The tikzDevice package provides a new graphics device for R which enables direct output of graphics in a LaTeX-friendly way. The device output consists of files containing instructions for the TikZ graphics language and may be imported directly into LaTeX documents using the \input{} command. The beta version of tikzDevice is now available here. An
Monthly Archives: July 2009
I know it’s been so long…
Hey,I know it's been so long since last time I posted something in here, but I was really busy with my thesis and some other stuff, but now that I have more time I promise I'll post some interesting stuff in here, by the way, I found such an Interestin...
I know it’s been so long…
Hey,I know it's been so long since last time I posted something in here, but I was really busy with my thesis and some other stuff, but now that I have more time I promise I'll post some interesting stuff in here, by the way, I found such an Interestin...
Corpus Linguistics with R, Day 2
R Lesson 2 text gsub ("second", "third", text) SEARCH-REPLACE-SUBJECT "This is a first example sentence." "And this is a third example sentence." > gsub ("n", "X", text) "This is a first example seXteXce." "AXd this is a secoXd example seXteXce." > gsub ("is", "was", text) "Thwas was a first example
Corpus Linguistics with R, Day 1
(This post documents the first day of a class on R that I took at ESU C&T. I is posted here purely for my own use.) R Lesson 1 > 2+3; 2/3; 2^3 5 0.6666667 8 --- Fundamentals - Functions > log(x=1000, base=10) 3 --- (Formals describes the syntax of other
Wilcoxon-Mann-Whitney rank sum test (or test U)
Comparison of the averages of two independent groups of samples, of which we can not assume a distribution of Gaussian type; is also known as Mann-Whitney U-test.
You want to see if the mean of goals suffered by two football teams over the years is the same. Are below the number of goals suffered by each team in 6 games...
Wilcoxon-Mann-Whitney rank sum test (or test U)
Comparison of the averages of two independent groups of samples, of which we can not assume a distribution of Gaussian type; is also known as Mann-Whitney U-test.
You want to see if the mean of goals suffered by two football teams over the years is the same. Are below the number of goals suffered by each team in 6 games...
Beautiful Data
O'Reilly's recent publication Beautiful Data has a chapter by Jeff Jonas which is enough reason in itself for me to recommend it. The chapter, Data Finds Data, is also available as a PDF download.
Beautiful Data
O'Reilly's recent publication Beautiful Data has a chapter by Jeff Jonas which is enough reason in itself for me to recommend it. The chapter, Data Finds Data, is also available as a PDF download.
R Snippet for Sampling from a Dataframe
It took me a while to figure this out, so I thought I'd share. I have a dataframe with millions of observations in it, and I want to estimate a density distribution, which is a memory intensive process. Running my kde2d function on the full dataframe throws and error -- R tries to allocate a vector that...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
