Two raster layers, one Landsat image and a NDVI image derived from the Landsat image, have the same datum and coordinate system (WGS 84, UTM Zone 46 N) but they are not overlapping in ArcGIS. I actually exported the image from ArcGIS file geodatabase to ENVI to calculate NDVI image. When I try to add the NDVI image back to ArcGIS, it shows the error message 'the following data source you are adding are missing spatial reference.......'. I defined the projection in both 'Define projection' and 'Project raster' tools but with no result. They don't overlap!
Kindly have a look at the picture.
I would highly appreciate your kind urgent response please as I am stuck at this point and cannot move an inch ahead really!