More about FreeNAS jails
My first attempt to upload a large tarball to Glacier was a success, as described here, but subsequent ones failed. The reason, I suspect, is that the FreeNAS server is headless. I get shell access to...
View ArticleBacking up FreeNAS to AWS Glacier
On my FreeNAS home server I added a new jail, called it awsboss. I also added a new ZFS dataset, called it storage. I added this data set to awsboss as /mnt/storage and I also made it into an AFP share...
View ArticleR version of tsfill and xfill combined
Suppose you have an unbalanced panel with daily data observed at the zip code level, with some zip codes (labeled zip.cd) not having any records on some days (labeled cal.dt). Suppose also that these...
View ArticleGetting started with the NooElec NESDR Nano on OS X Yosemite
This is how I did it. Your mileage may vary. Prerequisites: - XCode with command line tools - MacPorts - cmake, autoconf, automake, libtool, libusb*, rtl-sdr All programs listed on the last item above...
View ArticleRegularization and the Bible
There are two kinds of regression regularization: ridge, or L2, and Lasso, or L1. They both let you get rid of some variance (less is good) in return for picking up some bias (of which also less is...
View ArticleI wrote an R data frame to a Teradata table on a Mac
Here's how I did it: On a new Mac running Mavericks and R 3.1.2 with devtools, I installed Java for Mac. I installed the RJDBC package from CRAN (which depends on the DBI package also from CRAN) and...
View ArticleAmending a hasty commit
On my current project I occasionally have to report anomalies in input data to people upstream, who can look into them. I do this with html files which I knit from R Markdown. They have to include...
View ArticleRecipe for pairing up RStudio with GitHub
On both Windows and Mac I have been happy to use RStudio for R development and the GitHub app for handling version control. The app seems to be GitHub's own preferred interface, and if you use it you...
View ArticleHere’s to MOOC’s. They’re better than textbooks
The job of textbooks is to separate brilliance, which has zero marginal cost, from individual attention, which is labor-intensive. Everybody is better off when the few brilliant teachers write books...
View ArticleIntroducing syncR
A new and improved version of the syncPacks() function is now part of a GitHub package, which you can install through devtools::install_github('ghuiber/syncR'). If you're into that, you can help...
View ArticleSome unresolved hiccups with R 3.1.0 on Mavericks, and a workaround
If you're going to download the Mac binaries for the latest R, you will see that they come in "Snow Leopard and higher" and "Mavericks and higher" flavors. If you run Mavericks, the latter is a natural...
View ArticleMacbook Pro running hot, draining battery after upgrading to SSD?
Mine did. That was an unpleasant surprise. Googling for a solution brought up untold amounts of speculation and wasted time. What ended up working for me was resetting the System Management Controller...
View ArticleFreeNAS works as advertised
I decided to replace the HDD with a SSD in my Mac for Christmas, but I only got as far as buying the thing and backing up the computer using Time Machine as explained here to a poor man's FreeNAS...
View ArticleInvisible methods
R objects come with various methods that make them useful. I tend to stumble over these by googling something I want to do, and finding some code example on StackOverflow. But today I learned (from...
View ArticleHow I backed up a bunch of old pictures to Amazon Glacier
This is from a home server that runs Fedora 14, to which I have ssh access from my MacBook Pro. 1. I git clone'd this. 2. Then, as super-user, I called wget...
View ArticleI put up my first post on RPubs
Sure, it may be the 4chan of data analysis, but it's so nice to be able to do R Markdown right there in RStudio and just hit the Publish button. Of course, this convenience has downsides. I know it's...
View ArticleStata 13 is coming on June 24
Yellow color scheme is out, sky-blue is in, plus expanded capabilities, as one might expect. Notable among them, xtologit, xtoprobit and long strings -- 2 billion character long, that is. One of these...
View ArticleKeeping knitr happy after upgrading to R 3.0.0
As noted here, after upgrading to R 3.0.0 you must run update.packages(checkBuilt=TRUE) This is because a bunch of packages have to be to rebuilt under R 3.0.0 in order to keep working. So I did, but...
View ArticleA quick note on rJava
I recently had to set up a PC with similar kit as I have on my Mac. On this PC the OS is Windows 7 64-bit but the browser is IE8 32-bit. This causes jucheck.exe to install (and occasionally update)...
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An R-squared for logistic regression, packaged
This morning I checked Paul Allison's Statistical Horizons blog and found a post on measures for logistic regression. It introduced me to Tjur's by way of an example, which I repackaged below: //...
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