test {geostats}

composition of a further 147 oceanic basalts

Description

Major element compositions of 64 island arc basalts (IAB), 23 mid oceanic ridge basalts (MORB) and 60 ocean island basalts (OIB). This dataset can be used to test supervised learning algorithms.

References

Vermeesch, P. “Tectonic discrimination diagrams revisited.” Geochemistry, Geophysics, Geosystems 7.6 (2006).

Examples

library(MASS)
data(training,package='geostats')
ld <- lda(x=alr(training[,-1]),grouping=training[,1])
data(test,package='geostats')
pr <- predict(ld,newdata=alr(test[,-1]))
table(test$affinity,pr$class)