IsMonotonicallyIncreasing {ecotoxicology} | R Documentation |
Returns TRUE if all proportions are in a monotonically increasing sequence
IsMonotonicallyIncreasing(p)
p |
numeric vector |
True is the series is monotonically increasing
Jose Gama
Hamilton, m.a., R.c. Russo, and r.v. Thurston, 1977. Trimmed spearman-karber method for estimating median Lethal concentrations in toxicity bioassays. Environ. Sci. Technol. 11(7): 714-719; Correction 12(4):417 (1978).
#Data from the example on page 8: #Hamilton, m.a., R.c. Russo, and r.v. Thurston, 1977. #Trimmed spearman-karber method for estimating median #Lethal concentrations in toxicity bioassays. #Environ. Sci. Technol. 11(7): 714-719; #Correction 12(4):417 (1978). concentration<-c(1.1,2.3,4.5,8.8,17.1) exposed<-c(10,10,9,10,10) mortality<-c(1,5,4,2,7) p<-mortality/exposed x<-log(concentration) IsMonotonicallyIncreasing(p)