Calculates the weights from two vectors of minimum and maximum dating for each object. Returns a dataframe with the weight in the first column and FALSE in the second if two rows have the same value in both min and max dating.
get.weights(DAT_min, DAT_max)a vector containing the minimum date (a number) of each object
a vector containing the maximum date (a number) of each object
the 'weight' value for the datsteps-dataframe, that is a quantification of how well the object is dated (lesser value means object is dated to larger timespans, i.e. with less confidence)