Read raster data at a specified resolution on-demand via 'GDAL' (the Geospatial Data Abstraction Library < https://gdal.org/>). Augments the 'raster' package by never reading data from a raster source until necessary for generating an in-memory 'raster' object. A 'lazyraster' object may be cropped and converted to 'raster' object, and by default will only read a small amount of data sufficient for an overall summary. The amount of data read can be controlled by specifying the output dimensions.