Oh! I did in fact have one, though it's the Zscore-mapper (I had previously thought I checked 'mapper' in res[1].a, but perhaps it came out incorrectly). Though I realize Z-score mapper probably doesn't have a reverse mapper, and perhaps that's the issue? Is there a workaround you may be aware of?
Thanks! On Mon, Nov 4, 2013 at 10:48 AM, Yaroslav Halchenko <[email protected]>wrote: > > On Mon, 04 Nov 2013, Taku Ito wrote: > > > Are all datasets supposed to have mappers? My data set was loaded > > directly from a NIFTI file, using mvpa2.datasets.mri.fmri_dataset, and > > when I loaded it there was no mapper attached, > > it should be there under .a.mapper ... see e.g. > http://www.pymvpa.org/tutorial_datasets.html#loading-fmri-data > for more information > > > though I attributed it > > target values and chunks. In other words, my original data set also > does > > not have any mappers. Should I be manually attributing mappers to my > data > > set (e.g., the searchlight call or the z-scoring call) and attach all > > those mappers as a Chain? > > let's first figure out if you indeed didn't have any ;-) > > -- > Yaroslav O. Halchenko, Ph.D. > http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org > Senior Research Associate, Psychological and Brain Sciences Dept. > Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755 > Phone: +1 (603) 646-9834 Fax: +1 (603) 646-1419 > WWW: http://www.linkedin.com/in/yarik > > _______________________________________________ > Pkg-ExpPsy-PyMVPA mailing list > [email protected] > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-exppsy-pymvpa > -- Takuya Ito Cognitive Control & Psychopathology Laboratory Washington University in St. Louis Cole Neuroscience Laboratory (http://www.mwcole.net/) Center for Molecular and Behavioral Neuroscience (CMBN) Rutgers-Newark University
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