PlotProductratio | R Documentation |
The product-ratio plot as defined in [Tukey, 1977, p. 594].
PlotProductratio(X, Y, na.rm = FALSE,
main='Product Ratio Analysis',xlab = "Log of Ratio",ylab = "Root of Product", ...)
X |
[1:n] positive numerical vector, negativ values are removed automatically |
Y |
[1:n] positive numerical vector, negativ values are removed automatically |
na.rm |
Function may not work with non finite values. If these cases should be automatically removed, set parameter TRUE |
main |
see |
ylab |
see |
xlab |
see |
... |
further arguments passed on to |
In the case where there are many instances of very small values, but a small number of very large ones, this plot is usefull [Tukey, 1977, p. 615].
matrix[1:n,2] with sqrt(x*y) and log(x/y) as the two columns
Michael Thrun
[Tukey, 1977] Tukey, J. W.: Exploratory data analysis, United States Addison-Wesley Publishing Company, ISBN: 0-201-07616-0, 1977.
#Beware: The data does no fit ne requirements for this approach
data('ITS')
data(MTY)
PlotProductratio(ITS,MTY)
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