Monthly Archives: March 2012

tcp timelines with ggplot2

March 28, 2012
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tcp timelines with ggplot2

I’ve come across the need to analyze TCP flows from time to time, and while scripts like flowtime and EasyTimeline are nice, they aren’t really, well, pretty.  ggplot2, on the other hand is, and it turns out to be really easy to … Continue reading →

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SCRIPT for NIR "DEMO" Tutorial – 001

March 28, 2012
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SCRIPT for NIR "DEMO" Tutorial – 001

########### RAW NIR Demo Data##################################demo<-read.table("demo.txt",header=TRUE)VIS<-demoVIS<-as.matrix(VIS)NIR<-demoNIR<-as.matrix(NIR)ALL<-demoALL<-as.matrix(ALL)Protein<-demo...

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Bigger data, better intelligence for government

March 28, 2012
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Tomorrow (at 2PM Eastern on Thursday), the White House White House Office of Science and Technology Policy will host a 90-minute forum on Challenges and Opportunities in Big Data. You can watch the event live at the previous link, and see federal government science heads from OSTP, NSF, NIH, DoE, DoD, DARPA and USGS outline how their agencies are...

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U.S. Soldiers Died from What?

March 28, 2012
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U.S. Soldiers Died from What?

Prior to WWII, the majority of soldiers died from disease and infection. The Invisible Enemy Often Killed You Before Your Political Enemy Imagine the scene: thousands of military men laying on cots, makeshift beds, or the floor ...

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RcppArmadillo 0.2.37 and 0.2.38 released, but not on CRAN

March 28, 2012
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Conrad is readying his fabulous Armadillo C++ template library for linear algebra for a new 3.0.0 release, and started to make pre-releases. His version 2.99.1 came about a good week ago, it took us a few days to make a small required change in RcppAr...

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Go faster R for Google’s summer of code 2012

March 28, 2012
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The R Foundation has been accepted for Google’s summer of code and I thought I would suggest a few ideas for projects. My interests are in optimization and source code analysis, so obviously the suggestions involve these topics. There are an infinite number of possible optimizations that can be applied to code (well, at least

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useR!2012 – student’s scholarship for attending the conference

March 28, 2012
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Good news for students wishing to attend the annual useR conference (useR!2012). Through generous sponsor support (ASA, and RStudio), a limited number of student scholarships1 are available for reimbursement of travel and registration costs up to $500. The allocation will be based on merit and need. Students who wish to apply should send an application to Tatsuki Koyama ([email protected]) no later than...

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Applying Same Changes to Multiple Dataframes

March 28, 2012
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Applying Same Changes  to Multiple Dataframes

How to apply the same changes to several dataframes andsave them to CSV: # a dataframea <- data.frame(x = 1:3, y = 4:6)# make a list of several dataframes, then apply function (change column names, e.g.):my.list <- list(a, a)my.list <- lapply(...

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lubridate: working with date and time in R

March 28, 2012
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lubridate: working with date and time in R

Working with date and time in R is sometimes tricky. Today I gave lubridate a try and was surprised on how easy it can be. Lubridate is a available on git and on CRAN. There is also a good introduction … Continue reading →

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AQP Kick-Start

March 27, 2012
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A fun kick-starter for anyone interested in working with soil profile data in R, via AQP. See in-line comments for details. Up next, profile slicing and aggregation. read more

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