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You may also find this useful:
Identifying an unknown coordinate system
http://resources.arcgis.com/en/help/main/10.2/index.html#//003r00000004000000
Andy
From: Northeast Arc Users Group [mailto:[log in to unmask]]
On Behalf Of Andy Anderson
Sent: Monday, December 07, 2015 3:31 PM
To: [log in to unmask]
Subject: Re: Projection questions
Hi, Jennifer,
Every file of GIS coordinates is written with respect to some projection. That should be determined and set before the data is brought into ArcMap. If a shapefile has no .prj file, then one should be created for it by editing it with ArcCatalog.
Here are some instructions:
Once the shapefile has a projection defined, ArcMap can reproject as necessary to the current map view, as defined by the data frame (“Layers”).
— Andy
On Dec 7, 2015, at 3:17 PM, Jennifer Kalasardo <[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 (W)
203-925-7213 (F)
860-967-9795 (C)
From: David (Dave) Tewksbury [mailto:[log in to unmask]]
Sent: Monday, December 07, 2015 3:01 PM
To: Jennifer Kalasardo <[log in to unmask]>
Cc: [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]> wrote:
<image001.gif>
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 (W)
203-925-7213 (F)
860-967-9795 (C)
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--
Dave Tewksbury
GIS & Tech support
Dept of Geosciences
Hamilton College
Clinton, NY 13323
USA
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