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Gourav1
I have delineated the watershed using different type of DEM(SRTM 30m, ASTER 30m, CARTOSAT 10m and Hybrid DEM 10m ). I have to validate Which one derived Watershed are accurate? How can i check the accuracy of watershed is good from the another three DEM data.
in Coordinate Reference Systems
CADEngr2014
Hello,   I am using ArcMap 10.4.1. I have a need to know the likely vertical datum used with the UTM83, zone 16, projected horizontal datum, and have to ask if there is a table of horizontal datums matched to their corresponding vertical datum for a particular date?  I know NGS has many sites dedicated to just a particular geoid or ellipsoid but… (Show more)
in Coordinate Reference Systems
gis10enj
I have a data with this coordinate reference system (wgs84 30N CM 3W). and I need to load the data in ArcGIS but I can't seem to find it exactly in ArcGIS. First, I will like to know if it's same thing as the usual wgs84 UTM 30N or what is it? Please, how can I deal with this?  Thanks in advance.
in Coordinate Reference Systems
CADEngr2014
Hello, I am using Arc Map 10.4.1. I have the impression that my version of ArcMap will not perform vertical transformations/projections on datums but only the Pro version is capable of this.  However, I also see that inside ArcMap a reference is given to "ArcGIS Coordinate Systems Data installation package" as a required data set needed to… (Show more)
in Coordinate Reference Systems
curtvprice
Looking for more information about the optional install of coordinate systems. The What's new document for Desktop 10.5 document says this: ArcGIS Coordinate Systems Data—Contains the data files required for the GEOCON transformation method and vertical transformation files for the United States (VERTCON and GEOID12B) and the world (EGM2008).… (Show more)
in Coordinate Reference Systems
curtvprice
Hello! I am trying to import a CAD file which is in OS (OSGB36 coordinate system) into ArcGIS Pro. I could set the OSGB36 coordinate system (UK) for the database and for the base map(in the map properties) as well, but I cannot see my CAD objects when I import them into ArcGIS Pro. Also I cannot set the OSGB36 coordinates on the main map layout… (Show more)
Hegazy.MH@nahdi.sa
I have went through the below steps:   1 - Exporting KML file from Google earth with some points. 2 - applying Excel to table & the resulted table was appeared in a data frame where a base map is available. 3 - Displaying X,Y Coordinates (taking into consideration that the appeared coordinated system in - display X&Y coordinates window - is the… (Show more)
in Coordinate Reference Systems
MKennedy-esristaff
The US National Geodetic Survey (NGS) is implimenting a plan to replace NAD 83 and NAVD 88 through a modernization effort.   NGS’s main page on the subject: https://www.ngs.noaa.gov/datums/newdatums/index.shtml   NGS has been very proactive in publishing information on the planned changes, and has had several summits to directly communicate… (Show more)
in Coordinate Reference Systems
CADEngr2014
Hello,   I am using ArcMap 10.4.1.   After watching the ESRI video presentation titled "Introducing Coordinate Systems and Transformations", under the subtitle "What is Happening When We Project Data?", under Case 2: Each PCS contains a different GCS; describes the projection as Un-projecting PCS A1 to GCS A->Transforming Geographic Datum to GCS… (Show more)
in Coordinate Reference Systems
j.y.mutua
Melita Kennedy have a polygon which is in GCS_Arc_1960/Arc_1960_UTM_Zone_37S coordinate system and I need to transform it to to GCS_WGS_1984/WGS_1984_UTM_Zone_37S. I have not been successful in doing this using ArcMap. Is there a solution for this? if possible provide a complete workflow.
in Coordinate Reference Systems
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