My last two posts have been about mixture models, with examples to illustrate what they are and how they can be useful. Further discussion and more examples can be found in Chapter 10 of Exploring Data in Engineering, the Sciences, and ...
Posts Tagged ‘ R packages ’
New CRAN package for R package development: devtools
Yesterday, Hadley Wickham released his new package “devtools” at the CRAN repository. A great R package which supports the development process of R packages. R Packages are the fundamental unit of reproducible R code. The development of R packages is a complex topic and requires several additional tasks next to R programming. For example,...
another look at CRAN Task Views
We've been impressed with how helpful the CRAN Task Views are in guiding us in R as we wend our way through the huge number of add-on packages (3021 as of May, 2011). These are web pages that are maintained by volunteers with expertise in a specified ...
R GUI now offers interactive graphics – Deducer 0.4-2 connects with iplots
Earlier today, Ian Fwllows has announced the release of Deducer 0.4-2 and DeducerExtras 1.2 to CRAN (I copy his announcement here): Deducer 0.4-2 contains a few bug fixes, and an interface to the iplots package. With the new iplots interface it is now possible to do interactive plots with Deducer. An introductory example screen...
Using the {plyr} (1.2) package parallel processing backend with windows
Hadley Wickham has just announced the release of a new R package “reshape2” which is (as Hadley wrote) “a reboot of the reshape package”. Alongside, Hadley announced the release of plyr 1.2.1 (now faster and with support to parallel computation!). Both releases are exciting due to a significant speed increase they have now gained. Yet in...
R Chart
Been meaning to write this for awhile...An R-Chart is a statistical quality assurance tool used to determine if a process is stable (and predictable). It is intended to maintain and improve the quality of a process (a more formal definition is av...
Make R speak SQL with sqldf
The R community is unique as programming communities go. Many users of R come from academia and have a relatively extensive mathematical background. The R community has developed in relative isolation from some other areas of programming th...
CRAN Search
Here's a ditty to search the cran R packages by descriptioncranSearch = function(q=''){ library(XML) u<-'http://cran.r-project.org/web/packages/' d<-readHTMLTable(u) d]$V1 lib.names <-...
Plotting BP Oil Spill Testing Data using R
The Deepwater Horizon Incident is in the U.S. headlines and on many peoples minds. The folks over at Revolution Analytics were even discussing this subject today. Several government sites including the NOAA have sections dedicated to the problem. In...
The 1000 most-visited sites analyzed using R
Ever wondered about which Computer and Electronics web sites get the most Page Views? Based upon data recently published by Google:The R program to create this graph is as follows:library(XML)# URL for the Google Datau="http://www.google.com/adplanner...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).