AnsweredAssumed Answered

custom transformation not functional mosaic dataset

Question asked by hlzhang525 on Mar 25, 2018
Latest reply on Mar 26, 2018 by hlzhang525



Recently practice and witness the following, which is reproducible in ArcGIS 10.4.1 and 10.5.1:



  • ArcGIS built-in (3 to 5-parameter) transformation between WGS84 and local datum, called 'Option 1' used by default in Mosaic Dataset;
  • A more accurate (7-parameter) custom transform between WGS84 and local datum, called 'Option 2', which is used to take over Option 1 in Mosaic Dataset



  • Option 2 is customized, which is also configured via Environment Settings (for takeover of Option 1), where NADCON file is managed under C or D:\Program Files (x86)\ArcGIS\Desktop10.5\pedata\nadcon folder



  • When images with WGS84 (UTM) are loaded into a Mosaic Dataset (with local datum), the Option 2 is not functional, which still uses Option 1 for the transformation. It looks no takeover at all.
  • However, if those images are directly loaded into ArcMap, it demonstrates two options: Option 1 and Option 2. When the Option 2 is selected, the transformation works fine. 


Any advice?