I have 18 GB of imagery I loaded into a raster catalog. When I convert Raster Catalog to Raster Dataset, the file grows tremendously. It's currently upwards of 200 GB. Why is this?
What version of software are you using? what tool are you using to do the export? What spatial resolution are you writing out, and what are the dimensions of the final raster? Did you specify a NoData value?
dimensions... probably EW, NS in pixels and/or distance and pixel size, probably more questions relating to destination (gdb type etc), compression, pyramids etc etc
Entire state of Rhode Island. 1, 1 cell size (1 ft resolution). The first time i exported it as Esri GRID. I'm now exporting it as JP2 so its the same as it went into the Raster Catalog. I guess I don't understand how it takes 18 gbs and turns it into 200 gb. Is this all due to compression?
Steven, I normally use esri grids myself, but the information on compression might guide you based on your image type etc. A 10 fold increase is a bit of a surprise unless there is other information also being stored.
