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Published January 10, 2007 | public
Journal Article Open

Using R-based VOStat as a low resolution spectrum analysis tool


We describe here an online software suite VOStat written mainly for the Virtual Observatory, a novel structure in which astronomers share terabyte scale data. Written mostly in the public-domain statistical computing language and environment R, it can do a variety of statistical analysis on multidimensional, multi-epoch data with errors. Included are techniques which allow astronomers to start with multi-color data in the form of low-resolution spectra and select special kinds of sources in a variety of ways including color outliers. Here we describe the tool and demonstrate it with an example from Palomar-QUEST, a synoptic sky survey.

Additional Information

Link to the VOStat online service for statistics which is used in the paper. Special Volume on Spectroscopy and Chemometrics in R, Katharine M. Mullen and Ivo H.M. van Stokkum, Guest Editors. Journal of Statistical Software, Volume 18, 2007, Issue 1 http://www.jstatsoft.org/index.php?vol=18.


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