I'm using the Spectral Hourglass Wizard form mineral identification and having selected a small group of pixels in the n-d visualizer to form an endmember class. Then selecting 'Retrieve Endmembers' forms a single class from the group of pixels. Does the Wizard create a mean spectral plot of the pixels forming the endmember class, which is then used in combination with the Spectral Analyst to suggest what the mineral may be?