[caret-users] Translucent fiducial surface?

[Donna Dierker]

Hi Leeland,

I don't think so, but David will correct me if I'm wrong.  (John will 
return from Australia next week; he would know best.)

There is a way under D/C: Surface Miscellaneous to turn the drawing mode 
to Nodes or Hide Surface, but neither of these will give you what you 
want.  You could toggle back and forth the Partial View options, but 
this isn't any better than just toggling Toolbar:L and Toolbar:M to 
switch sides.  Would selecting Window: Window 2 and setting Window 2 to 
medial view, main window to lateral work?

If you actually want to combine/sum the metrics on either side, then I 
would generate the sum directly as a new combined metric overlay.  With 
more knowledge of the surface type and how the respective sides 
relate/align, I could elaborate.

Here is an example of how it might work:  Let's say the surface is a 
sphere.  Metric 1 is good; we like it like it is.  Metric 2 is one we 
want to flip along some axis and sum with metric 2.  We project Metric 2 
to a volume via Attributes: Metric.  We either flip the volume along the 
axis of interest, or we flip the surface and map the volume to the 
flipped surface.  Now we can sum metric 1 and metric 2 to create metric 
3 (sum metric1 + [xyz]-flipped metric 2).

I may be way off track, but at least now you know how to steer my thinking.

Donna

On 06/25/2008 05:30 PM, Leeland Ekstrom wrote:
> Hi,
>
> Is there some way in Caret to alter the opacity of the fiducial surface 
> itself (i.e. when viewing a 3D inflated surface, reduce the opacity of 
> the surface itself to something like 50%, so that metric blobs on both 
> medial and lateral sides of the brain could be seen simultaneously)?  
> The 'opacity' parameter on the 'Overlay/Underlay - Surface' dialog seems 
> to only alter overlays and underlays, and not the base surface itself 
> upon which these different surfaces are visualized.
>
> Thanks for your help,
> Leeland
>
>