Extracting images in RasterLite2

[Mark Johnson]

For those interested in the upcoming
- spatialite 4.2 and RasterLite2

Here are some command samples for retrieving images
- as a tile
- from a geometry
- from a random area
-- based on what the screen would look like in geopaparazzi
-- at zoom 18 and 14

https://github.com/geopaparazzi/Spatialite-Tasks-with-Sql-Scripts/wiki/RL2_GetMapImage

Mark