----- Forwarded message from
[email protected] -----
Date: Sat, 12 Apr 2014
02:48:13 -0700
From: [email protected]
Reply-To: [email protected]
Subject: Landmark
Placement in Geomorph
To: [email protected]
----- Forwarded message from "Greiner, Thomas"
<[email protected]> -----
Date: Mon, 31 Mar 2014 14:21:40
-0400
From: "Greiner, Thomas" <[email protected]>
Reply-To: "Greiner, Thomas" <[email protected]>
Subject:
Landmark Placement in Geomorph
To: Morphmet
<[email protected]>
I am trying to use the R geomorph package to place
landmarks on a 3D object.
I read the ply image in fine and the object displays.
I use the mouse to draw a square around the location where I want to place a landmark, or "vertex" as it is described in the instructions. A landmark get placed, but it jumps through the object. It seems that the "vertex point" assumes a position that is on the surface of the object directly opposite to where I would want it positioned. So, I am having trouble placing these points at useful landmark positions. I am similarly unclear how drawing a square would allow placement of the landmark with any precision.
Perhaps
the problem is that I do not fully understand what is meant by "vertex." I have
been taking it to be a synonym for landmark. Operationally that appears to be
incorrect, but I do not know how to proceed.I read the ply image in fine and the object displays.
I use the mouse to draw a square around the location where I want to place a landmark, or "vertex" as it is described in the instructions. A landmark get placed, but it jumps through the object. It seems that the "vertex point" assumes a position that is on the surface of the object directly opposite to where I would want it positioned. So, I am having trouble placing these points at useful landmark positions. I am similarly unclear how drawing a square would allow placement of the landmark with any precision.
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