-------- Original Message --------
Subject: EVAN toolkit help
Date: Fri, 28 Oct 2011 09:56:04 -0400
From: Heather Garvin <[email protected]>
To: [email protected]
Hi All,
I just downloaded the EVAN toolkit, which looks like it's going to be an
awesome resource. I've gone through all the tutorials/reference manuals,
but it seems like some areas are not completed within them, and I was
wondering if anyone has had experience with using 3D surface sliding
semilandmarks within the program, and would be willing to help me out.
1) First off with Templand - I've managed to make a template, and have
figured out how to project those semilandmarks onto the next specimen.
(I do the whole "Calculate & Warp" button.) I then project the points
onto the new specimen. Then I let the semilandmarks slide. In a number
of cases the semilandmarks actually slide off of the surface. After
letting the semilandmarks slide, should I then project the points back
onto the specimen again? Should I be treated the outline of the specimen
(for simplicity sake think of a triangle), act as a different set of
semilandmarks, so that they slide independent of the other surface
semilandmarks? I'm sorry if these are general questions.
2) Let's say I have completed the process correctly, and have my
semilandmarks & landmarks. I know I can export the points individually
for each specimen. But the manual also seemed to imply that you could
"append" them, creating one large data set with all the individuals
(instead of having to combine all the files at the end by hand). I've
used the "append" button, but can't seem to figure out where I can
export the entire data set.
3) The manual also suggests that by appending the specimens, you can
then go back to the main window and use that data in subsequent
analyses. I'm running into 2 problems here.. I've used the "view" tab to
see what's actually being uploaded into the program, and despite the
fact that I've appended 4 specimens, it only shows 2 (the template and
one other specimen, whichever is currently being viewed in the Templand
window). And if I try to do anything other than just view the landmarks,
the program just crashes on me. I'm thinking if I export the data,
combine it into a single data set, and then just upload the dataset
instead of trying to run stuff straight from Templand, I may be able to
avoid these issues.
Bottom line - if anyone has experience with any of these scenarios - any
guidance would be greatly appreciated! The current tutorials and
reference manuals were great for getting introduced to the program and
simple analyses. I'm sure there is similar documentations in preparation
for more complex scenarios, I'm just not sure that my dissertation has
the privilege of waiting that that patiently.
Thanks in advance!
--Heather
*
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Heather Garvin*
PhD Candidate
Center for Functional Anatomy & Evolution
Johns Hopkins School of Medicine
http://www.hopkinsmedicine.org/fae/HMG.htm
[email protected]
