Fixed limits in errorbar to display properly.
Changed limits to support NxN arrays, fixed mistake in z upper limits, removed forgotten comments, moved masking of x,y,z to same spot.
Changed y limit caret type to look more appropriate, however noticed problem of the 3d projection of the 2d carets on the graph. On rotating the graph the arrows/carets appear to be out of line, and they flip when the graph is rotated in the direction of the arrow. Will have to investigate further for a solution.