1243 search results for "Excel"

50 Shades of Grey Wordcloud

July 17, 2012
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50 Shades of Grey Wordcloud

Sometimes you just want to see what all the fuss is about. File this under the 'because I can' category: I proudly (?) present - a wordcloud produced from the text of E. L. James' "50 Shades of Grey".For a book which is getting all this press about bei...

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A simple Approximate Bayesian Computation MCMC (ABC-MCMC) in R

July 15, 2012
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A simple Approximate Bayesian Computation MCMC (ABC-MCMC) in R

Approximate Bayesian Computing and similar techniques, which are based on calculating approximate likelihood values based on samples from a stochastic simulation model, have attracted a lot of attention in the last years, owing to their promise to provide a general statistical technique for stochastic processes of any complexity, without the limitations that apply to “traditional”…

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Importing public data with SAS instructions into R

July 10, 2012
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Many public agencies release data in a fixed-format ASCII (FWF) format. But with the data all packed together without separators, you need a "data dictionary" defining the column widths (and metadata about the variables) to make sense of them. Unfortunately, many agencies make such information available only as a SAS script, with the column information embedded in a PROC...

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introduction to R: learning by doing (part 1)

July 9, 2012
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introduction to R: learning by doing (part 1)

Geography is often about statistics as it is the basis for fast exchange of information: providing a mean and standard deviation to the audience is often much easier then showing raw data: Learning a script language for this purpose can be a hard-ass work. But I think it is more often a need of practice.

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ggplot2 – much easier with JGR and Deducer

July 7, 2012
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ggplot2 – much easier with JGR and Deducer

In the last R-User meeting in Cologne, we had a discussion about using ggplot2 – and I gave a short introduction of how to use ggplot2 with JGR and Deducer. Basically, JGR is a Graphical User Interface for R, and Deducer is a kind of “data analysis plugin”, that also comes with a so-called “plot

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Health Care Costs – Part 1, "The Problem"

July 5, 2012
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Health Care Costs – Part 1, "The Problem"

The Problem In the United States, health care costs have been going up for a number of years, even when adjusted for inflation. Not unlike a runaway freight train, this rampant inflation cannot continue indefinitely without crashing. ...

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A tutorial on outlier detection techniques

July 4, 2012
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A tutorial on outlier detection techniques

by Yanchang Zhao, RDataMining.com There is an excellent tutorial on outlier detection techniques, presented by Hans-Peter Kriegel et al. at ACM SIGKDD 2010. It presents many popular outlier detection algorithms, most of which were published between mid 1990s and 2010, … Continue reading →

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To the Basics: Bayesian Inference on A Binomial Proportion

July 4, 2012
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To the Basics: Bayesian Inference on A Binomial Proportion

Think of something observable – countable – that you care about with only one outcome or another. It could be the votes cast in a two-way election in your town, or the free throw shots the center on your favorite...

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Combining ggplot Images

July 3, 2012
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Combining ggplot Images

The ggplot2 package provides an excellent platform for data visualization. One (minor) drawback of this package is that combining ggplot images into one plot, like the par() function does for regular plots, is not a straightforward procedure. Fortunately, R user Stephen Turner has kindly provided a function called “arrange” that does exactly this. The function,

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Graphics Artifacts from Quarterly Commentary

July 2, 2012
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Graphics Artifacts from Quarterly Commentary

For my Q2 2012 commentary, I tried multiple graphs to illustrate the disconnect of the US stock markets with the rest of the world.  I think I finally settled on this simple Excel bar graph populated by Bloomberg data, but I thought some might lik...

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