-------- Original Message --------
Subject: help with classifiers and assessment of ME greatly appreciated
Date: Tue, 18 Oct 2011 18:57:42 -0400
From: Jordan, Friederike <[email protected]>
To: [email protected] <[email protected]>
Hello everybody,
I am a Master student conducting a morphometric study on New Zealand
common dolphin skulls. In addition to manual measurements taken with
calipers ee have also aquired 98 landmarks from 20 skulls with a
microscribe and I am planning to analyse the shape with MorphoJ.
I have read through the help manual of the software, but I am stuck and
I was hoping that someone could help me. Sorry, for asking really basic
questions, but I have never used the software before and nobody else
here has who I could ask for help.
We have taken repeated measurements from a number of skulls and I would
like to assess the measurement error of each the 98 landmarks for each
repeat and. I have trouble uploading classifiers for the files. The
names of two repeats are ‘KS09-13Dd_test1’ and ‘KS09-13Dd_test2’. I
created a text file with two columns (test: should be the classifier):
ID test
KS09-13Dd_test1 test1
KS09-13Dd_test2 test2
First, I created an identifier from this text fiele and afterwards I
tried to create the classifiers from the same text file. However, when I
upload the file I get an error message saying that the second classifier
could not be matched.
Does anybod yhave an idea what I might be oing wrong?
I read that Procrustes ANOVA can be used to assess measurement error, is
that correct? However, am I correct that it is not possible to assess
the measurement error for each individual landmark in MorphoJ? Does
anybody know a software where the individual assessment is possible?
If it is possible in morphoJ, do the data points for the 2 skulls (the
repeats) have to be combined in a single data set, or should the data
points for each skulls be uploaded as separate data sets?
When selecting the classifiers in the Procrustes ANOVA window could I
just select one classifier for ‘individual’, or do I have to input
something for ‘side’ or ‘error1’ and ‘error2’?
I tried to carry out a Procrustes ANOVA on one repeat (with the error
message of the classifiers) and I got the output below:
Centroid size:
Effect SS MS df F P (param.)
Individual 0,000441 0,000441 1
Shape, Procrustes ANOVA:
Effect SS MS df F P (param.) Pillai tr.
P (param.)
Individual 0,00001974 0,0000000688 287 NaN NaN
I was wondering what NaN stands for? I guess the analysis did not work?
Thank you very much in advance!! My email address is : [email protected]
Thanks a lot!
Fidi
Friederike Jordan
MSc Student
Coastal-Marine Research Group
Institute of Natural Sciences
Massey University
Private Bag 102 904
Auckland 0745
New Zealand
Phone: + ext.41520 Fax: +64 (0) 9 443 9790
Email: [email protected]
Courier address: Massey University, Building 5, Gate 4, Old Albany
Highway, Albany, Auckland
