search for: lithclasses

...;sand'], Conductivity[LithClass=='sand']) (ad nauseum... how can I loop through them all?) and ... > boxplot(Conductivity[LithClass=='clay']) > boxplot(Conductivity~LithClass) # whole set of boxplots on one diagram, but # what if want to exclude one or two of the LithClasses? and ... > pairs(c(tc[10],tc[2],tc[11],tc[12])) this is as advanced as I've got. Any tips would be greatly appreciated. Ben. [[alternative HTML version deleted]]

I am having difficulty understanding how I would constrain a data set by filtering out 'records' based on certain criteria. Using SQL I could query using 'select * from my.data where LithClass in ('sand', 'clay')' or some such. Using subset, there seem to be ghosts left behind (that is, all of the LithClass *.Labels* remain after subset) > dput(tcc)