DDStoDDM ( LATorLNG )

Converts DMS geocodes to DDM geocodes

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Peter Sijmons - Show more from this author
Szienz
http://www.szienz.com

Sample input:

N 24° 31' 37.6854"
S 24° 12' 24.8026"
24° 12' 24.8026" S

Sample output:

24.5271334833333
-24.206889611111
-24.206889611111

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Let ( [

Geo = Substitute ( LATorLNG ; "\"" ; "" )   ;

Lettr = 
Case (
PatternCount ( Geo ; "S" )  ; "-" ;  
PatternCount ( Geo; "W" )  ; "-" ; 
"" ) ;

Stripped = Substitute ( Geo ; ["N" ; ""] ;  ["S" ; ""] ;  ["E" ; ""] ;  ["W" ; ""] ) ;
Degr = LeftWords ( Stripped ; 1 ) ;
Mn = MiddleWords ( Stripped ; 2; 1 ) ;
Sec = MiddleWords ( Stripped ; 3; 1 ) ;

Mnn = Mn + ( Sec / 60  ) ;
DecDegr = ( Mnn / 60 ) 

] ; 

Substitute ( Lettr & Degr & DecDegr  ; "," ; "." ) 
)


//20160708 Sijmons, Szienz, v1 DMS to DDM geocode conversion,

This converts the latitude and longitude in degrees, minutes, seconds decimal DMS, to degrees decimal minutes DDM which is easier to use in FileMaker Webviewers that display Google map locations.

The comma substitution is needed when running on systems that have a decimal comma

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Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

DDStoDDM ( LATorLNG )

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