Johannes,
Hopefully, Donna's instructions worked for your immediate purposes.
Depending on your specific purpose, there are other options for showing
the nature and magnitude of the spherical deformations, using the
original sphere and the deformed sphere (but with the same node number
as the original surface family).
Selecting Attributes: Generate Deformation Field brings up a window
that lets you choose a source and target surface, then it generates a
vector field between corresponding nodes of the source and target.
This deformation field file can be loaded into Caret and viewed as a
'sparse' display, showing (for example) the vectors (needles) for one
in 50 nodes.
Another option is to use the Surface: Interpolate Surfaces option to
generate a smooth sequence of intermediate shapes, and to use the File:
Record as MPEG option to make a movie that cycles from the original to
the deformed sphere and back, with whatever display you want on the
surface (e.g., sulcal depth).
Hope this helps.
David
On Apr 4, 2005, at 9:14 AM, Donna Hanlon wrote:
Sorry Johannes,
I realized after I replied that you wanted the borders -- not the
latlon itself. But I think I know how to do this:
Generate your latlon borders on the individual's sphere
Save as mylatlon.border
Apply the deformation map stored in the atlas target directory for
that individual using spherical border file type
Go to your atlas target directory and open the deformed border on your
atlas target spec file
I just tried it and my borders look like the attached jpg.
Donna
On 04/04/2005 09:04 AM, Johannes Klein wrote:
Yes I did, but I'm stuck with displaying them on the surface. I
suppose my
problem is that I don't know how to derive visible borders from that
information. When I use the "Create Lat/Lon Spherical Borders"
Button, the
appropriate borders are created, but it seems the Latitude Longtitude
information is regenerated thus resulting in a regularly spaced grid
again.
I've also tried saving the latlon border projection and deforming
that, but
the results were not as expected and I'm still stuck.
Johannes
-----Ursprüngliche Nachricht-----
Von: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Im Auftrag von Donna
Hanlon
Gesendet: Montag, 4. April 2005 14:59
An: Caret, SureFit, and SuMS software users
Betreff: Re: [caret-users] deforming a Lat-Lon grid
Hi Johannes,
Did you try generating the latlon on the individual's surface (i.e.,
before deformation), and then applying the deformation map to that
latlon file?
Donna
On 04/04/2005 03:46 AM, Johannes Klein wrote:
Hi everyone,
I'd like to show how a particular spherical surface gets deformed
during morphing. I know how to generate fresh latitude-longitude
borders on it, but I can't figure out how to get them
deformed the same
way the surface was. Thanks a lot Johannes
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