2251 search results for "map"

R and Salesforce

February 25, 2012
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R and Salesforce

Introduction R is widely used among scientists and statisticians to perform statistical analysis while Salesforce.com is one of the leading CRM software packages used for Marketing and Salesforce automation. Salesforce.com contains vital information regarding Leads, Customers, Contacts, Opportunities and Cases. Currently this data is mainly used for operational purposes by Sales and Marketing professionals. How

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Why I don’t like Dynamic Typing

February 25, 2012
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A lot of people consider the static typing found in languages such as C, C++, ML, Java and Scala as needless hairshirtism. They consider the dynamic typing of languages like Lisp, Scheme, Perl, Ruby and Python as a critical advantage (ignoring other features of these languages and other efforts at generic programming such as the Related posts:

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What to do about publishing data?

February 22, 2012
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What to do about publishing data?

There seems to be a scale that’s tipping at the moment: Data or code that should be published* is often not.  This should seem like an odd statement for anyone in science, but it should be easy to show that most publications … Continue reading →

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Diamonds vs. water smackdown in playitbyr-powered podcast

February 22, 2012
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Apparent Reason, my new monthly podcast, is a boisterous and non-technical discussion of economics and statistics. In that format I don't have the luxury of showing charts and graphs to complement my discussion, so I use the playitbyr package to represent the data as sound. (Apparently February is a great month to start R-related podcasts!

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Big data seminar in London on 1 March 2012

February 20, 2012
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Big data seminar in London on 1 March 2012

Removable disk packs in 1975Source: Wikipedia, via Deutsche Fotothek  David Chan from City University is organising an interdisciplinary symposium on tackling the ‘Big Data’ challenge on 1 March 2012.It is an open seminar trying to bring ...

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Simplifying spatial polygons in R

February 20, 2012
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Simplifying spatial polygons in R

Polygon simplification is something others have written about, using R packages such as shapefiles. This explores how package ‘rgeos’ uses the Ramer–Douglas–Peucker algorithm, a method commonly used in GIS systems for simplifying shapefiles. It works by imposing a deviation tolerance … Continue reading →

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Visualising Twitter User Timeline Activity in R

February 17, 2012
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Visualising Twitter User Timeline Activity in R

I’ve largely avoided “time” in R to date, but following a chat with @mhawksey at #dev8d yesterday, I went down a rathole last night exploring a few ways of visualising a Twitter user timeline and as a result also had a quick initial play with some time handling features of R, such as timeseries objects,

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Rcpp 0.9.10

February 17, 2012
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A new release 0.9.10 of Rcpp is now on CRAN and in Debian. This is mostly internal release with a little bit of code reorgination (some of which will be used by a forthcoming RcppArmadillo release), some changes to make R CMD check happy, and one or ...

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Generating Twitter Wordclouds in R (Prompted by an Open Learning Blogpost)

February 15, 2012
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Generating Twitter Wordclouds in R (Prompted by an Open Learning Blogpost)

A couple of weeks ago I saw a great example of an open learning blogpost from @katy_bird: Generating a word cloud (or not) from a Twitter hashtag. It described the trials and tribulations associated with trying to satisfy a request for the generation of a wordcloud based on tweets associated with a specific Twitter hashtag.

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R for Quants, Part I (B)

February 13, 2012
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R for Quants, Part I (B)

This is a continuation of the R workshop I’m teaching at the Baruch MFE program. This section discusses the programming …Continue reading »

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