I feel like I've addressed this problem before. Whenever I spin and tilt the data,
the top and bottom of the image gets sliced off. I used to think that it was just
what was supposed to happen when I did this, but if I spin first and then tilt,
nothing should get cut off or even warped at all if I'm plotting xy-radius vs. z.
This is the same as the image below and left, with the exception that it's on a grid of density
100. This should mean a factor of 8 increase in data points. However, it doesn't look noticeably
different from the less dense grid. Again, click on the image for a full-size view.
This is the latest image from interpolation onto the cartesian grid. This image has
a grid density of 50. Next to it is the equivalent image from the polar grid. The
interpolation is doing a pretty good job, considering that the point density is low
and that the interpolation method is just nearest-neighbor.