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Coordinate Reference Systems

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Hi, A Norwegian client is asking "interesting" questions related to time-dependent transformations, reference systems and implementation in ArcGIS. All I have found is a good read from Kevin Kelly (FIG 2012) at: Esri   Now, any information or… (Show more)
Hi, i am working with various layers that have the following coordinate system and projection:   Coordinate system: GCS_CAPE Projection: Transverse_Mercator   How can I add a base map that is aligned with them? The base maps have the following features :   Coordinate system: WGS 84 Projection: WGS 1984 Web Mercator (auxiliary sphere)   Base… (Show more)
in Coordinate Reference Systems
I recently came across a problem where I had created a number of polygons from existing lines using the "Construct Polygons" editing tool (default tolerance 0.0108 ft), which used a different tolerance than the feature classes that I was working with (default tolerance 0.00328 ft). After I validated the topology (no gaps, no overlaps, default… (Show more)
in Coordinate Reference Systems
Hi Everyone,    I have some shapefiles that were exported from a Trimble GPS unit that I am having trouble projecting correctly once I pull them into ArcMap. I have shapefiles that were exported from the device, but only .dbf, .shp, and .shx extensions, a .prj file was not created. I know the coordinate system of the device, but I can't find a… (Show more)
Are there any tools out there that can read a *.gtf file and convert it into a shareable format for non-ArcGIS users like WKT2?
in Coordinate Reference Systems
Apologies in advance if this is a dumb question or I'm missing something obvious... It's rare I have to leave the confines of the Ordnance Survey National Grid and think about reference systems.    I saw this image on social media and thought it would be fun to experiment with. I obtained shapefiles for Australia and the Mediterranean sea, they… (Show more)
in Coordinate Reference Systems
I was here in this group and browsing around and download this file (see attachment).  I think it was organized by ESRI and probably done by Melita Kennedy (?). I am not sure .....   My question here is if there is a similar to the one but for the vertical coordinate system ?   It would be a nice to have one and organize by ESRI to put up one… (Show more)
in Coordinate Reference Systems
Hello all,   In my organisation we have historically created custom transformations (.gtf) that carry 7 parameter shift values between GDA94 (EPSG:4283) and WGS84 (EPSG:4326). We constructed these in ArcMap 10.3 and have recently upgraded to 10.7.   We have noticed a few differences between 10.3 and 10.7, such that: Copying the .gtf files… (Show more)
in Coordinate Reference Systems
Click to view contentI discovered this amazing, well I think it is amazing, find recently and though to share how you can create a beautiful star chat using ArcGIS Pro. This StoryMap is made by Heather Smith you can find more information on the map at the bottom of the page.   I will let Heather introduce the map herself (extracted from the StoryMap): Haven't you… (Show more)
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