if you have a 3d graph though, isn't is useful to show you some errors in the mapping?

if you look at the fuel map that stu posted earlier of a std P8, it looks like this



you can see that there seems to be 2 points where something is wrong. that is because i deliberately made a typing error, but it just go to show you how a 3d chart is instantly useful. the real map should of course look like this:



so, i think that the 3d charts can be useful, both to check your input, and their main use is to see that the surfaces are more or less smooth as otherwise may indicate a bad site (unless it's where you've had to take a pulse wave into account or something).