[R] Chemical Names in Data Frames

[Gustavo Carvalho]

?make.names perhaps.

On Fri, Sep 2, 2011 at 4:13 PM, Durant, James T. (ATSDR/DTEM/PRMSB)
<hzd3 at 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
>
>
>
>
>
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