Hi Sebastian, sorry for the delay. It looks like you are trying to remove a lot of time points, and that's causing the design matrix to be ill-conditioned. Glad spikedet-sess is working for you.
doug Sebastian Moeller wrote: > Hi Doug, > > sorry for having bothered you before checking closer. Just excluding the > offensive run solved my problem... (now off to figuring out how to detect if > I want to exclude to many timepoints in a run :)) > > best > Sebastian > > > > > > > On Jan 27, 2011, at 11:54 , Sebastian Moeller wrote: > > >> Hi Doug, >> >> I have a number of runs with some bad k-space arcing artifacts that I still >> would like to analyse. Now spikedet-sess makes childs play to turn the >> detected spikes into a timepoint exclusion file. But when I try to use this >> file with fs-fast (from freesurfer v4.5 x86_64) I get errors from >> fast_selxavg3.m (see below). Do you have any idea how I can use tpefs for >> fs-fast analysis again (it worked in 3.0.5). Also will this work in V5 (a >> very compelling reason to upgrade :))? >> >> Thanks in advance >> Sebastian >> >> >> Here is the output when I tried to exclude 87 of 272 timepoints (when >> trying to exclude 11 timepoints I get the same result) >> outanadir = /home/helios/data/moeller/cooked/2011/110105Bert/bold/a1 >> Found 162817/497664 (32.7) voxels in mask >> Creating Design Matrix >> Excluding 87 points >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> Warning: Matrix is close to singular or badly scaled. >> Results may be inaccurate. RCOND = 1.665831e-43. >> >>> In fast_selxavg3 at 212 >>> >> -- >> Sebastian Moeller >> >> telephone: 626-807-5242 / 626-395-6523 / 626-395-6616 >> fax: 626-395-8826 >> German GSM: 0 15 77 - 1 90 31 41 >> mobile: +1-626-325-8598 >> US CDMA: + 1 - 626 - 807 - 5242 >> [email protected] >> >> Division of Biology >> MC 114-96 >> California Institute of Technology >> 1200 East California Boulevard >> CA 91125, Pasadena >> USA >> >> > > > -- Douglas N. 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