I have tried reading up on WMS on wiki and other sources but haven't managed to get my head around a couple of points.
1) Using WMS is it possible to get a local copy of the raster data (say a tiff image tile). The reason, I ask is, I need to use his raster data in a secondary process that needs a local copy of the file.
2) I am primarily interested in allowing users the option of downloading orthoimagery and elevation from the USGS repository. I've tried using the Seamless viewer but I am thinking more along the lines of user specifying a coordinate (or four corner coords) and getting the orthoimage and elevation data corresponding to that. I thought WMS (Geoserver being my first option) is the way to go for this, but not certain. So wanted to get your advice.
Thanks in advance.