Overlays rasters of different data resolution by filling in gaps in the highest resolution raster with data available in lowest resolution one. If only high or low resolution data are available, it will use it without attempting to overlay.
overlayStacks( highQualityStack, lowQualityStack, outputFilenameSuffix = "overlay", destinationPath )
high quality list/stack of rasters (will be used preferentially)
low quality list/stack of rasters
(will be used to fill
file suffix to save raster if there was overlaying.
directory for saved rasters