Hi folks, I'm doing some simple volume rendering, with the end goal to make a movie looking at the central object from a bunch of different angles (just going around in a circle). When I do the script below, some of the images are rotated 90 degrees from the others -- that is, the correct viewing direction, but just rotated clockwise 90 degrees. Any thoughts why that would be happening? Cheers, Andrew tf=ColorTransferFunction((mi,ma)) tf.add_layers(6,w=0.02) v,c=pf.h.find_max("Density") W = 0.01/pf['pc'] Nvec=512 for i in range(200): dy=4.*math.pi/199. theta = i * dy yval = math.cos(theta) xval = math.sin(theta) L=[xval,yval,0.] vp=pf.h.volume_rendering(L,W,c,Nvec,tf,whole_box=True) vp.ray_cast() write_bitmap(vp.image,"VolTest_%03d.png" % i) ************************************************************* ** Andrew J. Davis andrew.davis@yale.edu ** ** Dept. of Astronomy 203-432-5119 ** ** Yale University www.astro.yale.edu/adavis ** *************************************************************