Thank you for the answer Andrea. I have been doing that previously. It only just occurred to me now, if there are any differences in not doing it differently.
Kind regards, Helmi On Thursday, July 28, 2016 at 4:11:58 PM UTC+8, alcardini wrote: > > Hi Helmi, > > other may have different views, but I would work on, say, the left wing > and the right one mirrored. Although those landmarks are likely to be very > precise, your 'eyes' might see left and right slightly differently, if one > is not mirrored, and you may introduce a small bias. This is of course > testable but I would not waste the time and simply mirror the images using > a batch command (available for instance in IRFANVIEW, which is free). > > Good luck. > > Cheers > > > Andrea > > PS > > For the GPA, the mirroring won't matter if the software (MorphoJ and > Morphologika, for instance) can do it, but I would still worry about the > possible bias. > On 28/07/16 09:59, Helmi Hadi wrote: > > Dear morphometricians, > > I have an odd question. For a translucent matching symmetry object like > fly wings, the venation can be seen on both sides of the object. Should I > flip one side of the wing (left or right side) and landmark all wings in > one configuration or should I retain a sort of mirror image when > landmarking the object. Does it matter or will it affect analysis later on > say if I am classifying it based on side (if I add a left/right side > classifier)? > > Thank you. > > Helmi Hadi, > School of Health Sciences, > Universiti Sains Malaysia, > Kelantan, Malaysia > > > -- > MORPHMET may be accessed via its webpage at http://www.morphometrics.org > --- > You received this message because you are subscribed to the Google Groups > "MORPHMET" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to morphmet+u...@morphometrics.org <javascript:>. > > > -- > > Dr. Andrea Cardini > Researcher, Dipartimento di Scienze Chimiche e Geologiche, Università di > Modena e Reggio Emilia, Via Campi, 103 - 41125 Modena - Italy > tel. 0039 059 2058472 > > Adjunct Associate Professor, School of Anatomy, Physiology and Human Biology, > The University of Western Australia, 35 Stirling Highway, Crawley WA 6009, > Australia > > E-mail address: alca...@gmail.com <javascript:>, andrea....@unimore.it > <javascript:> > WEBPAGE: https://sites.google.com/site/alcardini/home/main > > > FREE Yellow BOOK on Geometric Morphometrics: > http://www.italian-journal-of-mammalogy.it/public/journals/3/issue_241_complete_100.pdf > > -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org.
