[R] One question

[dowlingr@uoguelph.ca]

Hello everyone,
I am a new R software user.  I have been using the R package "com.braju.sma" in 
order to analyze microarray data.  I have one question regarding analysis using 
this package.  This type of analysis uses the expression ratio of red 
color/green color (R/G) and I was wondering if it was possible to switch this 
around so that the expression ratio was green color/red color (G/R).
Any help that you could give me would be greatly appreciated,
Thanks

Jimmy