Joining R-bloggers.com

Today I was invited by Tal Galili, to join the great www.R-bloggers.com network of R blogs. Now all my posts categorized under Statistics/R, will be automagically published to www.R-bloggers.com. In case you don’t know R-bloggers yet, I highly encourage you to visit it. It’s an amazing resource,...

Equality of Covariances Matrices Test in R (varcomp)

This is a piece of code I implemented in 2004, which was supposed to be part of an R-package in multivariate testing (to be named, rather creatively, mvttests). Time has flown, I haven’t still got around to implementing the said package, but people keep asking me for the varcomp function, so here it...

Sphericity Test for Covariance Matrices in R (sphericity.test)

This is a piece of code I implemented in 2004, which was supposed to be part of an R-package in multivariate testing (to be named, rather creatively, mvttests). Time has flown, I haven’t still got around to implementing the said package, but people keep asking me for the sphericity.test function, so...

Miracle Fruit Tablets

The fruit below is called Synsepalum dulcificum, or in common parlance miraculous berry, and was discovered in Africa in 1725, where it was chewed by local tribes before meals. The most interesting aspect of this fruit is that it causes a change in gustatory perception to whoever chews it, making that every...

Why should you consider using Pinboard?

As a long-time del.icio.us user I was quite surprised when I first heard about the rumors about its shutdown by Yahoo. As I dug further into it I came across their official blog post dated December 17th, and decided to wait sometime before making a move, figuring Yahoo would not simply shutdown the service...

R2HTML Package

Update: I maintained R2HTML from the original pub date of this post (2005) up until version 1.59, but no longer maintain it. Maintenance is now back to the author of the package (Eric Lecoutre). Keeping this page just for posterity. Introduction R2HTML is an R package, written and maintained by Eric...

Printing to PostScript in Windows 7 (or where did Apple Color LW 12/660 go?)

1 – Windows 7: First Impressions I’ve recently purchased a copy of Windows 7 for my wife’s computer, and I have to say that it is indeed a quite nice jump ahead in terms of quality in comparison to Windows XP. After installing it and using it for a while I can certainly vouch that Windows...

South Park strikes again

On Southpark episode ‘Le Petit Tourette’, Cartman decides to appear on Dateline NBC, with Chris Hansen. On the episode we find out that Dateline is a show (which I promptly guessed to be fictional for its exaggeration…) that portrays a host who sets up dates with men who were trying to have...

Digital Art

These are some trials I did with digital art around 1999. No definite thematic, just me playing around with some filters These are some trials I did with digital art around 1999. No definite thematic, just me playing around with...

Financial Times on Islamic Finance

Found a nice article on Financial Times today on Islamic Finance: Grappling with problems of success http://media.ft.com/cms/11cc1304-3c81-11dd-b958-0000779fd2ac.pdf Some interesting points: - ‘Yet, an industry where every product needs a religious stamp of approval is also starting to face some vital...