Hi Heidi, how exactly do you want to draw a conclusion? The slopes for the different variables may be very different because the variables have a different scale. tksurfer scatter plot is made to look at a cortical variable vs a continuous variable. If you want to look at a scatter plot of your continuous variables, why not just do it in matlab or excel? doug
On 07/16/2012 04:47 AM, Jacobs H (NP) wrote: > Dear FreeSurfers, > > I hope you can help me out with a problem in coding my fsgd file. > I want to examine the spatial difference between two cognitive measures on > cortical thickness in one group. > Furthermore, I will correct for age (centered covariate). > So, I have 4 variables: group (class), 2 cognitive scores (continuous) and > age (continuous). > How can I compare two continuous variables? > I have tried to list them as two variables in the fsgd (so not class): > e.g: > Input101 group 2.3 1.9 -0.5 (number of subject / group / score 1/ score 2/ > age) > Then I ran the dods model with the contrast 0 -1 1 0, which ended up with a > surface sig file. > However, when I look at the scatterplot in tksurfer, I cannot see the two > cognitive variables at the same time. > Is there a better way to do this? > > Thanks a zillion times :) > > Best wishes > > Heidi > > > > ================================================ > Dr. Heidi Jacobs > Postdoc researcher > Faculty of Health, Medicine and Life Sciences > School for Mental Health and Neurosciences > Division Cognitive Neuropsychiatry and Clinical Neurosciences > Alzheimer Center Limburg > h.jac...@maastrichtuniversity.nl > www.maastrichtuniversity.nl > www.heidijacobs.nl > > Dr. Tanslaan 12, 6229 ET Maastricht > P.O. Box 616, 6200 MD Maastricht, The Netherlands > T +31 43 38 84 090 F +31 43 38 84 092 > ================================================ > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
