Before reading water chemistry into a data frame I removed all missing data. Yet when I try to run cenros() to summarize a specific chemical I get an error that I do not understand:
with( subset(chem, param=='Ag'), cenros(quant,ceneq1) ) Error in lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) : NA/NaN/Inf in 'y' I would like to learn what I did incorrectly so I can avoid these errors in the future. The data frame structure is str(chem) 'data.frame': 120309 obs. of 8 variables: $ site : Factor w/ 65 levels ";Influent","D-1",..: 2 2 2 2 2 2 ... $ sampdate: Date, format: "2007-12-12" "2007-12-12" ... $ preeq0 : logi TRUE TRUE TRUE TRUE TRUE TRUE ... $ param : Factor w/ 37 levels "Ag","Al","Alk_tot",..: 1 2 8 17 3 9 ... $ quant : num 0 0.106 1 231 231 0.011 0 0.002 0 100 ... $ ceneq1 : logi FALSE FALSE TRUE FALSE FALSE FALSE ... $ floor : num 0 0.106 0 231 231 0.011 0 0 0 100 ... $ ceiling : Factor w/ 3909 levels "0.000","0.000)",..: 1 116 841 1771 ... I ran dput() on the data frame but cannot make sense of the output (a 5.5M ASCII text file). Pointers appreciated. Rich ______________________________________________ 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.
