I'm trying to create a mosaic dataset of MrSID files. When I go to the directory to select the files, there are lots of .jpg files that register as raster datasets as well. Each one corresponds directly to a MrSID file. If I add both a MrSID file and its corresponding jpg, the tiles will not mosaic properly. I thought the jpg was somehow a pyramid file or something so I added it. Should I just leave it out?
MrSID files store pyramids internally, so there won't be an associated pyramid file (.ovr). I would recommend not including the JPGs. Also, I would recommend creating a Mosaic Dataset of the MrSIDs if you're not already. A mosaic dataset will save you storage space, creation time, and perform much faster.