Re: [Freesurfer] --sim: Command not found

2015-05-29 Thread Mihaela Stefan
Thanks! I'll try that. Mihaela On Fri, May 29, 2015 at 12:20 PM, Douglas Greve gr...@nmr.mgh.harvard.edu wrote: The clusterwise p-value (--cwp) will correspond to a certain cluster size, so you can play with that to get clusters of a certain size. In the vbm example you give below, each of

Re: [Freesurfer] --sim: Command not found

2015-05-29 Thread Douglas Greve
The clusterwise p-value (--cwp) will correspond to a certain cluster size, so you can play with that to get clusters of a certain size. In the vbm example you give below, each of those clusters will have a p-value, they just choose not to report them. doug On 5/29/15 11:50 AM, Mihaela Stefan

Re: [Freesurfer] --sim: Command not found

2015-05-29 Thread Mihaela Stefan
Hi Doug, The simulation went smoothly, however, as I suspected, no clusters were detected. I wonder if you have any thoughts about my question in the previous email, regarding the uncorrected p values. Thanks! Mihaela On Thu, May 28, 2015 at 11:09 AM, Mihaela Stefan mikaelastep...@gmail.com

Re: [Freesurfer] --sim: Command not found

2015-05-28 Thread Mihaela Stefan
Thanks, Doug, the command seems to work. I guess it will take a while to finish running. On a different note, I have a large data set that doesn't seem to generate corrected results. What's interesting is that the uncorrected results are consistent with our previous findings and those from the

Re: [Freesurfer] --sim: Command not found

2015-05-27 Thread Douglas N Greve
Right, strictly speaking, permutationis for orthogonal design matrices only, which is not the case when you have a covariate. There was a recent paper by Anderson Winkler Permutation Inference for the General Linear Model in NI in which he goes over various permutation methods for

Re: [Freesurfer] --sim: Command not found

2015-05-27 Thread Mihaela Stefan
Thanks! It seems that there was a white space. I ran the permutation command but now I got another error: ERROR: design matrix is not orthogonal, cannot be used with permutation. If this something you really want to do, run with --perm-force Wed May 27 16:27:50 EDT 2015 ERROR: cannot find any csd