External overviews gets outdated
Mantis Issue 1295, reported by jmichel, assigned to mgrizonnet, created: 2016-10-07
External overviews get outdata if the image is reprocessed. Monteverdi does not detect it, and loads an outdated ovr files resulting in upredicted behaviour.
This is especially annoying when calling the same application twice within monteverdi with the same output filename and different parameters. If the user generated overviews the first time, then they will be used when reloading the image, and gives false display (if not crash).
This could maybe be fixed at the gdal level.
2016-10-18 11:22 - grizonnetm: See discussion on gal-dev:
Best option in Monteverdi is what Even suggested:
"The client code (AKA Monteverdi) can also use the GDALDataset::GetFileList() API and see if there's a .ovr file listed in there. And thus decide to apply a timestamp based logic if it whishes."