hiya, this has been a slight concern for a little while, and just sparked up again because of a recent post re: cosmetic layer precision. i personally haven't gone into great depths of knowledge regarding all the datums and stuff like that, i just make sure that everything i play with has WGS84 as it's coordsys. as it is i don't require extreme precision with anything, normally within 10 metres or so is good enough for now, but with all of these X/Y coordinates that i'm saving with a number of records, is there any further data that i should be embedding rather than just float numbers such as 138.61325 etc.? or is it good enough to just make sure that all uses of these objects is done in WGS84? i'm sorry for my ignorance, but i'm really not interested in learning everything about datums and coordinate systems, i just want to werk with the data with minimum fuss. here's an example of how my data may be updated: i have a point in a table someone has a look at where it is in mapinfo and decides it not quite in the right spot rather than move the point (because i don't like having my tables shared across apps) they create a new point on the cosmetic layer where it SHOULD be, select it, then in Access click a button and the currently selected record's X Y is updated to whatever object is currently selected within mapinfo. is this possibly problematic? ash
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