Hi Chris, The usual NMEA coordinate notation is DDDMM.mmm, with N/S or E/W attached to shown the appropriate Earth quadrant. But your numbers seem odd in this respect, as that would render your latitude to be 45 degrees 78.456 minutes !? And assuming it's a Canadian point, E seems kindof out of place. If you just provided a sample value, and your real coordinates do adhere to the above formula, you calculate the needed decimal degree for MapInfo (e.g. in a table/column update) using this formula (X is NMEA-value, negate expression if needed) : DecimalDeg = (X \ 100) + (X Mod 100) / 60 Best regards Lars Nielsen ********************************************************** Lars Nielsen [EMAIL PROTECTED] Senior Programmer, MapXtreme iGIS Specialist Kampsax/MapInfo, Odense http://www.mapinfo.dk Authorized MapInfo Distributor in Denmark & Norway Address: Rugaardsvej 55, DK-5000 Odense C Telephone: +45 6313-5000 Facsimile +45 6313-5090 ********************************************************** "galmala" <[EMAIL PROTECTED]> Til: "Map Info List Server" <[EMAIL PROTECTED]> Sendt af: cc: [EMAIL PROTECTED] Vedr.: MI-L NMEA 0183 V2.0 Projection onsmag.com 11-07-01 22:14 Besvar venligst til "galmala" Hey guys, I am downloading location data from a palm pilot which was collected = using the NMEA 0183 v2.0 standard. The co-ordinate information has the = following structure: Lat: 4578.456, N Long 07638.458, E This data is stored in my remote database table STN_LOC - I have = successfully linked my STN_LOC table and made it mappabe, but it is very = clear that I have used the wrong projection!! Does anyone know what format the NMEA standard spits data out in?? I am = assuming that it is just generic lat / long - which I used as my = projection in MI. This could be the problem: The hemisphere data is not stored in my co-ordinate table so I have four = columns with co-ordinate data in them GPS_LAT_COORD GPS_LAT_HEMI GPS_LONG_COORD GPS_LONG_HEMI Do I need to do a calculation with these four columns to determine the = lat and long of my point? ie/ are the N/S and E/W data important?? Thanks for your help guys and gals, Chris Chris Gallagher, M. Sc. Head Geologist / GIS Analyst Enviro-Tech Associates Inc. (Ottawa Branch) 2446 Bank St., Suite 464 Ottawa, ON K1V 1A8 (613) 282-2400 www.etassociates.com _______________________________________________________________________ List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MapInfo-L" in the message body. _______________________________________________________________________ List hosting provided by Directions Magazine | www.directionsmag.com | To unsubscribe, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MapInfo-L" in the message body.
