ESRI Question
Okay, so maybe this is a dumb (ignorant) question, but I don’t mind admitting my ignorance concerning ESRI Products (I’m just a dumb surveyor, not a GIS Expert).
I have a client that needs a .prj file in order to get a recent Project (NAD83(2011) Epoch 2010.0000) into their database. They sent me a .prj file relating to the Coordinate System, Datum, Projection, that they are using (NAD83 UTM Zone 12);
Here’s the “header” data from their .prj file (reformatted for clarity);
PROJCS[“NAD_1983_UTM_Zone_12N”,
GEOGCS[“GCS_North_American_1983”,
DATUM[“D_North_American_1983”,
SPHEROID[“GRS_1980”,
6378137.0,298.257222101]],
PRIMEM[“Greenwich”,0.0],
UNIT[“Degree”,0.0174532925199433]],Okay, this appears to be a somewhat generic “definition” that leaves the question of NAD83 Realization (1986, HARN, 2007, 2011 etc.) open to interpretation. The variance between NAD83(1986) and NAD83(2011) is a non-trivial consideration IMO, but maybe I’m just splitting hairs.
I guess that my real QUESTION is…DOES ESRI have options embedded in the Software, that “handles” the DIFFERENT realizations of NAD83?
If so, what is EXACT text I need to replace;
GEOGCS[“GCS_North_American_1983”,
DATUM[“D_North_American_1983”,with?
Thanks in advance,
Loyal
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