So if you had a robot that was an expert at botany - would you have a bot botanist? Among other things, it would need to to distinguish flowers through vision and image processing, and be able to classify various kinds of plants based upon specif...
1229 search results for "ggplot2"
Bot Botany – K-Means and ggplot2
So if you had a robot that was an expert at botany - would you have a bot botanist? Among other things, it would need to to distinguish flowers through vision and image processing, and be able to classify various kinds of plants based upon specif...
Better than Average
The NIST's The Engineering Statistics Handbook includes an Introduction to Time Series Analysis which provides a great way of demonstrating how R can be used to make such calculations. This post replicates the analys...
Better than Average
The NIST's The Engineering Statistics Handbook includes an Introduction to Time Series Analysis which provides a great way of demonstrating how R can be used to make such calculations. This post replicates the analys...
Even Simpler Multivariate Correlated Simulations
So after yesterday’s post on Simple Simulation using Copulas I got a very nice email that basically begged the question, “Dude, why are you making this so hard?” The author pointed out that if what I really want is a Gaussian correlation structure for Gaussian distributions then I could simply use the mvrnorm() function from
Sweet bar chart o’ mine
Last week I was asked to visualise some heart rate data from an experiment. ... The standard way of displaying a time series (that is, a numeric variable that changes over time) is with a line plot. ... The experimenters, however, wanted a bar chart. I hadn't considered this use of a barchart before, so it was interesting...
US House Election Results Visualized Five Ways
The Democratic major-party vote share of US House elections 2002-2008 visualized 5 different ways.
GEO database: curation lagging behind submission?
I was reading an old post that describes GEOmetadb, a downloadable database containing metadata from the GEO database. We had a brief discussion in the comments about the growth in GSE records (user-submitted) versus GDS records (curated datasets) over time. Below, some quick and dirty R code to examine the issue, using the Bioconductor GEOmetadb 
Fractals in R
Atte Tenkanen had a blog on fractals using R for a time. Much of his source code is still available online. To produce his version of the Mandelbrot set:source('http://users.utu.fi/attenka/mandelbrot_set.R')Fractals (such...
Fractals in R
Atte Tenkanen had a blog on fractals using R for a time. Much of his source code is still available online. To produce his version of the Mandelbrot set:source('http://users.utu.fi/attenka/mandelbrot_set.R')Fractals (such...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
