Hi all, I need someone to confirm the following about reference system...
Context: Paul and I are uploading US-Canada boundary monuments/turning points to get a stable and verifiable information. The data is available from their web site and I got the confirmation that the data can be used without any restriction. The data can be found here... http://www.internationalboundarycommission.org/products.html and it is available for NAD27 and NAD83-SCRS reference system. Context: For what I understand, The difference between NAD83-SCRS and WGS84 is 0-2 meters. To get a rigorous transformation from NAD83-SCRS to WGS84 we need to use shift grids describing the shift between NAD83 and NAD83-SCRS. These grids should be available through provincial agencies but I have been told that not all provinces have them available. Question1: Do I understand it properly? Question2: Considering that provided coordinates value/reference numbers can be read directly from their web site, it make sense for me to use NAD83-SCRS directly even if there is a 0-2 meter offset. Does it make sense for everyone? Cheers, Daniel _______________________________________________ Talk-ca mailing list Talk-ca@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ca