Hi Graham have you tried freeview? We stopped development on the tktools some time ago.
cheers Bruce On Fri, 21 Nov 2014, Graham Wideman wrote: > Hi all, > > I'm having some issues (some possibly mine, some possibly tksurfer's) getting > tksurfer (5.3c6) to display curvature the way I think it should be able to. > I am using the bert sample data. > > The Curvature display > --------------------- > If I use the Show Curvature button in the UI control panel, I get the > familiar gyrus=green; sulcus=red pattern applied to the displayed brain. > > The Configure Curvature Display is a bit of a shambles, and I think should be > fixed. First, it is virtually impossible to set midpoint using the slider, > because the values it pushes to the adjacent textbox are way too coarse. > Typing values into the midpoint textbox works, in that it affects the balance > of red and green in the display. However the textbox does not affect the > position of the slider, suggesting that it actually does not work. > > That said, there's no actual adjustment of the threshold size. Indeed, it's > not clear that there actually IS a threshold -- perhaps there isn't. Maybe > "threshold midpoint" just sets the midpoint of the color range? > > And then there's a a textbox labeled "threshold slope". I'm pretty sure > that's nonsensical phrase. What this box appears to do is set the ratio of > color to curvature value. Ie: "Color intensity". > > Bottom line -- this dialog only partially fits the purpose at hand, and is so > confusingly wording that ones attempts to use it are pretty much random. It > may even be that some UI elements or functionality that was once there has > gone missing accidentally? > > Finally, I wanted a colorbar for the curvature display, and so far as I can > tell there isn't one. I can turn on a colorbar, but it's the one for overlays. > > Using a Curvature variable as an overlay > ---------------------------------------- > I next tried to read in the k1.crv variable as an overlay. This sort of > works, but gives a very mottled display (except using "heat map" color > scheme), I think because even in definite sulcus and gyrus regions, the > curvature values straddle the border of the grey range of color, and I'm not > sure how to adjust it sensibly. > > -- I couldn't figure out how to set the overall color range, that is to say > the extremes of the colorbar. These seem stubbornly stuck at 5.0 and -5.0. In > particular, the Theshhold Max setting doesn't seem to affect the extremes of > the color range. > > -- I couldn't figure out how to eliminate the large grey range in the middle > of the color range. I noted that the Threshhold Min setting can be used to > make the grey range larger, but setting Min below 1.5 (for example, zero) > does not eliminate the grey between 0 and +/-1.5. > > ------------------------ > > Anybody have any helpful clues on these items! > > Thanks! > > -- Graham > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > _______________________________________________ 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.
