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Installing rgdal on a Mac

October 16, 2011 | Ian

So, installing rgdal, which is an important R package for spatial data analysis can be a bit of a pain on the mac. Here are two ways to make it happen.   The Easy Way In R run: install.packages('rgdal',repos="http://www.stats.ox.ac.uk/pub/RWin") The ... [Read more...]

Online

October 12, 2011 | songpants

Hello world, I decided to start blogging a bit to throw my weird R code examples at you ;-) Hope you’ll like it! Greetz, Janko [Read more...]

Open Street maps

October 8, 2011 | Ian

There have been some exciting developments in the Deducer ecosystem over the summer which should go into CRAN release in the next few months. Today I'm going to give a quick sneak peek at an Open Street Map - R connection with accompanying GUI. This post will just show the ... [Read more...]

Interactive charts with googleVis package and R

October 4, 2011 | Yanchang Zhao

Examples at the link below illustrate interactive charts created with the googleVis package and R. http://code.google.com/p/google-motion-charts-with-r/wiki/GadgetExamples Some amazing features are: a motion chart shows the changes over time, an AnnotatedTimeLine shows zoom-in/zoom-out view of time series, a TreeMap supports drill-down … Continue reading → [Read more...]

Visualizing Sampling Distributions

September 25, 2011 | bayesianbiologist

Teacher: “How variable is your estimate of the mean?” Student: “Uhhh, it’s not. I took a sample and calculated the sample mean. I only have one number.” Teacher: “Yes, but what is the standard deviation of sample means?” Student: “What do you mean means, I only have the one ... [Read more...]

Climate Reference Network: package crn 1.0

September 20, 2011 | Steven Mosher

I’ve just finished and uploaded another climate data package for R. This one focuses on  CRN the climate Reference Network Here is their home page   The package for now is really simple, but all of the packages  I’m building are getting simpler. In the end ( whenever that is ) ... [Read more...]

Children height and blood pressure z-scores

September 20, 2011 | nzcoops

Following on from some of my earlier posts, this is purely about, hopefully, saving some other people some time in putting this together. Height z-scores are required to then calculate the blood pressure z-scores. The CDC (Center for Disease Control … Continue reading → [Read more...]

rgdal + raster + RCurl = My next package

September 18, 2011 | Steven Mosher

This package has been a long time in the making.  In the end it’s more of a data package than a functional package, but pulling all the pieces together required me to learn some really cool packages: raster ( which I already knew ) rgdal and RCurl.  I’ll provide a ... [Read more...]

Datasets to Practice Your Data Mining

September 16, 2011 | Yanchang Zhao

There are many datasets available online for free for research use. Some of them are listed below. - The R Datasets Package: There are around 90 datasets available in the package. Most of them are small and easy to feed … Continue reading → [Read more...]

Forbush events

September 12, 2011 | Steven Mosher

As noted here there is a new paper linking Forbush events with changes in DTR. Simply, during a Forbush event  cosmic rays are modulated ( the flux reaching the earth decreases. The theory goes something like this. If GCRs play a role in cloud formation, then when they decrease you should ... [Read more...]

Visualizing Bayesian Updating

September 10, 2011 | bayesianbiologist

One of the most straightforward examples of how we use Bayes to update our beliefs as we acquire more information can be seen with a simple Bernoulli process. That is, a process which has only two  possible outcomes. Probably the most commonly thought of example is that of a coin ... [Read more...]

2011 Perth City to Surf Stats

September 6, 2011 | nzcoops

Like every year, August sees the thousands taking part in the Perth City to Surf, and with that comes the chance for some stats. Why? Curiosity more than anything, and to convince myself that my time in the 12km run … Continue reading → [Read more...]

Slides of 10+ talks at R Users Groups

August 29, 2011 | Yanchang Zhao

Links to slides of 10+ talks at R Users Groups in Australia are provided below. Slides of the talks are downloadable at the links, including R codes if any. MelbURN: Melbourne Users of R Network: Experiences with using R in … Continue reading → [Read more...]

Real-time data collection and analysis in class

August 28, 2011 | bayesianbiologist

As September draws nearer, my mind inevitably turns away from my lofty (and largely unmet) summer research goals, and toward teaching.  This semester I will be trying out a teaching technique using live data collection and analysis as a tool to encourage student engagement.  The idea is based on the ... [Read more...]

A first go at ‘manipulate’ in RStudio

August 26, 2011 | CL

Something I’m missing from R (especially coming from Mathematica) is the ability to quickly build interactive graphs, which I find very useful for getting a good intuition of the impact of parameters on a mathematical function. Richie Cotton’s post about … Continue reading → [Read more...]

Examples on Clustering with R

August 25, 2011 | Yanchang Zhao

R code examples on various clustering techniques are available as “Clustering in R” in Chapter 4 of R & Bioconductor Manual by Thomas Girke, UC Riverside. It provides R examples on - Hierarchical Clustering, including tree cutting/coloring and heatmaps, - … Continue reading → [Read more...]
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