4494 search results for "git"

The PISA2009lite package is released

June 20, 2013
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The PISA2009lite package is released

This post introduces a new R package named PISA2009lite. I will show how to install this package, what is inside and how to use it. Introduction PISA (Programme for International Student Assessment) is a worldwide study focused on measuring performance of 15-year-old school pupils. More precisely, scholastic performance on mathematics, science and reading is measured

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Quickly read Excel (xlsx) worksheets into R on any platform

June 20, 2013
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I wrote a couple days about about importing Excel files into R. There are lots of ways to do this, but all the ways that use only R have drawbacks (as I outlined in my last post), and all the other ways require installation of programs other than R. I’m not opposed to using programs

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Update to curves2d()

June 20, 2013
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(This article was first published on geomorph, and kindly contributed to R-bloggers) Dear morphometricians, Below you will find an update to our function for digitizing curves in 2d: curves2d(). This solves a problem with the function plotting landmarks and semilandmarks out of sequence. To use it, you can "source()" the code from a directory, or copy and paste it...

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literacy rates using semantics and R

June 19, 2013
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literacy rates using semantics and R

(This article was first published on - R, and kindly contributed to R-bloggers) Somehow I stumbled into the world of linked open data trying to pull information easily off of a wikipedia page without having to write a customer scrapper. Enter in dbpedia, semantic technologies and some wonderful R packages take care of the back-end coding. The Research Group...

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Spatial Overlays with R – Retrieving Polygon Attributes for a Set of Points

June 19, 2013
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A short tutorial for spatial overlays using R-GIS..library(sp)library(dismo)# spatial dataalt gadm # viewplot(alt)plot(gadm, add=T)# some addressespts # make it spatialcoords spdf_pts # assign CRS/projectionproj4string(spdf_pts) # check datastr(spdf_pts)# plot it on topplot(spdf_pts, cex = 2, col = 2, add = T)# do an intersection (points in polygon)# yielding the polygon's attribute dataover(spdf_pts, gadm)

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R Plotting Financial Time Series

June 19, 2013
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In my little world of finance, data almost always is a time series.  Through both quiet iteration and significant revolutions, the volunteers of R have made analyzing and charting time series pleasant.  As a mini-tribute to all those who have...

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Visualising Crime Hotspots in England and Wales using {ggmap}

June 18, 2013
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Visualising Crime Hotspots in England and Wales using {ggmap}

Two weeks ago, I was looking for ways to make pretty maps for my own research project. A quick search led me to some very informative blog posts by Kim Gilbert, David Smith and Max Marchi. Eventually, I Google'd the excellent crime weather map exa...

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My R package’s worldmap of downloads!

June 18, 2013
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My R package’s worldmap of downloads!

Last week, a colleague draw my attention on this new log files from the Rstudio cloud CRAN mirror, through a post from Tal Galili. This CRAN mirror is a little different, as it uses Amazon CloudFront to deliver the downloads … Continue reading →

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Printing R help files in the console or in knitr documents

June 18, 2013
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Yesterday, I was creating a knitr document based on a script, and was looking for a way to include content from an R help file. The script, which was a teaching document, had a help() command for when the author wanted to refer readers to R documentation. I wanted that text in my final document, though. There’s no...

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PivotalR Improves the Scalability and Performance of In-Database Analytics

June 18, 2013
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PivotalR Improves the Scalability and Performance of In-Database Analytics

One of the greatest challenges while working with big datasets concerns the need to move information out of storage for analysis. To this end, the recent announcement of PivotalR 0.1 extends Pivotal HD's capabilities, allowing users of the statistical programming language R to perform in-database analytics without leaving the command line.

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