[PyMOL] gradual transparency

[Fernandes H. <hum...@ma...>]

Hi everybody

I want to set a gradual transparency in cartoon of an helix. anyone  knowns if
it is possible? I try to do several sub-objects with increase and decrease
transparency but doesn't work appropriately. when I create the object sometimes
is not continuous (the pictures have a gap) and/or the cartoon doesn't have the
exact form of the helix of the protein. Does anyone know if there is a way of do it?

Thanks a lot,

Humberto