Apologies if this had been asked already (maybe even by me - I'm getting old and forgetful!)
How much of Peter's Computer/GPS data was used on the ground? Were the Dozer blades GPS-controlled?
I'm sure there was waaaay much more artistry involved than that, but just curious how the computer model manifested itself in the dirt.
F.
Marty:
We used the data to get something on the ground, and then refined where we felt was necessary. In a couple of instances, we refined the computer model and did the GPS thing again; in others, we re-shaped something and then surveyed it so that the GPS could put it back if the sand blew around before irrigation [which happened a LOT and is one of the best uses of the technology IMO].
I do not believe that the dozer blade was CONTROLLED by the GPS, rather, the GPS showed the operator what to do. But I might be wrong about that. The two GPS operators were not my own crew, but Craig Haltom's crew.
We also had an aerial photo reconciled with the GPS and found in some cases that the computer model didn't match up exactly; in those cases we adjusted the bunker edges to the aerial.
When the first couple of greens came out kind of flat-looking by the standards of other Macdonald/Raynor courses I've seen, I asked Peter how he did his green contours in the model, and he said his data was not good enough to interpret to the inch, so we started making more adjustments as we went. [The aerial photo, the plasticine model and the computer model were all good for showing us where the contours were, but not necessarily how big they were. And depending on the lighting of the aerial photo, some contours did not show up as well as others: if there's a shadow from the south, greens that are sloping down from north to south don't show up as well as greens sloping south to north.]
The two weaknesses of the computer model were two things that video games do not have to worry about:
1. Green to tee walks. Peter had missed the walk path from the 12th green to the 13th, because when you putt out on a computer game, you just pop up on the next tee!
2. Drainage! This was a more significant problem as the green contours often poured the drainage down the faces of the surrounding bunkers, and even as sandy as our site was, that's a problem when it rains really heavily. So we had to decide whether to adjust contours to alleviate the problem, secure in the knowledge that the original course probably drained better than the computer model.