You may never get there...

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Subject: You may never get there...
Posted by JT from MD on January 30, 2002 at 5:22 PM:

In Reply to: Zip Code AND Lat/Lon on bill reports! posted by SilkyTears on January 30, 2002 at 12:49 AM:

: I always like to know how far a bill is from my home town. If it is a Multiple Hit Bill, I have to calculate the Distance myself.

: I use the Great Circle Distance calculator on-Line, which takes Lat/Lon in Degrees and minutes.
: It never calculates exactly what Where's George calculates and sometimes I am one or two miles off.

: DOES ANYONE KNOW OF A GOOD ONLINE DISTANCE CALCULATOR that calculates in decimal degress and fractions of degrees. I feel this would be more accurate.

: I have noticed that since HANK has upgraded the ZIPCODE database, that some distances from my home town have changed.

I think that one of the problems is that there are several formulas for calculating the great circle distance. Most, but maybe not all?, assume that the earth is a sphere of some radius and there are several numbers for that: mean, polar, equitorial, etc. If you ever find one that claims to include the "actual" shape of the earth I would be interested in it.

I don't know about decimals, but this one allows Seconds. You can try it.

Bali & Indonesia

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Comments:
: : I always like to know how far a bill is from my home town. If it is a Multiple Hit Bill, I have to calculate the Distance myself. : : I use the Great Circle Distance calculator on-Line, which takes Lat/Lon in Degrees and minutes. : : It never calculates exactly what Where's George calculates and sometimes I am one or two miles off. : : DOES ANYONE KNOW OF A GOOD ONLINE DISTANCE CALCULATOR that calculates in decimal degress and fractions of degrees. I feel this would be more accurate. : : I have noticed that since HANK has upgraded the ZIPCODE database, that some distances from my home town have changed. : I think that one of the problems is that there are several formulas for calculating the great circle distance. Most, but maybe not all?, assume that the earth is a sphere of some radius and there are several numbers for that: mean, polar, equitorial, etc. If you ever find one that claims to include the "actual" shape of the earth I would be interested in it. : I don't know about decimals, but this one allows Seconds. You can try it.

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