FDM in 5 minutes
Once i understood the method it was clear I could do the deal in about 5 minutes:
That’s it. Now of course I will want to area weight it, But thats a builtin in function. So, we will have to do a bit more work.
It will look like this:
Create the First differences: take the mean of series PER cell ( as.gridCell) then, multiply by the gridweight and we are done. A couple things here and their on the order of operations, But its not A problem
I Love R
AND YES, the units are 1/10s of C.