[yt-users] Volume cutout

Hi everyone, I'm working with data on a cubic domain, and I'd like to be able to visualize the whole 3D domain with one octant cut out. What I'm looking for is similar to VisIt's clipping functionality. I don't really need a real volume render with opacity--rather, I'd like pseudocolor planes showing the boundaries of the domain, but cut out in one octant so that the interior is visible. The visible interior portion would then be defined by a set of orthogonal pseudocolor planes marking the interior boundaries of the desired quadrant. Is there a straightforward way to achieve this using yt? I'd appreciate any suggestions. Thanks, Dan