#### sunshine

##### Well-known member

relevant factors are measured and accounted for.All

Thanks. How is the impact of elevation measured?

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- Thread starter jamielaing
- Start date

relevant factors are measured and accounted for.All

Thanks. How is the impact of elevation measured?

Differences in elevation are recorded from tee to green, and from landing zone to green for approach shots; and accounted for by effective playing length corrections and topography.Thanks. How is the impact of elevation measured?

Differences in elevation are recorded from tee to green, and from landing zone to green for approach shots; and accounted for by effective playing length corrections and topography.

Thanks, I was looking for a more structured explanation, but it's ok if you don't have this

As the raters don't have a robot that hits a consistent 250 yards, I was wondering how the raters calculate the impact of factors such as elevation, wind, etc.

For the most part, recorded values translate to adjustments via lookup tables - there is no calculation of the impact by raters.Thanks, I was looking for a more structured explanation, but it's ok if you don't have this

As the raters don't have a robot that hits a consistent 250 yards, I was wondering how the raters calculate the impact of factors such as elevation, wind, etc.

The raters have to give elevation changes in certain bands 20-40 feet 40 - 50 feet etc. (I think ythe bands have changed recently but can check if you want as we are doing a couple in the next week or so).Thanks, I was looking for a more structured explanation, but it's ok if you don't have this

As the raters don't have a robot that hits a consistent 250 yards, I was wondering how the raters calculate the impact of factors such as elevation, wind, etc.

Estimations of roll are made on each fairway. The default is 20 yards from the tee on a flat hole onto a flat fairway. If the fairway is a an incline the roll is reduced and if it is downhill it is increased.

Elevation changes under 10ft are recorded as zero; anything above 10ft is rounded to the nearest 10ft; maximum ±40ft for par 3s.The raters have to give elevation changes in certain bands 20-40 feet 40 - 50 feet etc. (I think ythe bands have changed recently but can check if you want as we are doing a couple in the next week or so).

Estimations of roll are made on each fairway. The default is 20 yards from the tee on a flat hole onto a flat fairway. If the fairway is a an incline the roll is reduced and if it is downhill it is increased.

The raters have to give elevation changes in certain bands 20-40 feet 40 - 50 feet etc. (I think ythe bands have changed recently but can check if you want as we are doing a couple in the next week or so).

Estimations of roll are made on each fairway. The default is 20 yards from the tee on a flat hole onto a flat fairway. If the fairway is a an incline the roll is reduced and if it is downhill it is increased.

Thanks. This is really interesting to understand the methodology.

So what you're saying is there is a standard calculation table, e.g. the model scratch golfer hits a drive 230 yards carry plus 20 yards roll, then the carry is adjusted based on elevation and the roll is adjusted based on incline. And then I assume prevailing wind is also factored in.

And then the same process is applied for a bogey golfer who hits a drive 180 carry plus 20 yards roll?

Yup.Thanks. This is really interesting to understand the methodology.

So what you're saying is there is a standard calculation table, e.g. the model scratch golfer hits a drive 230 yards carry plus 20 yards roll, then the carry is adjusted based on elevation and the roll is adjusted based on incline. And then I assume prevailing wind is also factored in.

And then the same process is applied for a bogey golfer who hits a drive 180 carry plus 20 yards roll?

Average wind speed is also somewhere in the background calculation too.

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