Re: [R] Chemical Names in Data Frames

2011-09-02 Thread Spencer Graves
possibly with unique = TRUE: make.names(c("'", "'")) [1] "X." "X." make.names(c("'", "'"), unique=TRUE) [1] "X." "X..1" Spencer On 9/2/2011 12:28 PM, Gustavo Carvalho wrote: ?make.names perhaps. On Fri, Sep 2, 2011 at 4:13 PM, Durant, James T. (ATSDR/DTEM/PRMSB) wrote: Gree

Re: [R] Chemical Names in Data Frames

2011-09-02 Thread Gustavo Carvalho
?make.names perhaps. On Fri, Sep 2, 2011 at 4:13 PM, Durant, James T. (ATSDR/DTEM/PRMSB) 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, th

Re: [R] Chemical Names in Data Frames

2011-09-02 Thread David Winsemius
On Sep 2, 2011, at 3:13 PM, Durant, James T. (ATSDR/DTEM/PRMSB) 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