?make.names perhaps. On Fri, Sep 2, 2011 at 4:13 PM, Durant, James T. (ATSDR/DTEM/PRMSB) <h...@cdc.gov> wrote: > Greetings - > > I am working on some data that contain chemical names with air > concentrations, and I am creating a data frame with date/time and each > chemical having its own column. However, these are organic chemicals (e.g. > 1-butene, 2,3,4-trimethylbenzene etc). The package I am going to be using the > data with is openair, and many of the great functions require you to specify > a column name which does not seem to work with improper column names- e.g. > smoothTrend(mydata, pollutant="1-Butene" and smoothTrend(mydata, > pollutant=mydata[,"1-Butene"]) > > I was wondering if there was a function to automatically convert these > chemical names (with all sorts of numbers and minuses in the beginning) to > something openair can handle? Or am I going to be stuck recoding several > hundred chemical names in my database? > > VR > > Jim > > James T. Durant, MSPH CIH > Emergency Response Coordinator > US Agency for Toxic Substances and Disease Registry > Atlanta, GA 30341 > 770-378-1695 > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.