midge {Flury} | R Documentation |
Data on the Antenna length and Wing length of two species of Midge
data(midge)
A data frame with 15 observations on the following 3 variables.
Species
Af
(Amerohelea
fasciata) Apf
(A. pseudofasciata)Ant.Length
Wing.Length
These data concern two newly discovered species of American predaceous midges. Interest surrounds the possibility of classifying these two species based on external measurements alone. Two possible measures are recorded here.
Grogan, W.L, and W.W. Wirth (1981) “A new American genus of predaceous midges related to Palpomyia and Bezzia (Diptera: Ceratopogonidae)” Proceedings of the Biological Society of Washington 94:1279-1305
Flury, B.D. (1997) A First Course in Multivariate Statistics, Springer NY
data(midge) ## Not run: with(midge, plot(Ant.Length, Wing.Length, col = as.numeric(Species), pch = 16, main = "Scatterplot of midge data")) legend("bottomright", pch = 16, col = c(1,2), legend = c("Af", "Apf")) ## End(Not run)