954 search results for "MAPS"

rgbif changes in v0.4

November 21, 2013
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The Global Biodiversity Information Facility (GBIF) is a warehouse of species occurrence data - collecting data from a lot of different sources. Our package rgbif allows you to interact with GBIF from R. We interact with GBIF via their Application Programming Interface, or API. Our last version on CRAN (v0.3) interacted with the older version of their API -...

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Calling R from the ERP – A dirty little hack

November 19, 2013
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Calling R from the ERP – A dirty little hack

Since I joined SAP around 2 years ago, I simply stopped using ABAP…even when I use it for almost 11 years when I was a consultant…A week ago, I was thinking about writing a new blog…something nice…some hacky…something that would allow me to just rest and don’t blog for the rest of the year…I thought about ERP and R…while...

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Towards the R package emdat: Losses from Global Disasters, Part 1

November 18, 2013
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The International Disaster Database, EM-DAT from the Center for Research on the Epidemiology of Disasters (CRED, Belgium) is often used as a reference for losses on human life and property resulting from natural and man-made disasters. This databa...

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Visualising Structure in Topic Models

November 11, 2013
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Visualising Structure in Topic Models

How exactly should we visualise topic models to get an overview of how topics relate to each other? This post is a brief lit review of that debate - I realise the subject matter is sooo last year. I also present my chosen solution to the dilemma: I use dendrograms to position topic, and add a...

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Hurricanes in South Carolina

November 10, 2013
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Hurricanes in South Carolina

In a recent post, I discussed the occurrence of hurricanes in the North Atlantic basin. The data comes from the National Oceanic and Atmospheric Association, a member of the US federal government. The data spans a bit more than 150 years. In that post, I make the observation that the data supports a model wherein

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Creating your Jekyll-Bootstrap powered blog for R blogging

November 9, 2013
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Creating your Jekyll-Bootstrap powered blog for R blogging

As you might have noticed, I recently decided to move Fellgernon Bit from Tumblr to GitHub. There are a couple of reasons why I made this change. I wanted a more professional-looking blog. There are not many R blogs on Tumblr, and well, long text posts are not really meant for Tumblr. Better code highlighting. I had enabled R code highlighting...

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Generating functions

November 8, 2013
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Generating functions

Today, I wanted to publish a post on generating functions, based on discussions I had with Jean-Francois while having our coffee after lunch a couple of times already. The other reason is that I publish my post while my student just finished their Probability exam (and there were a few questions on generating functions). A short introduction (back on...

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Working with hdf files in R – Example: Pathfinder SST data

November 8, 2013
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Working with hdf files in R – Example: Pathfinder SST data

Following  a question that I posted on stackoverflow.com, I recieved the great advice to use the Bioconductor rhdf5 package to work with HDF5 files. The package is not located on CRAN, but can be sourced from the Bioconductor website: source("http://bioconductor.org/biocLite.R")biocLite("rhdf5") Created by Pretty...

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R jobs (September, October 2013)

November 5, 2013
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R_jobs

R-bloggers is offering an “R jobs” post, that will be published once every month (or other month). If you are interested in offering a job to be posted on r-bloggers, please e-mail me at: [email protected] (please write in the subject line the text “R job” so I could have easy e-mail filtering on it ). statistics. com Occasional part-time...

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Spatial Clustering With Equal Sizes

November 4, 2013
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Spatial Clustering With Equal Sizes

This is a problem I have encountered many times where the goal is to take a sample of spatial locations and apply constraints to the algorithm.  In addition to providing a pre-determined number of K clusters a fixed size of elements needs to be held constant within each cluster. An application of this algorithm is

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