Unlike other kinds of cifti files, opening a dconn (even if it is a large file) should not load it into memory, so it should work even on modest computers. Open Location probably will not work on a local file.
Please first check that you have the latest version of workbench (currently 1.2.3, check by going to the menu "Connectome Workbench", "About Workbench..."), then open a terminal window, launch wb_view from it, and repeat the steps that cause a crash, and if it still crashes, paste the crash-related terminal output into an email, so we can figure out what is going on. It sounds like what you want to do is correlate a seed-average timeseries to all vertices, and this is not what the -roi-override option does. The -cifti-average-roi-correlation command is probably what you want. Tim On Tue, Jan 3, 2017 at 4:44 PM, David Van Essen <[email protected]> wrote: > Hello Xavier, > > If you open your dense connectome file using File: Open File, this entails > loading ~30 GB of data into memory, which is slow and can indeed make > wb_view crash. > > Instead, it is generally preferable to use File: Open Location, and then > enter the file’s URL into Custom: URL. Once that is done, clicking on a > vertex or gray matter voxel should show the seed-based dense connectivity > for that grayordinate. There are other options for on-the-fly computing > and viewing the average functional connectivity for a user-selected ROI. > > I hope this helps. > > David > > On Jan 3, 2017, at 1:04 PM, Xavier Guell Paradis <[email protected]> wrote: > > Dear HCP team, > I am trying to calculate resting-state functional connectivity for subject > 100307 using a seed in the right cerebral cortex that I have defined using > a ROI metric file. I have tried the following -cifti-correlation code: > > /Applications/workbench/bin_macosx64/wb_command -cifti-correlation > /Users/xavierguell/Desktop/MRIFILES/HCPDATA/100307REST/ > MNINonLinear/Results/rfMRI_REST1_LR/rfMRI_REST1_LR_Atlas_ > MSMAll_hp2000_clean.dtseries.nii /Users/xavierguell/Desktop/ > MRIFILES/HCPDATA/100307REST/UCTconn1003072BKseed.dconn.nii -roi-override > -right-roi /Users/xavierguell/Desktop/MRIFILES/HCPDATA/HCP_S900_ > GroupAvg_v1/UCTconn1003072BKROI.func.gii > > The output file (UCTconn1003072BKseed.dconn.nii) is generated and I can > open the file in workbench view. However, the file in workbench view does > not show color in any brain area. Also, workbench view crashes very > frequently after loading the UCTconn1003072BKseed.dconn.nii file. > > I would be grateful if you could tell me whether there is something wrong > in the code I wrote. > > Thank you very much, > Xavier. > > Xavier Guell Paradis, M.D. > Visiting Scientist > Massachusetts Institute of Technology > McGovern Institute for Brain Research > Office: 46-4033A > Phone: (617) 324-4355 > Email: [email protected] > > _______________________________________________ > HCP-Users mailing list > [email protected] > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > > > _______________________________________________ > HCP-Users mailing list > [email protected] > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
