2447 search results for "gis"

Defaults, Lists and Classes: A Functional Post

May 20, 2011
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Defaults, Lists and Classes: A Functional Post

In this post, I demonstrate a couple of useful tricks to writing functions in R. The context is a function I wrote called called samp() that allows for an easy demonstration of sampling distribution properties.DefaultsBy default, this function draws K...

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Hacking the Kinect with R

May 20, 2011
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I was browsing through the draft abstract booklet for this year's worldwide R user conference useR! 2011, and noticed this abstract: KinectR – Kinect interface to R Landon Jensen Microsoft launched the Kinect for Xbox 360 in late 2010 and it quickly broke records as the fastest selling consumer electronics device in history (8 million units sold in the...

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Great circles, raster, sp and lattice

Great circles, raster, sp and lattice

Recently I found a post at FlowingData with a detailed tutorial to map connections with great circles with R. The tutorial of FlowingData is excellent, but I feel more comfortable with the sp classes and methods, and with the lattice and latticeExtra packages. Besides, I want to use the free spatial data available from the

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10 reasons why you should learn R

May 20, 2011
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10. Can't crack that hard Sudoku problem?? Use R!9. Want to pick a skill that will give you an early adopter advantage?? Learn R! It is the leading open source statistical and data analysis programming language, and is heating up! 8. Need to ...

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10 reasons why you should learn R

May 20, 2011
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10. Can't crack that hard Sudoku problem?? Use R!9. Want to pick a skill that will give you an early adopter advantage?? Learn R! It is the leading open source statistical and data analysis programming language, and is heating up! 8. Need to ...

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Porting Stata-like Marginal Effects to LaTeX

May 19, 2011
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Porting Stata-like Marginal Effects to LaTeX

The TimeSeriesIreland Blog posted an excellent start on a function that automatically computes marginal effects for probit and logit models. As I have always wanted an easy-to-use function that computes and reports marginal effects in R, I was elated ...

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Porting Stata-like Marginal Effects to LaTeX

May 19, 2011
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Porting Stata-like Marginal Effects to LaTeX

The TimeSeriesIreland Blog posted an excellent start on a function that automatically computes marginal effects for probit and logit models. As I have always wanted an easy-to-use function that computes and reports marginal effects in R, I was elated ...

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Stata-like Marginal Effects for Logit and Probit Models in R

May 17, 2011
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Stata-like Marginal Effects for Logit and Probit Models in R

Although this blog’s primary focus is time series, one feature I missed from Stata was the simple marginal effects command, ‘mfx compute’, for cross-sectional work, and I could not find an adequate replacement in R. To bridge this gap, I’ve written a (rather messy) R function to produce marginal effects readout for logit and probit

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A simple function for plotting phylogenies in ggplot2

May 17, 2011
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A simple function for plotting phylogenies in ggplot2

I wrote a simple function for plotting a phylogeny in ggplot2. However, it only handles a 3 species tree right now, as I haven't figured out how to generalize the approach to N species.Any ideas on how to improve this?

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R tips from around the web…

May 17, 2011
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The great thing of R, is that the number of available resources on the web is increasing dramatically. If you cannot afford expensive books, or you are looking straight questions or some tutorials you will find almost anything you need. Here's my short...

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