PRIVATE function: merges the elements of two objects of class aquaenv: element names are taken from the first argument, the elements of which are also first in the merged object
Usage
"merge"(x, y, ...)
Arguments
x
object of class aquaenv: this is where the element names are taken from
y
object of class aquaenv: must contain at leas all the element (names) as aquaenv1, extra elements are ignored