For some theory on the standard IEEE-754, you can read the Wikipedia page. Here I will post only the code of the function to make the conversion in R.
First we write some functions to convert decimal numbers to binary numbers:
decInt_to_8bit q r xx for(i in 1:precs){
xx q r xx }
rr return(rr)
}
devDec_to_8bit nas nbs xxs for(i in 1:precs)
{
xxs...
Monthly Archives: October 2010
Convert decimal to IEEE-754 in R
How fast is JAGS?
From Martyn Plummer, on the JAGS news blog. Key graph below, showing a few outlying cases in which JAGS is substantially slower than OpenBUGS, but generally, JAGS performs quite favorably. Key point from Martyn: Incidentally, these figures are for JAGS with the glm module loaded. The glm module is not loaded by default. If you
Typos…
Edward Kao just sent another typo found both in Monte Carlo Statistical Methods (Problem 3.21) and in Introducing Monte Carlo Methods with R (Exercise 3.17), namely that should be I also got another email from Jerry Sin mentioning that matrix summation in the matrix commands of Figure 1.2 of Introducing Monte Carlo Methods with R 
The Data Science Venn Diagram
Whenever I'm asked, "Who uses R?", I usually rattle off a long list of job titles: statistician, analyst, quant, researcher ... and that's before all the domain-specific titles. It would be nice if there were a simple, succinct phrase to describe the process of working with, analyzing, and communicating with real data. At the new blog, "dataists", the inaugural...
Arctic Sea Ice Extent Trends: 1979-2010; Update 1
Now that the 2010 Arctic sea ice melt season is over, we can see how 2010 fits into the long-term trends Arctic Sea Ice Extent. This post shows an R Climate chart that I have made to look at the … Continue reading →
Example 8.8: more Hosmer and Lemeshow
This is a special R-only entry.In Example 8.7, we showed the Hosmer and Lemeshow goodness-of-fit test. Today we demonstrate more advanced computational approaches for the test.If you write a function for your own use, it hardly matters what it looks l...
India Australia test cricket matches over the years
If you're like me - chewing your nails, sitting in the same position for the last 2 hours to watch India battle Australia in the Mohali test match and enjoying the fascinating duel, watch how closely these two teams have fought in the past. This plot s...
India Australia test cricket matches over the years
If you're like me - chewing your nails, sitting in the same position for the last 2 hours to watch India battle Australia in the Mohali test match and enjoying the fascinating duel, watch how closely these two teams have fought in the past. This plot s...
Why R is better than Excel for teaching statistics
This was the topic of a recent conversation on the Australian and New Zealand R mailing list. Here is an edited list of some of the comments made. R is free. R is well-documented. R runs (really well) on *nix as well as Windows and Mac OS. R is open-source. Trust in the R software
S4 classes in R: printing function definition and getting help
I’m not very familiar with S4 classes and methods, but I assume it’s the recommended way to write new packages since it is newer than S3; this of course is open to debate. I’ll outline my experience of programming with S4 classes and methods in a later post, but in the mean time, I want... Read more »
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
