The surface files are in GIFTI format and documentation for the GIFTI format is available at https://www.nitrc.org/projects/gifti. GIFTI files support several formats including ASCII (text) that can be viewed in a text editor. A GIFTI file is converted to ASCII format using Connectome Workbench’s “wb_command -gifti-convert”. There is also support for GIFTI in Matlab: http://www.artefact.tk/software/matlab/gifti/
The GIFTI Surface File contains two sections: (1) The XYZ coordinates for each vertex, and (2) Vertex indices that form the triangles (three consecutive vertex indices form one triangle). There is no explicit neighbor information but it can be derived from triangle specifications. John Harwell On May 8, 2017, at 1:56 AM, luqi.cheng....@gmail.com<mailto:luqi.cheng....@gmail.com> wrote: Dear HCP Experts, I known that a surface(e.g. .white.surf.gii) is formed by a series of vertices. A triangle is formed by three vertices and three sides. But I have no idea how to get the neigbours, like vertices and sides, of a vertex from a surface file. And how the three vertices form the triangles? Thanks, Luqi _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org<mailto:HCP-Users@humanconnectome.org> http://lists.humanconnectome.org/mailman/listinfo/hcp-users _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org http://lists.humanconnectome.org/mailman/listinfo/hcp-users
