Here I present some functions I wrote to recreate some of the most common image effect available in all image editor.
They require the library rimage.
To load the image, use:
y <- read.jpeg("path")
plot(y)
rgb2sepia <- function(img){
iRed <- img*255
iGreen <- img*255
iBlue <- img*255
oRed <- iRed * .393...
Here I present some functions I wrote to recreate some of the most common image effect available in all image editor.
They require the library rimage.
To load the image, use:
y <- read.jpeg("path")
plot(y)
rgb2sepia <- function(img){
iRed <- img*255
iGreen <- img*255
iBlue <- img*255
oRed <- iRed * .393...
Part of the reason R has become so popular is the vast array of packages available at the cran and bioconductor repositories. In the last few years, the number of packages has grown exponentially! This is a short post giving steps on how to actually install R packages. Let’s suppose you want to install the 
Yes, I did just mix English, Spanish and French. And no, I living the “fishy” life, popular opinion to the contrary. Here’s the story. As someone who spends the majority of his time working online, with no oversight, I notice that I tend to drift a lot. I don’t play solitaire, or farm for virtual
This text 'pedagocially' explains how the bms function works code-wise and is intended for people who prefer to program customized adjustments of the bms package. bms is the workhorse function to do the sampling part of Bayesian Model Averaging in the...
I first got interested in epidemiology when I saw the famous John Snow chart (in a Tufte book, I think?) which pinpointed the pump which caused the 1854 cholera outbreak in London. For some reason I'd gotten the impression that this was essentially the birth of epidemiology as a discipline, but it's actually been around a lot longer than...
The San Francisco Bay Area chapter of the ACM is will hold its third data mining camp next Saturday (November 13) at the Ebay campus in San José. Like the previous camps, this will be a one-day "unconference"-style event, with an agenda developed ad-hoc on the day according to the interests of the attendee. With data scientists from the...
In this post I present a 5 panel trend charts which show the year-to-date anomaly trends for the 5 major global temperature anomaly series and a table that shows how 2010 YTD ranks over the entire record for each series. … Continue reading &#...
David Smith (alias @revodavid, see also on the Revolutions blog, here) pointed out that my R code was not easy to read (not only due to my computing skills, but mainly because of the typography I use). He suggested that I use the Pretty R tool (her...
Attended and thoroughly enjoyed Tuesday night’s New England R Users Group. We meet monthly in the Boston area to discuss the various ways in which people use and interact with the R programming language. Not surprisingly, we have a variety of industries represented. One of us is using R to recognize patterns in tissue samples 
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
