Candegrl, The X/Y coordinates you are dealing with are "State Plane Coordinates." According to the information you have provided, you're in the Florida East Zone, NAD83. The coordinates in your file appear to be written, Easting, Northing (X,Y) which is unusual (typically northing comes first). There are a couple of things you can do to convert state plane to lat/long.
1) Use the NGS geodetic toolkit, http://www.ngs.noaa.gov/cgi-bin/spc_getgp.prl but that only does one point at a time. They have a link to a download for SPCS 83, which may do batch, but I've never used this tool. Note, your zone number is 901. 2) Use CorpsCon http://crunch.tec.army.mil/software/corpscon/corpscon.html It may be a little difficult to install and use, but it can process batch files, and it gets the job done. 3) See if any of the ESRI products (i.e. ARCGIS) in your office can do it. Dealing with state plane coordinates is VERY tricky. Even experienced land surveyors make major mistakes. Here are a couple of things to watch out for: 1) The coordinates for your current project are apparently in U.S. Survey Feet (1ft = 0.304800609601), NOT International feet (1 ft = 0.3048m). It may not seem like much of a difference, but it can lead to 15 ft errors. 2) *ALWAYS* stick a couple of converted points into google maps or google earth and make sure they fall where they're supposed to on the aerial photos. You'd be surprised how often your field person has blown a measurement, or you have made a careless mistake. I've converted your point number 7354 (from your file) into lat/long, and get: 29.7577585,-81.2490777 Here is a link to it in google maps Street View. You can even see the hydrant!: http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=29.7577585,-81.2490777&sll=29.750071,-81.199951&sspn=1.87899,3.353577&ie=UTF8&ll=29.757727,-81.249197&spn=0.001835,0.003275&z=19&layer=c&cbll=29.757685,-81.249216&panoid=nJrN7-yrvEe0las-UgJ2nQ&cbp=12,54.9,,0,9.05 Good Luck! Jeff -- You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-api?hl=en.
