Blog Archives

Error notifications from R

September 4, 2014
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Error notifications from R

I’m enthusiastic about having R notify me when my script is done. But among my early uses of this, my script threw an error, and I never got a text or pushbullet about that. And really, I’m even more interested in being notified about such errors than anything else. It’s relatively easy to get notified

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Notifications from R

September 3, 2014
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Notifications from R

You just sent a long R job running. How to know when it’s done? Have it notify you by beeping, sending you a text, or sending you a notification via pushbullet! beepr You can use Rasmus Bååth’s beepr package to have your computer play a sound. Install it from CRAN with Then, at the bottom

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Yet another R package primer

August 28, 2014
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Yet another R package primer

Hadley Wickham is writing what will surely be a great book about the basics of R packages. And Hilary Parker wrote a very influential post on how to write an R package. So it seems like that topic is well covered. Nevertheless, I’d been thinking for some time that I should write another minimal tutorial

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Testing an R package’s interactive graphs

August 1, 2014
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Testing an R package’s interactive graphs

I’ve been working on an R package, R/qtlcharts, with D3-based interactive graphs for quantitative trait locus mapping experiments. Testing the interactive charts it produces is a bit of a pain. It seems like I pretty much have to just open a series of examples in a web browser and tab through them manually, checking that

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UseR 2014, days 3-4

July 21, 2014
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UseR 2014, days 3-4

Three weeks ago, I’d commented on the first two days of the UseR 2014 conference. I’m finally back to talk about the second half. Dirk Eddelbuettel on Rcpp Dirk Eddelbuettel gave a keynote on Rcpp . The goal of Rcpp is to have “the speed of C++ with the ease and clarity of R.” He

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Why hadn’t I written a function for that?

July 16, 2014
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Why hadn’t I written a function for that?

I’m often typing the same bits of code over and over. Those bits of code really should be made into functions. For example, I’m still using base graphics. (ggplot2 is on my “to do” list, really!) Often some things will be drawn with a slight overlap of the border of the plotting region. And in

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2014 UseR conference, days 1-2

July 2, 2014
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2014 UseR conference, days 1-2

I’m at UCLA for the UseR Conference. I attended once before, and I really enjoyed it. And I’m really enjoying this one. I’m learning a ton, and I find the talks very inspiring. In my comments below, I give short shrift to some speakers (largely by not having attended their talks), and I’m critical in

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hipsteR: re-educating people who learned R before it was cool

May 15, 2014
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hipsteR: re-educating people who learned R before it was cool

This morning, I started a tutorial for folks whose knowledge of R is (like mine) stuck in 2001. Yesterday I started reading the Rcpp book, and on page 4 there’s an example using the R function replicate, which (a) I’d never heard before, and (b) is super useful. I mean, I often write code like

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Further points on crayon colors

May 9, 2014
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Further points on crayon colors

I saw this great post on crayola crayon colors at the Learning R blog, reproducing a nice graph of the Crayola crayon colors over time. (Also see this even nicer version.) The Learning R post shows how to grab the crayon colors from the wikipedia page, “List of Crayola crayon colors,” directly in R. Here’s

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Two more points about crayon colors

May 8, 2014
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Two more points about crayon colors

If you want to use crayon colors in R but you don’t want to rely on my R/broman package, you can just grab the code. Copy the relevant lines from the R/brocolors.R file: I spent a bit of time thinking about how best to sort the colors in a meaningful way, for the plot_crayons() function.

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