Dear PyMVPA Experts: In trying to do an RSA analysis using PyMVPA, I have to say your tools are really great. One issue I’ve run into though is that I can’t figure out from your documentation how to output both correlation coefficients and p-values into a NIfTI file to view the output.
Here’s what I’ve done so far: Set up a comparison matrix for eventually testing against each searchlight: tdm = rsa.pdist(ds.sa.orth, 'correlation’) Set up the target similarity comparison: dsm = rsa.PDistTargetSimilarity(tdm, comparison_metric='spearman', corrcoef_only=True) Set up the searchlight: sl = sphere_searchlight(dsm, radius=3, enable_ca='ca.pvalues’) Run it: slres = sl(ds) And finally output the results in NIfTI format: map2nifti(slres, imghdr=ds.a.imghdr).to_filename('meansubj.rsa_orth_sl.nii.gz’) From your documentation, it seems like there’s a way to output not only correlation coefficients for each voxel, but also p-values. I just can’t figure out how to set it up properly, even after searching the mailing list. I’d appreciate any help you could give. Best, Will --- William W. Graves, Ph.D. Assistant Professor, Department of Psychology Rutgers, The State University of New Jersey Smith Hall, Room 337 101 Warren Street, Newark, NJ 07102 Voice: 973-353-3947 Fax: 973-353-1171 http://lbbil.rutgers.edu _______________________________________________ Pkg-ExpPsy-PyMVPA mailing list Pkg-ExpPsy-PyMVPA@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-exppsy-pymvpa