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Degrees to Decimal

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Im workintg on airport W92 I entered the lat/lon in a decimal conversion program I found on the web. It says however that it will not display a negative value. So for the following lat/lon wich if any of the decimal equivalant would have a minus signs. ANd when does one know when to include a minus sign?PeteW92(USA)LAT/LON:N38* 48.95W078* 46.23Decimal:38.8266666666666778.77305555555556KGAI(USA)LAT/LON:N39* 10.10W077* 09.96Decimal:39.16944444444444463.17666666666667

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You can easily get the decimal degrees by dividing the minutes by 60, eg 48.95/60 = 0.815833333. Then just add your degrees.In most programs South and West will be minus and North and East will then be plus.

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The negative sign is a common convention for South and West. So you can omit the negative sign and just know it's west for purposes of conversion.Seems to me that your values are already in decimal.>W92(USA)>LAT/LON:>N38* 48.95>W078* 46.23>Decimal:>38.82666666666667>78.77305555555556If you're trying to convert that to seconds, then you have N38* 48' (.95 * 60)" (whatever that comes out to).Thomas LinTaxiwaySigns.comVolunteers (testers and designers) needed, please visit the site for information

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>The negative sign is a common convention for South and West. > So you can omit the negative sign and just know it's west >for purposes of conversion. >>Seems to me that your values are already in decimal. >>>W92(USA)>>LAT/LON:>>N38* 48.95>>W078* 46.23>>>Decimal:>>38.82666666666667>>78.77305555555556>>If you're trying to convert that to seconds, then you have >N38* 48' (.95 * 60)" (whatever that comes out to). >>Thomas Lin >TaxiwaySigns.com >Volunteers (testers and designers) needed, please visit the >site for information Thanks to both of you. I asked the question because despite having the decimal coordinates, My AI traffic never appeared at the airport.I eventually realizeed that one of the numbers needs the minus sign but I did not know wich. So to solve it. I went to the terraserver home page, entered the LAT/LON and the decimal equivalant is displayed in the status bar befor the picture loads. Now, both W92 and KGAI hav AI traffic. Thanks guys

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