I need some help in classifying multiple datasets in a single classification. I want to use Worldview 2, 4-band imagery (2 m res on MSS bands) as well as geophysical data (radiometric data at 50m res) as well as topographic data such as aspect slope and elevation (derived from a DEM). I can create classification results for each layer separately; but how do I integrate all the information into a single analysis? Presumably I need to resample all the data to the same resolution (2 m) as a starting point, but what do I do next? And how do I assign a weight each layer in the classification?