#31  
Old 07-13-2013, 05:25 PM
c_a_miller c_a_miller is offline
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Quote:
Originally Posted by Steve West View Post
Simply computed all 22,302,006 distances from each course to every other course (using the haversine formula a = sin²(Δφ/2) + cos(φ1).cos(φ2).sin²(Δλ/2): c = 2.atan2(√a, √(1−a)): d = R.c: where φ is latitude, λ is longitude, R is earth’s radius) choosing the minimum distance to any other course for each course then sorting by country/state and distance.

Why? Isn't that how you would do it?
I guess a better question would be how did you get all the latitudes and longitudes into a data base? Because you obviously did not manually click on each page to pull them out.
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  #32  
Old 07-13-2013, 05:53 PM
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Craig639 Craig639 is offline
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Quote:
Originally Posted by Steve West View Post
Simply computed all 22,302,006 distances from each course to every other course (using the haversine formula a = sin²(Δφ/2) + cos(φ1).cos(φ2).sin²(Δλ/2): c = 2.atan2(√a, √(1−a)): d = R.c: where φ is latitude,
λ is longitude, R is earth’s radius) choosing the minimum distance to any other course for each course then sorting by country/state and distance.

Why? Isn't that how you would do it?
Highfive!!
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  #33  
Old 07-13-2013, 06:11 PM
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BogeyNoMore BogeyNoMore is offline
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Quote:
Originally Posted by Steve West View Post
Simply computed all 22,302,006 distances from each course to every other course (using the haversine formula a = sin²(Δφ/2) + cos(φ1).cos(φ2).sin²(Δλ/2): c = 2.atan2(√a, √(1−a)): d = R.c: where φ is latitude, λ is longitude, R is earth’s radius) choosing the minimum distance to any other course for each course then sorting by country/state and distance.

Why? Isn't that how you would do it?
superlulz!

FYI :
University of MT - Northern (48.542175,-109.685130) and Warden Park (47.491935,-111.302720) are 113 miles apart (driving distance) according to Google maps. Looks like a fairly straight shot down US 87, probably not much closer "as a bird flies."

Has anyone actually verified a more remote course than UM Northern?


That one on the Tex-Mex border looks pretty lonely...
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  #34  
Old 07-13-2013, 06:26 PM
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lion lion is offline
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I don't agree with the one in Arizona because there is a listed practice course a few mikes away. The one in California is also not the furthest. I have a course I need to listed near that one. Also have another in mind for Cali. I have played all the courses in Nevada and Arizona. Nevada was pretty tough to play, also Arizona's most northern course is really tough to get to.
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  #35  
Old 07-13-2013, 06:27 PM
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BogeyNoMore BogeyNoMore is offline
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Steve's data says Buena Vista Park in Del Rio, TX (29.398459,-100.920450) is 102 miles removed, but I don't know from what.

Closest course I found to Buena Vista was Bandera DGC in Bandera TX (29.714900,-99.080100)... a 145 mile drive per Google maps. That's got MT beat.
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  #36  
Old 07-13-2013, 06:52 PM
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BogeyNoMore BogeyNoMore is offline
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Steve, are the distances you posted (i.e. 102 miles for Buena Vista in TX) straight line distances? That could definitely explain the difference. And what is it 102 miles from?

I plugged the two sets of coordinates into this GPS Latitude and Longitude Distance Calculator, and it spit out ≃113 miles
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  #37  
Old 07-13-2013, 07:19 PM
Steve West Steve West is offline
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Quote:
Originally Posted by lion View Post
I don't agree with the one in Arizona because there is a listed practice course a few mikes away....
It's not surprising that a new course was built (or listed) somewhere in the previously-empty 33,979 square miles around that course in the last year and a half.

I'd bet a lot of these courses have a new nearest neighbor. So, there's still fun to be had by all.

[QUOTE=BogeyNoMore;2080736]Steve, are the distances you posted (i.e. 102 miles for Buena Vista in TX) straight line distances? That could definitely explain the difference.

Great circle route, or shortest possible distance. There are no straight lines on the Earth's surface.

Quote:
Originally Posted by BogeyNoMore View Post
And what is it 102 miles from?
Don't know. Didn't save that. Your guess is as good as mine.

Quote:
Originally Posted by BogeyNoMore View Post
I plugged the two sets of coordinates into this GPS Latitude and Longitude Distance Calculator, and it spit out ≃113 miles
I don't know what's going on with that calculator.
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  #38  
Old 07-13-2013, 07:39 PM
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BogeyNoMore BogeyNoMore is offline
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Touché sir. While I do realize there are no straight lines on the surface of "not quite a sphere because it's flatter at the poles, but probably close enough to approximate one for our purposes," I was just trying to determine how much difference there was between the shortest distance and driving distance (which for all intents and purposes is more practical since most of us can't take a helicopter from course to course). So if you wanted to bag Buena Vista and another course, you have to drive at least 145 miles, because 102 wouldn't get you to another course. IMO, Buena Vista's more remote than UM Northern, because you have to drive 32 miles farther to get to the closest course. I'm just looking at the question from a practical standpoint.

As for the 113 miles I just googled "calculate distance between coordinates" or something to that effect, and it was one of several links provided. Plugged in the coords and it came back with 112.67xxxxx. I make no claim as to it's accuracy or lack thereof.

Last edited by BogeyNoMore; 07-13-2013 at 07:42 PM.
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  #39  
Old 07-13-2013, 09:38 PM
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DavidSauls DavidSauls is online now
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Funny, it always seemed to me that the most isolated course was any course for which a general workday has been announced. Suddenly, no one can get to it.
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  #40  
Old 07-13-2013, 10:44 PM
tomdizzlefizzle tomdizzlefizzle is offline
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The course in Antarctica is pretty isolated
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