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What if the data collected is loaded with no projection information to begin with? Jennifer M. Kalasardo GIS/CAD Operator Iroquois Pipeline Operating Company One Corporate Drive, Suite 600 Shelton, CT 06484-6211 203-925-7224 (W) 203-925-7213 (F) 860-967-9795 (C) [log in to unmask]<mailto:[log in to unmask]> From: David (Dave) Tewksbury [mailto:[log in to unmask]] Sent: Monday, December 07, 2015 3:22 PM To: Jennifer Kalasardo <[log in to unmask]> Cc: [log in to unmask] Subject: Re: Projection questions Jennifer, If the data was collected with a certain projection datum, say NAD 27 for example, and you define the data with NAD83 datum the data will be offset from the correct position by x meters in X direction and x meters in Y direction. The amount of offset will vary depending on where the data was originally collected. Dave On Mon, Dec 7, 2015 at 3:17 PM, Jennifer Kalasardo <[log in to unmask]<mailto:[log in to unmask]>> wrote: Please explain not the correct projection for the data? Jennifer M. Kalasardo GIS/CAD Operator Iroquois Pipeline Operating Company One Corporate Drive, Suite 600 Shelton, CT 06484-6211 203-925-7224<tel:203-925-7224> (W) 203-925-7213<tel:203-925-7213> (F) 860-967-9795<tel:860-967-9795> (C) [log in to unmask]<mailto:[log in to unmask]> From: David (Dave) Tewksbury [mailto:[log in to unmask]<mailto:[log in to unmask]>] Sent: Monday, December 07, 2015 3:01 PM To: Jennifer Kalasardo <[log in to unmask]<mailto:[log in to unmask]>> Cc: [log in to unmask]<mailto:[log in to unmask]> Subject: Re: Projection questions I'm with Jarlath, either a data layer is defined incorrectly, or when you defined a projection it was not the correct projection for the data. Dave On Mon, Dec 7, 2015 at 2:55 PM, Jennifer Kalasardo <[log in to unmask]<mailto:[log in to unmask]>> wrote: [cid:[log in to unmask]] Apologies for the cross-posting… I'm trying to help out a colleague. He has a map that has data coming in at three different areas even when I've done define projection, reproject, open a clean mxd and define the map projection before loading data, but I am out of ideas. We've gone through a few transformations as well, but y'all know how many of those there are. Can I provide any more information or data (limited) to get some more help? Thanks, Jennifer M. Kalasardo GIS/CAD Operator Iroquois Pipeline Operating Company One Corporate Drive, Suite 600 Shelton, CT 06484-6211 203-925-7224<tel:203-925-7224> (W) 203-925-7213<tel:203-925-7213> (F) 860-967-9795<tel:860-967-9795> (C) [log in to unmask]<mailto:[log in to unmask]> ------------------------------------------------------------------------- This list (NEARC-L) is an unmoderated discussion list for all NEARC Users. If you no longer wish to receive e-mail from this list, you can remove yourself by going to http://s.uconn.edu/nearcsubscribe. -- Dave Tewksbury GIS & Tech support Dept of Geosciences Hamilton College Clinton, NY 13323 USA -- Dave Tewksbury GIS & Tech support Dept of Geosciences Hamilton College Clinton, NY 13323 USA ------------------------------------------------------------------------- This list (NEARC-L) is an unmoderated discussion list for all NEARC Users. If you no longer wish to receive e-mail from this list, you can remove yourself by going to http://s.uconn.edu/nearcsubscribe.