## Not run:
# # load datasets carscomplete and carsmissing
# data(carscomplete) # complete data
# data(carsmissing) # missing values
#
# # apply nipals
# my_nipals1 = nipals(carscomplete)
# my_nipals2 = nipals(carsmissing)
#
# # plot variables (circle of correlations)
# plot(my_nipals1, what="variables", main="Complete data")
# plot(my_nipals2, what="variables", main="Missing data")
#
# # plot observations with labels
# plot(my_nipals1, what="observations", show.names=TRUE, main="Complete data")
# plot(my_nipals2, what="observations", show.names=TRUE, main="Missing data")
#
# # compare results between my_nipals1 and my_nipals2
# plot(my_nipals1$scores[,1], my_nipals2$scores[,1], type="n")
# title("Scores comparison: my_nipals1 -vs- my_nipals2", cex.main=0.9)
# abline(a=0, b=1, col="gray85", lwd=2)
# points(my_nipals1$scores[,1], my_nipals2$scores[,1], pch=21,
# col="#5592e3", bg = "#5b9cf277", lwd=1.5)
# ## End(Not run)
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