[R] how to make monthly time series out of daily

Reto Baumgartner reto.baumg at gmail.com
Wed May 12 20:37:31 CEST 2010

I am using the Rmetrics package and would like to convert a daily
price time serie into a monthly one. In SPlus I could use:
aggregateSeries(timeSerie, by="months",FUN=first).

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