2636 search results for "GIS"

Cubism Horizon Charts in R

June 15, 2012
By
Cubism Horizon Charts in R

Like many, I have been in awe of the d3.js and cubism.js visualization packages created by Mike Bostock. Mike Bostock @ Square talks about Time Series Visualization from Librato on Vimeo. The charts are beautiful and extraordinarily functional, so I th...

Read more »

Pretty Correlation Map of PIMCO Funds

June 14, 2012
By
Pretty Correlation Map of PIMCO Funds

As PIMCO expands beyond fixed income, I thought it might be helpful to look at correlation of PIMCO mutual funds to the S&P 500.  Unfortunately due to the large number of funds, I cannot use the chart.Correlation from PerformanceAnalytics.&nbs...

Read more »

Mindoro Digital Elevation Map

June 14, 2012
By
Mindoro Digital Elevation Map

Saw a map produced by my previous student using a commercial GIS software.Using R raster package and data from diva-gis.org. I produced the same map

Read more »

#4 R: A powerful tool for the geochemist

June 14, 2012
By
#4 R: A powerful tool for the geochemist

  R is an incredibly powerful programming tool used by a large community of people who require an easy to use, light weight, FREE, and fundamentally awesome statistics package! I have recently discovered that R can be used by geologists whose IT skills are often pitied by their more computer literate geophysicist colleagues. Long story short

Read more »

Revolution Newsletter: June 2012

June 14, 2012
By

The most recent edition of the Revolution Newsletter is out. The news section is below, and you can read the full June edition (with highlights from this blog and community events) online. You can subscribe to the Revolution Newsletter to get it monthly via email. Revolution R Enterprise 6 Now Available! The latest release of Revolution R Enterprise brings...

Read more »

Performance with foreach, doSNOW, and snowfall

June 13, 2012
By

Is it just me, or does the performance of the foreach package with a doSNOW backend operating on a socket grid suck?Here at work, I am helping to setup a cluster of Windows machines for distributed R processing.  We have lots of researchers runnin...

Read more »

In case you missed it: May 2012 Roundup

June 13, 2012
By

In case you missed them, here are some articles from May of particular interest to R users. R tops the annual KDNuggets Data Mining Software poll for the first time. R 2.15.1 is scheduled for June 22. (Revolution R Enterprise 6, released on June 5, is based on 2.14.2.) A tutorial uses R, Hadoop, and the RHadoop project to...

Read more »

Simple network diagrams in R

June 12, 2012
By
Simple network diagrams in R

Why study networks? Development and aid projects these days are more and more often focussing on supporting networks, so tools to analyse networks are always welcome. In this post I am going to present a very easy-to-use package for the stat...

Read more »

Simple network diagrams in R

June 12, 2012
By
Simple network diagrams in R

Why study networks? Development and aid projects these days are more and more often focussing on supporting networks, so tools to analyse networks are always welcome. In this post I am going to present a very easy-to-use package for the stats program R which makes nice-looking graphs of these kinds of networks. In a recent

Read more »

Statistics of Drawdown–paper and post

June 11, 2012
By
Statistics of Drawdown–paper and post

Thank so much to Patrick Burns’ post Variability in maximum drawdown.  He starts with “Maximum drawdown is blazingly variable,” which I say is why money management is so blazingly difficult.  After spending a lot of time thinking about ...

Read more »