2713 search results for "gis"

In case you missed it: February roundup

March 10, 2010
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In case you missed them, here are some articles from last month of particular interest to R users. We announced the availability on YouTube of "What is R", a 4-part video based on a recent webcast I hosted. We announced a webinar I hosted on REvolution's debugger for R (a recorded replay is now available). We linked Salvio Rodrigues...

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Cluster analysis of what the world eats

March 9, 2010
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Cluster analysis of what the world eats

Keeping with the theme of the post below, I used a clustering algorithm to group the different countries according to what they eat. I simply played around with the number of clusters until I got something I thought resembled reality, so don't interpre...

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Cluster analysis of what the world eats

March 9, 2010
By
Cluster analysis of what the world eats

Keeping with the theme of the post below, I used a clustering algorithm to group the different countries according to what they eat. I simply played around with the number of clusters until I got something I thought resembled reality, so don't interpre...

Read more »

Weird dietary habits in the US

March 8, 2010
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Weird dietary habits in the US

Using this database of food consumption data the blog Canibais e Reis kindly put together, I calculated all values for which the US was at least 2 standard deviations from the world average. Here are the outliers in standard deviations from the w...

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Weird dietary habits in the US

March 8, 2010
By
Weird dietary habits in the US

Using this database of food consumption data the blog Canibais e Reis kindly put together, I calculated all values for which the US was at least 2 standard deviations from the world average. Here are the outliers in standard deviations from the w...

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R: Eliminating observed values with zero variance

March 8, 2010
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R: Eliminating observed values with zero variance

I needed a fast way of eliminating observed values with zero variance from large data sets using the R statistical computing and analysis platform. In other words, I want to find the columns in a data frame that has zero variance. And as fast as possible, because my data sets are large, many, and changing fast....

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R: Eliminating observed values with zero variance

March 8, 2010
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R: Eliminating observed values with zero variance

I needed a fast way of eliminating observed values with zero variance from large data sets using the R statistical computing and analysis platform. In other words, I want to find the columns in a data frame that has zero variance. And as fast as possible, because my data sets are large, many, and changing fast....

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Accessing Climate Change Data and a Custom Panel Function for Filled Polygons

March 4, 2010
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Accessing Climate Change Data and a Custom Panel Function for Filled Polygons

GCS Model Grids Recently finished some collaborative work with Vishal, related to visualizing climate change data for the SEI. This project was funded in part by the California Energy Commission, with additional technical support from the Google Earth Team. One of the final products was an...

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How to use mcsm

February 27, 2010
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How to use mcsm

Within the past two days, I received this email Dear Prof.Robert I have just bought your recent book on Introducing Monte Carlo Methods with R.  Although I have checked your web page for the R programs (bits of the code in the book, codes for generating the figures and tec – not the package available

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Steve Miller on R at Predictive Analytics World

February 26, 2010
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At the Information Management blog, Steve Miller has provided two great reviews (here and here) of last week's Predictive Analytics World conference, including a recap of the Bay Area User's Group meeting featuring John Chambers. (My personal highlight from John's talk? A photograph of the very first sketch of what was to become the S system, which ultimately begat...

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