You might be giving caret more credit than is due. It does not automatically convert t to p or vice versa. You have to compute the desired t/z, based on the p value you want. For example:
If you want to show a metric thresholded at p=.01, and you are feeding caret t values (df=17), then you'd need to enter 2.8982 in the Caret user threshold setting for Caret to suppress values below that level. Similarly, if you feed it z values, you'd enter 2.5758 (corresponding to p=.01). The user scale adjusts how the palette maxes/mins out. The threshold just makes anything below the threshold transparent, so that any underlay shows through those vertices. > <html><head></head><body><div style="font-family: Verdana;font-size: > 12.0px;"><div> > <div style="font-family: Verdana; font-size: 12px; line-height: > normal;"><span style="font-family: verdana, geneva, sans-serif;">Hello > all, </span></div> > > <div style="font-family: Verdana; font-size: 12px; line-height: > normal;"><span style="font-family: verdana, geneva, sans-serif;"><span > style="line-height: 1.6em;">I've done two metaanalyses (using the > MKDA approach) and mapped the resulting volumes to a</span><span > style="line-height: 1.6em;"> surface in order to obtain the > overlapping clusters (I created the overlap </span><span > style="line-height: 1.6em;">via Surface Menu</span><span > style="line-height: 19px;">->Region of Interest > Operations).</span></span></div> > > <div style="font-family: Verdana; font-size: 12px; line-height: > normal;"><span style="font-family: verdana, geneva, sans-serif;"><span > style="line-height: 19px;">The MKDA-outputs, which I mapped to the surface > are pre-thresholded and contain a more liberal threshold than I want to > have for my data. I know that there is a "Threshold adjustment" > as well as a "Color Mapping" option in the metric settings menu. > But I'm not quite sure about the difference. Anyway, my main problem > is that the MKDA output just provides me with z-values. Is there a > possibility to threshold my metrics with these z-values (instead of > t-values, what I suppose is to be done in metric settings/threshold > adjustments)?</span></span></div> > > <div style="font-family: Verdana; font-size: 12px; line-height: > normal;"><span style="font-family: verdana, geneva, sans-serif;"><span > style="line-height: 19px;">Lots of thanks in advance</span></span></div> > > <div style="font-family: Verdana; font-size: 12px; line-height: > normal;"><span style="font-family: arial, helvetica, sans-serif;"><span > style="line-height: 19px;"><span style="font-family: verdana, geneva, > sans-serif;">Fabian</span></span></span></div> > </div></div></body></html> > _______________________________________________ > caret-users mailing list > [email protected] > http://brainvis.wustl.edu/mailman/listinfo/caret-users > _______________________________________________ caret-users mailing list [email protected] http://brainvis.wustl.edu/mailman/listinfo/caret-users
