Latest Contributions by MelitaKennedy

We don't support 3D Cartesian in ArcGIS yet. It is in the Esri projection engine, but not exposed in the software using the library. I'm sorry! Melita ... View more

I don't think it's actually MGRS. MGRS is an alphanumeric system for locations. By default, it's only accurate to the nearest meter (+/-0.5, actually a little more) although we support MGRS strings up to mm precision. It might be UTM, which MGRS is based on. ... View more

Hi everybody,  I'm sorry that I didn't respond to this before. Both ArcMap and ArcGIS Pro support on-the-fly reprojection which often includes a geographic/datum transformation component. Both software packages use the same underlaying code, so if you have different results, it's usually because they're not using the same transformation. Open the map or data frame properties and make sure the same geographic transformation is being used.  ArcGIS Pro will often automatically select a transformation, but ArcMap doesn't do that, so it's easy to have the two giving different results. Melita ... View more

Hi Erik, I'm sorry for the delay in responding. There has been no update in the release of files/test data from NGS. However, NGS has said that they are going to delay the adoption of NSRS / 2022 for a few years. See Delayed Release of Modernized NSRS | New Datums | National Geodetic Survey  and Track Our Progress - New Datums - National Geodetic Survey . The summary is that the official adoption will likely occur in 2025, although they'll keep the 2022 name. Meanwhile, we implemented for ArcGIS 10.8.1 and ArcGIS Pro 2 a variant of Lambert conformal conic projection that will be used by NGS for the new state plane and other zones. It was already supported but awkward to use. We're still following NGS closely. Melita ... View more

Thanks, Justin. I just wanted to be sure! I have the files, but am swamped right now. I'll get to them soon. Melita ... View more

Hi Robert!  I don't see the attachment--maybe post a link? Is it the table of different map projections and their properties or the pdf file that lists projected coordinate systems, areas of use, etc? If it's the pdf file, look in the geographic coordinate systems pdf. That contains the vcs info too. Melita ... View more

Hi Justin,  Can you contact me via email so I can get some sample files, if possible. mkennedy at esri dot com The gtf file aren't supposed to be directly editable. The bit of binary at the beginning of the file contains version and string length so it's possible that it's getting messed up and we're failing to read it.  Thanks, Melita ... View more

Hello, What tectonic plate or plates is the data on? Are there other forces that would change coordinates like post-glacial rebound, seismic activity, subsidence, etc.? An area of interest in Australia versus New Mexico versus Washington would likely have different answers. Melita ... View more

I'm sorry for the delay in answering. You can copy the string to a text file (use Notepad). Make sure that it's one line. Save the file with a .prj extension. Now you can import it in ArcGIS Pro through the coordinate systems dialog/picker.  ... View more

Hi Dave,  Is there any chance I can get the DEM for testing? I haven't heard of your issue. If it's possible, and the file's not too large, you can send it to mkennedy at esri dot com. Melita ... View more

Technical Support and I have made contact and I've asked them to talk to the raster team about what's happening so I don't need your incident or customer #. Melita ... View more

I am sorry about the confusion, and the confusing answers you've received.  My name is Melita Kennedy. I'm a product engineer who works on the Esri projection engine team. We (Esri) haven't fully implemented the WKT2 standard. The "WKT1" standard didn't mandate names of objects so every company basically has their own. Esri's version, which predates the WKT1 standard, is old enough that we have a lot of Esri-specific names that don't match the EPSG dataset although we do some aliasing/synonyms to try to support alternative names.  *I* say that we follow EPSG data, not that we fully support it, because I know of all the gotchas and different names, etc. There's no way we should be interpreting something that has Mercator in the name of the map projection as a stereographic projection! Yes, the data's rotated. That's a completely wrong definition.  Raster data follows a slightly different path when handling coordinate systems than vector data does which complicates matters a bit.  I'm going to send a note to a contact in technical support because I think I know who wrote that response. She may be able to find the incident number. Irregardless, would you send your incident number, if you were given one and/or your customer number to me via email. mkennedy at esri dot com Melita ... View more

I don't know where the link would have been, but here's the contents of the file:  PROJCS["ETRS_1989_UTM_Zone_32N_8stellen",GEOGCS["GCS_ETRS_1989",DATUM["D_ETRS_1989",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",32500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",9.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["Esri",102329]] ... View more

Hi Craig,  I have bad news, I'm afraid. We don't have the Australian geoid models in the software yet including the current releases, ArcGIS Pro 2.5 and Desktop 10.8.0. I hope to get them in very soon.  I know some people have taken an ASCII version of a geoid or other vertical transformation file and converted it into a raster and then used that to calculate the offsets.  Melita ... View more