I'm making some 3D plots with contour3d from misc3d and wireframe from lattice. 
 I want to view them from below; i.e. the negative z-axis.  I can't figure out 
how to do so.  I would like my point of view looking up from below, with the z, 
y, and x axes positive going away.  Can anyone tell me the correct settings for 
screen to achieve this?  Here is what I've found so far:

 screen=list(z=-40, x=-60, y=0), # looking down and away in negative x direction
 screen=list(z=40, x=60, y=0),  # domain turned upside down, looking up and 
away in neg. x direction
 screen=list(z=-40, x=60, y=0),  # domain turned upside down, looking up and 
away in pos. x direction
 screen=list(z=40, x=-60, y=0),     # looking down and away in positive x 
direction


Scott Waichler
Pacific Northwest National Laboratory
P.O. Box 999, Richland, WA  99352
scott.waich...@pnl.gov
509-372-4423, 509-341-4051 (cell)

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