Steven Callaghan

Texas has five state plane zones…with sp 1 the most northerly zone, sp 5 is the most southerly…knowing the location of the project, which county/city it is in, will help to locate it in the appropriate State Plane zone…there are ways to match up unknown projections to lat-long, but that discussion is way beyond the scope of this discussion t…[Read more]

How many points are you converting?  100, 200, 5000????  The etrex collects data in Latitude-Longitude, WGS84 only…the data can then be converted from the coordinate system to any other coordinate system on the fly in the etrex…btw this is the abbreviated explanation.   However, the etrex is not very robust when converting coordinates… NAD…[Read more]