CIFTI files store data on a combination of surface and volume representations, so first you need to know (roughly) what structure the thing you are looking for is on. Currently, the options are left cortex, right cortex, and everything else is represented as voxels.
If all you have to start with is a coordinate, you can get the closest vertex to a coordinate with wb_command -surface-closest-vertex (you need to use a 32k fs_LR MNI space surface here for the 91k grayordinate space), and you can use the volume space in the cifti XML to translate between coordinates and voxel indices. Then you need to find the matching vertex or voxel that is represented in the CIFTI file - the command wb_command -cifti-export-dense-mapping should help here. If there is no matching vertex or voxel that is represented in the cifti file, then your coordinate has probably landed in CSF or white matter somewhere. Tim On Wed, Sep 23, 2015 at 3:29 AM, sky9...@126.com <sky9...@126.com> wrote: > hi, > > When I get a MNI coordinate, how can I get it's time series in *.dtseries > file. > > ------------------------------ > sky9...@126.com > > _______________________________________________ > HCP-Users mailing list > 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
