Creates objects of type "mwl" containing statistics for a meteoric water line in H and O isotope space.
Usage
mwl(HO, plot = TRUE)
Value
Returns an object of class “mwl”, a numeric vector containing meteoric water line statistics. See mwlSource.
Arguments
HO
data.frame. Hydrogen (column 1) and oxygen (column 2) isotope values for 3 or more water samples.
plot
logical. Plot the data, MWL, and standard error of prediction?
Details
mwl will return an error if fewer than 3 sample values are provided and a warning if fewer than 10 samples are provided or if the correlation coefficient between H and O values is less than 0.7. Sample values should span a broad enough range of isotope values to strongly constrain the MWL.
Model II (reduced major axis) regression is used to accommodate errors on both isotope values.