, about twenty years ago now,

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An idiot learns Bayesian analysis: Part 1

January 25, 2014
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An idiot learns Bayesian analysis: Part 1

I've done a dreadful job of reading The Theory That Would Not Die, but several weeks ago I somehow managed to read the appendix. Here the author gives a short explanation of Bayes' theorem using statistics related to breast cancer and mammogram results. This is the same real world example (one of several) used by

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