358 search results for "sweave"

In case you missed it: March Roundup

April 13, 2010
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In case you missed them, here are some articles from last month of particular interest to R users. We reviewed a special report in The Economist on the "Data Deluge" and the growing importance of statistical analysis in business. One section mentioned R specifically. We announced that Zack Urlocker, formerly responsible for engineering and marketing for the open-source database...

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Looking for Software Paths in Windows Registry

March 28, 2010
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Looking for Software Paths in Windows Registry

hen we want to call external programs in R under Windows, we often need to know the paths of these programs. For instance, we may want to know where ImageMagick is installed, as we need the convert (convert.exe) utility to convert images to other formats, or where OpenBUGS is installed because we need this path

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Font Families for the R PDF Device

March 24, 2010
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otivated by the excellent R package pgfSweave, I begin to notice the font families in my graphs when writing Sweave documents. The default font family for PDF graphs is Helvetica, which is, in most cases (I think), inconsistent with the LaTeX font styles. Some common font families are listed in ?postscript, and we can take

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Updated Site Map for Jeromy Anglim’s Blog Psychology and Statistics

March 23, 2010
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Every Six months or so I like to update the Site Mapfor my blog jeromyanglim.blogspot.com. Thus, if you're new to the blog, The Site Map provides an overview of previous blog content organised by topic. RSS Feed: http://feeds.feedburner.com/jeromyang...

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Updated Site Map for Jeromy Anglim’s Blog Psychology and Statistics

March 23, 2010
By

Every Six months or so I like to update the Site Mapfor my blog jeromyanglim.blogspot.com. Thus, if you're new to the blog, The Site Map provides an overview of previous blog content organised by topic. RSS Feed: http://feeds.feedburner.com/jeromyang...

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Using Regular Expressions in R: Case Study in Cleaning a BibTeX Database

March 9, 2010
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Using Regular Expressions in R: Case Study in Cleaning a BibTeX Database

I recently had to clean up a BibTeX database containing around 1,000 references. One of the clean up tasks was to ensure that page numbers were separated with en-dashes as opposed to hyphens. This post sets out how I used regular expressions in R to co...

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principal components and image reconstruction

March 9, 2010
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principal components and image reconstruction

Jeff Lewis at UCLA told me he teaches principal components with an image reconstruction example. This got me inspired to try it myself. A snapshot appears below, showing how the image quality improves quickly with a relatively small number of principal components. A full, Sweaved write up is here, making use of the biOps package

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Package Update Roundup: Dec 2009 – Jan 2010

February 9, 2010
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A special double edition of the Package Update Roundup this month! This is a list of new or updated packages that were released for R in December and January, as announced on the r-packages mailing list. To include other updates on this list, please email David Smith. For a complete list of all updates on CRAN, see the CRANberries...

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Package Update Roundup: Nov 2009

December 8, 2009
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This is a list of new or updated packages that were released for R in November, as announced on the r-packages mailing list. To include other updates on this list, please email David Smith. For a complete list of all updates on CRAN, see the CRANberries archive for November 2009. Follow package name links for ratings and other information...

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new R package : highlight

November 22, 2009
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I finally pushed highlight to CRAN, which should be available in a few days. The package uses the information gathered by the parser package to perform syntax highlighting of R code The main function of the package is highlight, which takes a numb...

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