NAME

       osgearth_backfill - specialty tool for post-processing TMS datasets

SYNOPSIS

       osgearth_backfill tms.xml [--bounds xmin ymin xmax ymax | --min-level level | --max-level level | --db-
                         options options]

DESCRIPTION

       osgearth_backfill  is  a  specialty tool that is used to post-process TMS datasets. Some web mapping ser‐
       vices use completely different datasets at different zoom levels. For example, they may use NASA BlueMar‐
       ble imagery until they reach level 4, then abruptly switch to LANDSAT data. This is fine  for  2D  slippy
       map  visualization but can be visually distracting when viewed in 3D because neighboring tiles at differ‐
       ent LODs look completely different.

       osgearth_backfill lets you generate a TMS dataset like you normally would (using osgearth_package(1),  or
       another tool) and then "backfill" lower levels of detail from a specified higher level of detail. For ex‐
       ample, you can specify a max level of 10 and LODs 0-9 will be regenerated based on the data found in lev‐
       el 10.

OPTIONS

       tms.xml
              Path to the tms.xml file

       --bounds xmin ymin xmax ymax
              bounds to backfill (in map coordinates; default=entire map)

       --min-level level
              The minimum level to stop backfilling to. (default=0)

       --max-level level
              The level to start backfilling from. (default=inf)

       --db-options options
              db options string to pass to the image writer in quotes (e.g., "JPEG_QUALITY 60")

                                                10 February 2020                            osgearth_backfill(1)