Nodes don't get deleted from the coord file, but they can be disconnected. These link/neighbor relationships are stored in the topology file. So you can save the cuts as an alternative, cut topology file.
On 10/03/2010 02:33 AM, Tristan Chaplin wrote: > Thanks Donna. It turns out that because Caret doesn't seem to delete > nodes that were in links that I cut (unless maybe I ask it to), I can > actually still relink the polygon data after I've cut and flattened it. > > Thanks, > Tristan > > On Wed, Sep 29, 2010 at 23:14, Donna Dierker <[email protected] > <mailto:[email protected]>> wrote: > > Tristan, > > You've already seen the file formats page below, so I won't repeat > that > link (embedded below). > > But here is some more info: > > * Cell data (aka foci) are like 3D coordinates relative to some > surface > (typically a "fiducial" surface, such as midthickness, white > matter, or > pial). They can be *projected* onto tiles, and saved as cellproj or > fociproj. Then they are tied to a mesh and can be rendered on any > surface configuration (flat, inflated, etc.). > > * Metric and surface_shape data are node:scalar pairs -- could be > curvature, sulcal depth, fMRI stats, whatever. But these are tied to > nodes -- not tiles/triangles. > > * If you use caret_command to import the VTK surface, you will have > saved coord/topo or gifti files. You can also save this in the GUI > using the File: Save Data File. After importing the VTK surface, use > either: > > File: Save Data File: Topo File > File: Save Data File: Coord File > > ... or ... > > File: Save Data File: Gifti file (or gifti surface -- no time to > check) > > Donna > > On 09/28/2010 05:10 PM, Tristan Chaplin wrote: > > Thanks I'll check that out. > > > > I can write a program to convert between two data formats if > Caret has > > some appropriate file format. Something where you can assign > data to > > the mesh polygons, so you can then say colour the surface in caret > > with that data, as you would if it was mean curvature etc. I was > > hoping it was the cell file? > > > > FYI The problem is I need to cut and then flatten some surface > models > > that have data associated with the polygons. The thing is if I > import > > to Caret, that polygon data is not kept anywhere. Then when I > cut the > > surface and flatten, there are less polygons than there used to > be, so > > when I save the it back as a VTK file I can't even cross > reference it > > to the original VTK file to "look up" the polygon data. Therefore I > > need to hang on to this data whilst cutting and flattening. > > > > Thanks, > > Tristan > > > > On Tue, Sep 28, 2010 at 23:12, Donna Dierker > <[email protected] <mailto:[email protected]> > > <mailto:[email protected] > <mailto:[email protected]>>> wrote: > > > > It sounds like you have two kinds of VTK data: The > surfaces, and > > the cell > > data. You can certainly import VTK surfaces into Caret, using > > either the > > File: Open Data File option, or caret_command (command line > utility). > > > > I don't know about VTK cell data. > > > > Our whole lab is in all-day meetings today and tomorrow, so it > > might be > > Thursday before we can check on this. > > > > Enter "caret_command -help-full > /tmp/caret_command.txt" at a > > terminal > > window and use a text editor to read /tmp/caret_command.txt and > > search for > > "file-convert". (If you're on Windows, you'll need to > adjust this > > command > > accordingly.) > > > > > Hi, > > > > > > I'm pretty new to Caret, so far I've just been using it for > > reconstruction > > > from histological slices and flattening. > > > > > > I have some pre-existing VTK surface models in which the > > polygons have > > > some > > > data associated with them, e.g. number tracer labelled cells, > > visuotopic > > > information etc. In the VTK text file format, it's called > > CELL_DATA. > > > > > > When I load these surfaces into Caret, it seems this data > is not > > preserved > > > anywhere. However Caret does seem to support this VTK > feature when > > > exporting - if I colour the surface with a overlay of the mean > > curvature > > > and > > > save a VTK file, I see that it writes out the colouring as > > CELL_DATA in > > > the > > > VTK file. > > > > > > My question is, how do I import this polygon data into Caret > > surfaces? > > > I'm > > > thinking I need to import it as a different Caret file, > such as > > a Cell > > > file. > > > Is that correct? Should I generate a separate file using the > > information > > > at > > > > > > > http://brainvis.wustl.edu/CaretHelpAccount/caret5_help/file_formats/file_formats.html > > > ? > > > > > > Thanks, > > > Tristan > > > _______________________________________________ > > > caret-users mailing list > > > [email protected] > <mailto:[email protected]> > > <mailto:[email protected] > <mailto:[email protected]>> > > > http://brainvis.wustl.edu/mailman/listinfo/caret-users > > > > > > > _______________________________________________ > > caret-users mailing list > > [email protected] > <mailto:[email protected]> > <mailto:[email protected] > <mailto:[email protected]>> > > http://brainvis.wustl.edu/mailman/listinfo/caret-users > > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > caret-users mailing list > > [email protected] > <mailto:[email protected]> > > http://brainvis.wustl.edu/mailman/listinfo/caret-users > > > > _______________________________________________ > caret-users mailing list > [email protected] <mailto:[email protected]> > http://brainvis.wustl.edu/mailman/listinfo/caret-users > > > ------------------------------------------------------------------------ > > _______________________________________________ > caret-users mailing list > [email protected] > http://brainvis.wustl.edu/mailman/listinfo/caret-users > _______________________________________________ caret-users mailing list [email protected] http://brainvis.wustl.edu/mailman/listinfo/caret-users
